Prof. Onwujekwe Obinna .

Department: Pharmacology And Therapeutics
Faculty: Medical Sciences
Designation :
Email: Obinna.Onwujekwe@unn.edu.ng
Phone: +2348037007771


Publications (Articles and Journals):

PUBLICATIONS IN JOURNALS:

1. Onwujekwe O, Mangham-Jefferies L, Cundill B, Alexander N, Langham J, Ibe O, Uzochukwu B and Wiseman V (2015). Effectiveness of provider and community interventions to improve treatment of uncomplicated malaria in Nigeria: a cluster randomized controlled trial. Plos One. PLoS ONE 10(8): e0133832. doi:10.1371/journal.pone.0133832

2. Kaur H, Allan L, Mamadu I, Hall Z, Ibe O, Long J, El Sherbiny M, van Wyk A, Yeung S, Clarke S, Swamidoss I, Green MD, Dwivedi P, Culzoni M, Schellenberg D, Fernandez F and Onwujekwe O (2015). Quality of Artemisinin-Based Combination Formulations for Malaria Treatment: Prevalence and risk factors for poor quality medicines in public facilities and private sector drug outlets in Enugu, Nigeria. Plos One,10(5): e0125577. doi:10.1371/journal.pone.0125577

3. Onwujekwe O, Chikezie I, Mbachu C, Chiegil R, Torpey K and Uzochukwu B (2015). Investigating client perception and attitude to decentralization of HIV/AIDS treatment services to primary health centers in three Nigerian states. Health Expectations DOI: 10.1111/hex.12403

4. Uzochukwu BSC, Ughasoro MD, Etiaba E, Okwuosa C, Envuladu E, Onwujekwe OE. (2015). Health care financing in Nigeria: Implications for achieving universal health coverage. Nigerian Journal of Clinical Practice. 18(4):437-44. doi: 10.4103/1119-3077.154196.

5. Etiaba E, Uguru N, Ebenso B, Russo G, Ezumah N, Uzochukwu B and Onwujekwe O (2015) Development of oral health policy in Nigeria:  an analysis of the role of context, actors and policy process. BMC Oral Health 15:56. DOI: 10.1186/s12903-015-0040-8

URL: http://www.biomedcentral.com/1472-6831/15/56

6. Uzochukwu BSC, Okwuosa C, Ezeoke O, Onwujekwe O. (2015). Free maternal and child health services in Enugu State, South East Nigeria: Experiences of the community members and Health care providers. International Journal of Medical and Health Sciences Research., 2(9): 158-170 

7. Uguru NP, Mbachu C, Ibe OP, Uguru CC, Odukoya O, Okwuosa C, Onwujekwe O (2015) Investigating male tobacco use and expenditure patterns across socio-economic groups in Nigeria. PLoS ONE 10(4):e0122021. doi:10.1371/journal.pone.0122021

8. Etiaba E, Onwujekwe O, Uzochukwu B and Adjagba A. (2015). Investigating payment coping mechanisms used for the treatment of uncomplicated malaria to different socio-economic groups in Nigeria. African Health Sciences 15(1):42-48. DOI: 10.4314/ahs.v15i1.6

9. Ibe O, Mangham-Jefferies L, Cundill B, Wiseman V, Uzochukwu B and Onwujekwe O (2015) Quality of care for the treatment for uncomplicated malaria in South-East Nigeria: how important is socioeconomic status? International Journal for Equity in Health. 14:19  doi:10.1186/s12939-015-0150-6

10. Etiaba E, Onwujekwe O, Uzochukwu B, Uguru N, Okoronkwo I and Adjagba A (2015). What co-morbidities do people with malaria have and what are their patterns of health seeking in Nigeria? Nigerian Journal of Clinical Practice. 18(1), 22-26.

11. Ughasoro MD, Udem ND, Ibeneme CA, Uzochukwu BSC and Onwujekwe OE (2015). Management of childhood pain and healthcare providers’ willingness to use topical anaesthetic cream for minor procedural pain in Nigeria. Nigerian Journal of Paediatrics. 42 (1): 28-33.

12. Onwujekwe OE, Etiaba EI, Uguru NP, Uzochukwu BSC and Adjagba A (2014). Towards making efficient use of household resources for appropriate prevention of malaria: investigating households' ownership, use and expenditures on ITNs and other preventive tools in Southeast Nigeria. BMC Public Health. 5;14(1):315

13. Uzochukwu BSC, Onwujekwe OE and Ezumah N (2014).The District Health System in Enugu State, Nigeria: An Analysis of Policy Development and Implementation. African Journal of Health Economics, 3(2):

14. Ogah OS, Stewart S, Onwujekwe OE, Falase AO, Adebayo SO, Olunuga T, Sliwa K (2014). Economic Burden of Heart Failure: Investigating Outpatient and Inpatient Costs in Abeokuta, Southwest Nigeria. PLoS One. 2014 Nov 21;9(11):e113032. doi: 10.1371/journal.pone.0113032. 

15. Ughasoro MD, Onwujekwe OE and Ojinnaka NC (2014). The Economic Cost of Treatment of Childhood Epilepsy in Enugu, Southeast, Nigeria. International Journal of Technology Assessment in Health Care 30(4):1-6

16. Okoli CI, Ezenduka CC, Uzochukwu BSC, Okoronkwo IL and Onwujekwe OE (2014). Achieving value for money in healthcare: principles, methods and empirical applications. African Journal of Health Economics 3(1):25-38

17. Mangham-Jefferies L, Hanson K, Mbacham W, Onwujekwe O and Wiseman V (2014). Mind the Gap: knowledge and practice of providers treating uncomplicated malaria at public and mission health facilities, pharmacies and drug stores in Cameroon and Nigeria. Health Policy and Planning. doi: 10.1093/heapol/czu118

18. Ujunwa FA, Onwujekwe O, Chinawa JM (2014). Health services utilization and costs of the insured and uninsured under the formal sector social health insurance scheme in Enugu metropolis South East Nigeria. Nigerian Journal of Clinical Practice. 17(3):331-5. 

19. Ichoku HE, Fonta W, Onwujekwe O and Kirigia J (2014). Modelling the Technical Efficiency of Hospitals in South-Eastern Nigeria Using Stochastic Frontier Analysis. African Journal of Health Economics.3(1): 63-83

20. Uzochukwu BSC, Sibeudu FT, Ughasoro DM, Okwuosa C and Onwujekwe OE. (2014). How do Primary Health Care Workers Perceive and Practice Post Exposure Prophylaxis for HIV in Enugu State? Journal of AIDS & Clinical Research. 5:12 http://dx.doi.org/10.4172/2155-6113.1000381

21. Onwujekwe O, Ogbonna C, Enemuoh C and Uzochukwu B (2014). Are people really using modern contraceptives and how much do they pay for them?  African Journal of Health Economics. 2(1): 1-11.

22. Ughasoro M, Udem N, Ndubuisi C, Korie F, Uzochukwu BSC and Onwujekwe O (2014). Caregivers willingness to pay for a topical anaesthetic cream for minor paediatric medical procedures. Nigerian Journal of Clinical Practice. 17(4):506 -510.

23. Onwujekwe O, Hanson K, Ichoku H and Uzochukwu B (2014). Financing incidence analysis of household out-of-pocket spending for healthcare in Nigeria.  International Journal of Health Planning and Management. 29: e174–e185. doi: 10.1002/hpm.2166

24. Uzochukwu BSC, Onwujekwe OE, Okwuosa C and Ibe OP (2014). Patent Medicine Dealers and Irrational Use of Medicines in Children:The Economic Cost and Implications for Reducing Childhood Mortality in Southeast Nigeria. Plos One 9(3): e91667. doi:10.1371/journal.pone.0091667

25. Mangham-Jefferies L, Hanson K, Mbacham W, Onwujekwe O, Wiseman V (2014).  What determines providers’ stated preference for the treatment of uncomplicated malaria? Social Science and Medicine, 104:98-106.

26. Okoronkwo IL, Onwujekwe OE and Ani FO (2014). The long walk to universal health coverage: patterns of inequities in the use of primary healthcare services in Enugu, southeast Nigeria. BMC Health Services Research, 14:132. DOI: 10.1186/1472-6963-14-132.

27. Mangham-Jefferies L, Wiseman V, Achonduh OA, Drake T, Cundill B, Onwujekwe O, Mbacham W (2014). Economic evaluation of a cluster-randomized trial of interventions to improve health workers’ practice in diagnosing and treating uncomplicated malaria in Cameroon. Value in Health; 17(8):783-91. doi: 10.1016/j.jval.2014.07.010.

28. Uzochukwu BSC, Ajuba MO, Okwuosa CC and Onwujekwe OE (2014). How do different socio-economic groups cope with payments and household functions when affected by tropical endemic diseases in Nigeria? African Journal of Epidemiology, 2(1): 7-15.

29. Obikeze E, Onwujekwe O, Uzochukwu B, Chukwuogo O, Uchegbu E,  Soludo E and Uguru N. (2014) Benefit incidence of National Health Insurance Scheme in Enugu state, Southeast Nigeria.  African Journal of Health Economics. 2(1): 13-29.

30. Umeano-Enemuoh JC, Onwujekwe OE, Uzochukwu BSC and Ezeoke OP (2014). Patients’ Satisfaction and Quality of Care in a Tertiary Institution in Southeast Nigeria. International Research Journal of Basic and Clinical Studies. 2(2) 14-19 

31. Onwujekwe O, Uguru N, Etiaba E, Chikezie I, Uzochukwu B, et al. (2013) The Economic Burden of Malaria on Households and the Health System in Enugu State Southeast Nigeria. PLoS ONE 8(11): e78362. doi:10.1371/journal.pone.0078362

32. Onwujekwe OC, Onwujekwe  O, Soremekun R (2013). Chemotherapy and Chemoprophylaxis of Malaria in Pregnancy in Private and Public Facilities: Perceptions and Use by Pregnant Women in Enugu State, Nigeria. Gender & Behaviour, 11(2): 5688-5697. 

33. Onoka C, Onwujekwe O, Uzochukwu B and Ezumah N (2013). Promoting universal financial protection: constraints and enabling factors to scaling-up coverage with social health insurance in Nigeria. Health Research Policy and Systems. 13;11(1):20

34. Onwujekwe O,  Ogbonna C, Ibe O, Uzochukwu B (2013). Willingness to pay and benefit-cost analysis of modern contraceptives in Nigeria: an equity analysis. International Journal of Obstetrics and Gynaecology. 122(2): 94 – 98.

35. Aliyu MH, Blevins M, Wester CW; Audet C, Shepherd BE, Hassan A, Onwujekwe O, Gebi UI, 

Kalish M, Lindegren ML, Vermund SH (2013). Optimizing PMTCT Service Delivery in Rural Northcentral Nigeria: Protocol and Design for a Cluster Randomized Study. Contemporary Clinical Trials;36(1):187-97. doi: 10.1016/j.cct.2013.06.013

36. Onwujekwe OE, Enemuoh JC, Ogbonna C, Mbachu C, Uzochukwu BSC, Lawson A and Ndyanabangi B (2013). Are modern contraceptives acceptable to people and where do they source them from across Nigeria? BMC International Health and Human Rights, 13:7.

37. Uzochukwu BSC, Chukwuogo O, Onwujekwe OE (2013). Financing Immunization for results in Nigeria: Who funds, who disburses, who utilizes, who accounts? Financing bottlenecks and accountability challenges. African Journal of Health Economics, 2(2):20-34

38. Mbachu C, Uzochukwu B, Onwujekwe O, Ilika AL and Oranuba J (2013). How do health workers perceive and practice monitoring and evaluation of malaria control interventions in South-east Nigeria? BMC Health Services Research,13:81 doi:10.1186/1472-6963-13-81

39. Okoli C and Onwujekwe O (2013). Access and equity to health care: An Assessment of Economic Methodologies and Empirical Findings. Nigerian Journal of Economic and Social Studies (NJESS). 55 (2): 

40. Onwujekwe OE, Umeano-Enemuoh JC, Uzochukwu BSC and Malik E (2013). Households’ incidence on malaria and expenditures to treat malaria in Sudan: what role does use of different vector control tools play in rural and urban locations? Journal of College of Medicine; 18(1):26-38

41. Ewelukwa O, Onoka C and Onwujekwe O (2013). Viewing health expenditures, payment and coping mechanisms with an equity lens in Nigeria. BMC Health Services Research. 9;13:87. doi: 10.1186/1472-6963-13-87.

42. Enemuoh JC, Onwujekwe OE, Uzochukwu BSC, Oranuba J and Ilika AL (2013). Quality of Monitoring and Evaluation of Malaria Control Activities: Tracking Stock-Outs and Replenishment of Supplies in Anambra State, Nigeria. Science Journal of Public Health. 1 (5): 201-208. doi: 10.11648/j.sjph.20130105.13

43. Onwujekwe O, Hanson K and Uzochukwu B (2012). Examining inequities in incidence of catastrophic health expenditures on different healthcare services and health facilities in Nigeria. PLOS One;7(7):e40811.

44. Ezeoke OP, Ezumah NN, Chandler C, Mangham-Jefferies LJ, Onwujekwe OE, Wiseman V and Uzochukwu BS (2012)  Exploring health providers' and community perceptions and experiences with malaria tests in south-east Nigeria: a critical step towards appropriate treatment. Malaria Journal, 11(1):368. 

45. Onwujekwe OE, Hanson K and Uzochukwu B (2012). Are the poor differentially benefiting from provision of priority public health services? A Benefit incidence analysis in Nigeria. International Journal for Equity in Health,11(1):70

46. Ezenduka C, Post E, Steven J, Suraj A, Namadi A and Onwujekwe O (2012).  Cost-effectiveness analysis of different methods for detecting leprosy in Northern Nigeria. Plos Neglected Tropical Diseases; 6(9): e1818. doi:10.1371/journal.pntd.0001818

47. Onoka CA, Onwujekwe OE, Hanson K and Uzochukwu BS (2012). Sub-optimal delivery of intermittent preventive treatment for malaria in pregnancy in Nigeria: influence of provider factors. Malaria Journal, 11(1):317 

48. Howe LD, Galobardes B, Matijasevich A, Gordon D, Johnston D, Onwujekwe O, Patel R, Webb EA, Lawlor DA, Hargreaves JR (2012). Measuring socioeconomic position for epidemiological studies in low- and middle-income countries – a methods of measurement in epidemiology paper. International Journal of Epidemiology, 41(3):871-886

49. Onwujekwe OE, Ogbonna C, Uguru NP, Uzochukwu BSC, Lawson A and Ndyanabangi B (2012).  Increasing access to modern contraceptives: the potential role of community solidarity through altruistic contributions.  International Journal for Equity in Health: 11:34

50. Wiseman V, Ezeoke O, Nwala E, Mangham L, Cundill B, Enemuo C, Uchegbu E, Uzochukwu B, Onwujekwe O. (2012). A cost-effectiveness analysis of provider and community interventions to improve the treatment of uncomplicated malaria in Nigeria: study protocol for a cluster randomized controlled trial. Trials, 13:81.

51. Onwujekwe OC, Soremekun RO, Uzochukwu B, Shu E and Onwujekwe O (2012). Patterns of case management and chemoprevention for malaria-in-pregnancy by public and private sector health providers in Enugu state, Nigeria. BMC Research Notes.  5:211.

52. Onwujekwe O and Velényi E (2012). Willingness to pay for private voluntary health insurance in southeast Nigeria. African Journal of Health Economics; 1(1):109-118.

53. Onoka CA, Onwujekwe OE, Uzochukwu B, Uguru N, Anochie C and Ewelukwa O (2012).Variations in incidence out of pocket spending for Illness amongst households of different socio-economic groups: An investigation using expenditure diaries. African Journal of Health Economics; 1(1): 77-88

54. Gordon D, Howe LD, Galobardes B, Matijasevich A, Johnston D, Onwujekwe O, Patel R, Webb EA, Lawlor DA and Hargreaves JR (2012). Authors Response to: Alternatives to principal components analysis to derive asset based indices to measure socio-economic position in low and middle income countries: the case for multiple correspondence analysis. International Journal of Epidemiology 41(4): 1209-1210.

55. Onwujekwe O, Uzochukwu BSC and Kirigia J  (2012). Basis for effective community-based Health Insurance schemes: investigating inequities in catastrophic out-of-pocket health expenditures, affordability and altruism. African Journal of Health Economics; 1(1):9-20.

56. Mbachu CO, Onwujekwe OE, Uzochukwu BSC, Uchegbu E, Oranuba J and Ilika AL (2012). Examining equity in access to long-lasting insecticide nets and artemisinin-based combination therapy in Anambra state, Nigeria.  BMC Public Health 2012, 12:315 doi:10.1186/1471-2458-12-315

57. Onoka CA, Uzochukwu BS, Onwujekwe OE, Chukwuka C, Ilozumba J, Onyedum C, Nwobi EA and Onwasigwe C. (2012). Retention and Loss to Follow-Up in Antiretroviral Treatment Programmes in South-East Nigeria. Pathogens and Global Health. 106(1): 46-54(9)

58. Ezeoke OP, Onwujekwe OE and Uzochukwu BS. (2012). Towards universal coverage: examining costs of illness, payment and coping strategies to different population groups in southeast Nigeria. American Journal of Tropical Medicine and Hygiene;  86(1): 52–57

59. Onoka CA, Hanson K and Onwujekwe OE (2012). Low coverage of intermittent preventive treatment for malaria in pregnancy in Nigeria: demand-side influences. Malaria Journal. 11(1):82

60. Onwujekwe O, Hanson K and Uzochukwu BSC (2011). Do poor people use poor quality providers?  Evidence from the treatment of presumptive malaria in Nigeria. Tropical Medicine & International Health 16(9): 1087-1098

61. Uzochukwu B, Onwujekwe O, Ezuma NN, Ezeoke O, Ajuba M and Sibeudu F (2011). Improving rational treatment of malaria: perceptions and influence of RDTs on prescribing behaviour of health workers in southeast Nigeria. PLoS ONE 6(1): e14627. doi:10.1371/journal.pone.0014627

62. Onwujekwe O, Onoka C, Uzochukwu B and Hanson K (2011). Constraints to universal coverage: Inequities in health service use and expenditures for different health conditions and providers. International Journal for Equity in Health. 13;10(1):50.

63. Onoka CA, Hanson K, Onwujekwe O and Uzochukwu B (2011). Examining catastrophic health expenditures at variable thresholds using household consumption expenditure diaries. Tropical Medicine & International Health. 16(10):1334-1341

64. Onwujekwe O, Uzochukwu B, Ezeoke O and Uguru N (2011). Health Insurance: Principles, Models and the Nigerian National Health Insurance Scheme. Journal of College of Medicine; 16(1):45-56.

65. Nwala E, Uzochukwu B and Onwujekwe O (2011).  Health workers perceptions of the factors affecting the implementation of health related millennium development goals in South-east Nigeria. Journal of Development Studies:6[1].

66. Onwujekwe OE, Ezeoke OP,  Mustafa SH, Uzochukwu BSC, Onwujekwe OC, Mustafa EM and Mnzava A (2011). Financing and delivery mechanisms for mosquito control tools in Sudan: A Strengths Weaknesses Opportunities and Threats (SWOT) analysis. Journal of College of Medicine 16(2):9-17.

67. Kirigia JM, Asbu EZ, Kirigia DG, Onwujekwe O, Fonta WM, Ichoku HE (2011). Technical efficiency of human resources for health in Africa.  European Journal of Business and Management. 3(4): 321-345

68. Onwujekwe O, Chukwuogo O Ezeoke U, Uzochukwu B and Eze S (2011). Asking people directly about preferred health seeking behavior yields invalid response: An experiment in South east Nigeria. Journal of Public Health. 33(1):93-100

69. Ichoku HE, Fonta W, Onwujekwe O and Kirigia J (2011).  Evaluating the Technical Efficiency of Hospitals in South-eastern Nigeria.  European Journal of Business and Management.  3(2):24-37. 

70. Onwujekwe O, Onoka C, Uguru N, Tasie N, Uzochukwu U, Kirigia J and Petu A (2011). Socio-economic differences in acceptability of community-based health insurance in southeast Nigeria. Public Health. 2011), doi:10.1016/j.puhe.2011.09.006

71. Mangham L, Cundill B, Ezeoke O, Nwala E, Uzochukwu BSC, Wiseman V, Onwujekwe O (2011). Treatment of uncomplicated malaria at public health facilities and medicine retailers in south-eastern Nigeria. Malaria Journal, 10:155

72. Onwujekwe O, Uzochukwu B, Malik E, Mustafa SH  and Mnzava A  (2011). Analysis of costs and outcomes of four malaria vector control tools in two states of Sudan. Medikka. 10-18.

73. Uzochukwu BSC, Onwujekwe O et al (2011). Voluntary Counseling and Testing (VCT) for HIV/AIDS: A study of the Knowledge, Awareness and willingness to pay for VCT among students in tertiary institutions in Enugu State Nigeria. Health Policy, 99(3):277-84.

74. Onwujekwe O, Obikeze E, Uzochukwu B, Okoronkwo I and Onwujekwe OC (2010). Improving quality of malaria treatment services: assessing inequities in consumers’ perceptions and providers’ behaviour in Nigeria. International Journal for Equity in Health 2010, 9:22

75. Uzochukwu BSC, Onwujekwe O, Ezeoke OP, Uguru NP, Ezeoke U and Ajuba MN (2010). Health sector reform processes in Nigeria: A review of factors that have enabled or constrained policy implementation in Enugu and Anambra states of Nigeria. Journal of College of Medicine. 15(1):3-14.

76. Onwujekwe O, Uzochukwu B, Dike N and Ezeoke O. (2010). Informal payments for healthcare: differences in expenditures from consumers and providers perspectives for treatment of malaria in Nigeria. Health Policy, 96:72-79

77. Uzochukwu BSC, Onwujekwe O, Umeobieri AK, Ossai EN, Ibiok NC, Ezeoke U and Ajuba MN (2010) Prevalence and risk factors for schistosomiasis in a rural community of south-east Nigeria. Journal of College of Medicine. 15(1):56-65

78. Onwujekwe O, Okereke E, Onoka C, Uzochukwu B, Kirigia J and Petu A (2010). Willingness to pay for community based health insurance: Do economic status and place of residence matter? Health Policy and Planning; 25(2):155-161

79. Uzochukwu B, Chiegboka L, Enwereuzo C, Nwosu U, Okorafor D, Onwujekwe O, Uguru N, Sibeudu F and Ezeoke O  (2010). Examining appropriate diagnosis and treatment of malaria: availability and use of rapid diagnostic tests and artemisinin-based combination therapy in public and private health facilities in south east Nigeria. BMC Public Health, 10:486

80. Onwujekwe O, Hanson K,  Uzochukwu B,  Ichoku H, Ikeh E and Onwughalu B. (2010). Are malaria treatment expenditures catastrophic to different socio-economic and geographic groups and how do they cope with payment in southeast Nigeria? Tropical Medicine and International Health, 15 (1): 18–25 

81. Onwujekwe O, Chima Onoka, Nkoli Uguru, Nnenna Tasie, Benjamin Uzochukwu, Soludo Eze, Joses Kirigia and Amos Petu (2010).  Preferences for different benefit packages for community-based health insurance: an exploratory study in Nigeria. BMC Health Services Research, 10:162

82. Onoka C,  Onwujekwe O and Uzochukwu BSC.  (2010). Challenges in actual implementation of health policies: a review of payment exemption in Nigeria. Journal of College of Medicine 15(2):57-63

83. Onwujekwe O, Uzochukwu BSC and Ezeoke O.  (2010). Socio-economic inequalities in cost of seeking treatment for malaria in southeast  Nigeria. Journal of College of Medicine 15(2):2-16.

84. Uzochukwu B, Ezeoke O, Ukaegbu U, Onwujekwe O and Sibeudu F (2010). Malaria treatment services in Nigeria: a review. Nigerian Medical Journal 15(3)

85. Onwujekwe O, Hanson K, Uzochukwu B, Ezeoke O, Eze S and Dike N (2010). Geographic inequities in provision and utilization of malaria treatment services in southeast Nigeria: diagnosis, providers and drugs. Health Policy. 94:144-149

86. Uguru N, Onwujekwe O, Tasie N, Uzochukwu B and Ezeoke U (2010). Do consumers' preferences for improved provision of malaria treatment services differ by their socio-economic status and geographic location? A study in southeast Nigeria. BMC Public Health,10:7

87. Onwujekwe O, Uzochukwu B, Obikeze E, Okoronkwo I, Ochonma O, Onoka C, Madubuko G and Okoli C (2010). Investigating determinants of out-of-pocket spending and strategies for coping with payments for healthcare in southeast Nigeria. BMC Health Services Research, 10:67

88. Uzochukwu B, Onwujekwe O, Uguru N, Ughasoro M and Ezeoke O (2010). Willingness to Pay for Rapid Diagnostic Tests for the diagnosis and treatment of Malaria in southeast Nigeria: Ex Post and Ex Ante. International Journal of Equity in Health. 15;9:1 

89. Onwujekwe O, Dike N, Chukwuka C, Uzochukwu B, Onyedum C,  Onoka C and Ichoku H (2009) Examining catastrophic costs and benefit incidence of subsidized anti-retroviral treatment programme in south-east Nigeria Health Policy, 90:223-229.

90. Onwujekwe O, Uzochukwu B, Dike N, Okoli C, Eze S and Chukwuogo O (2009). Are there geographic and socio-economic differences in incidence, burden and prevention of malaria? A study in southeast Nigeria. International Journal of Equity in Health, 8:45

91. Uzochukwu B, Obikeze E, Onwujekwe O, Onoka C and Griffiths U (2009). Cost-effectiveness analysis of rapid diagnostic test, microscopy and syndromic approach in the diagnosis of malaria in Nigeria: implications for scaling-up deployment of ACT. Malaria Journal, 8:265.

92. Uguru NP, Onwujekwe O, Uzochukwu BS, Igiliegbe GC and Eze S (2009). Inequities in incidence, morbidity and expenditures on prevention and treatment in southeast Nigeria. BMC International Health and Human Rights, 9(1):21

93. Onwujekwe O, Onoka C, Uzochukwu B, Okoli C, Obikeze E and Eze S (2009). Is community-based health insurance an equitable strategy for paying for healthcare? Experiences from southeast Nigeria. Health Policy 92: 96-102

94. Onwujekwe O, Uzochukwu B, Dike N, Uguru N, Nwobi E and Shu E (2009). Malaria treatment perceptions, practices and influences on provider behavior: Comparing hospitals and non-hospitals in southeast Nigeria. Malaria Journal, 8:246

95. Uzochukwu BSC, Onwujekwe OE, Onoka C, Okoli C, Uguru N and Chukwuogo O (2009). Determinants of non-adherence to anti-retroviral therapy in southeast Nigeria. Health Policy and Planning 24(3):189-96

96. Onwujekwe O, Kaur H, Dike N, Shu E, Uzochukwu B, Hanson K, Okoye V and Okonkwo P (2009). Quality of anti-malarial drugs provided by public and private healthcare providers in southeast Nigeria. Malaria Journal. Feb 10;8(1):22.

97. Madubuko G, Onwujekwe O, Obikeze E, Uzochukwu B, Okoronkwo I and Ogbonnia O (2009) Burden of endemic disease and health seeking behaviour in Ebonyi State, Nigeria: Socio-economic status and geographic differences. African Journal of Nursing and Midwifery 11(2): 98  - 112

98. Ichoku H, Fonta W and Onwujekwe O (2009). Incidence and intensity of catastrophic healthcare financing and impoverishment due to out-of-pocket payments in southeast Nigeria. Journal of Insurance and Risk Management 4(4):47-59

99. Onwujekwe OE, Onoka C, Uzochukwu B, Obikeze E and Ezumah N (2008). Issues in equitable health financing: socio-economic and geographic differences in households’ illness expenditures and policy makers’ views on the financial protection of the poor. Journal of International Development.20:1-15

100. Madubuko G, Eze S, Onwujekwe O and Uzochukwu B (2008). Who pays for the poor? Enhancing equity in paying for healthcare in public facilities in Enugu and Ebonyi states of southeast Nigeria: existence of discretional fees. Pan African Journal Series. 1(12):57-66.   

101. Onwujekwe O, Hanson K and Fox-Rushby J (2008). Construct Validity of the Bidding Game, Binary with Follow-up, and a Novel Structured Haggling Question Format in Determining Willingness to Pay for Insecticide-Treated Mosquito Nets. Medical Decision Making. 28(1):90-101.

102. Uzochukwu B, Onwujekwe O, Ezeilo E, Nwobi E, Ndu A and Onoka C (2008). Scaling-up Integrated Management of Childhood Illness (IMCI) in Nigeria: Will Short term training of Health workers improve their Performance? Public Health. 122(4):367-70.

103. Onwujekwe O, Uzochukwu B, Eze S, Obikeze E, Okoli C, Ochonma O (2008) Improving equity in malaria treatment:  Relationship of socio-economic status with health seeking as well as with perceptions of ease of using the services of different providers for the treatment of malaria in Nigeria. Malaria Journal 2008, 7:5doi:10.1186/1475-2875-7-5

104. Uzochukwu B, Onwujekwe O, Onoka C and Ughasoro M (2008). Rural-Urban Differences in Maternal Responses to Childhood Fever in South East Nigeria. Plos One. March 12: 3(3):e1788.

105. Shu EN, Eze EO, Nubila T and Onwujekwe O (2008). Ivermectin therapy for onchocerciasis: Effect on some hematological and biochemical parameters. Journal of College of Medicine, 13(1):7-12.

106. Onwujekwe O, Ojukwu J, Shu E and Uzochukwu B (2007). Inequities in valuation of benefits, choice of drugs and mode of payment for malaria treatment services provided by community health workers in Nigeria. American Journal of Tropical Medicine and Hygiene, 77(1): 16-21

107. Uzochukwu BS, Onwujekwe OE, Nwobi EA, Ndu AC, Onoka C. (2007) Households' perceptions and prioritization of tropical endemic diseases in Nigeria: implications for priority setting for resource allocation. World Health Population.9(3):36-47.

108. Onwujekwe O, Uzochukwu B, Ojukwu J, Dike N and Shu E (2007). Feasibility of a community health worker strategy for providing near and appropriate treatment of malaria in southeast Nigeria: an analysis of activities, costs and outcomes. Acta Tropica: 95-105.

109. Onwujekwe OE, Ojukwu J, Ezumah N, Uzochukwu B, Dike N and Eze S (2006). Socio-economic differences in preferences and willingness to pay for different providers of malaria treatment in southeast Nigeria. American Journal of Tropical Medicine and Hygiene 75(3): 421-429

110. Onwujekwe O et al (2006). Consumers stated and revealed preferences for community health workers and other strategies for the provision of timely and appropriate treatment of malaria in southeast Nigeria. Malaria Journal. 5:117.

111. Onwujekwe O, Malik EF, Mustafa SH and Mnzava A (2006). Do malaria preventive interventions reach the poor? Socio-economic inequities in expenditures and use of mosquito control tools in Sudan. Health Policy and Planning, 21(1):10-6.

112. Onwujekwe O, Hanson K and Fox-Rushby J (2006). Some indicators of socio-economic status may not be reliable and use of indices with these data could worsen equity. Health Economics. 13;15(6):639-644.

113. Dike N, Onwujekwe O, Ikeme A, Uzochukwu B and Shu E (2006). Do educational attainment and knowledge about malaria play a role in peoples’ perceptions, behaviour and practice to the disease control? Social Science and Medicine. 63(1):103-6.

114. Uzochukwu BSC and Onwujekwe OE (2006). Exemption policies and community preferences for exemption for tropical endemic diseases in the Bamako Initiative programme in Nigeria. Tropical Doctor; 36(3):132-6.

115. Onwujekwe OE (2005). Inequities in healthcare seeking in the treatment of communicable endemic diseases in Southeast Nigeria. Social Science and Medicine. 61(2):455-63

116. Onwujekwe O, Ojukwu J, Uzochukwu B, Dike N and Shu E (2005). Where do people from different socio-economic groups receive diagnosis and treatment for malaria in southeast Nigeria. Annals of Tropical Medicine and Parasitology, 99(5): 473-481.

117. Onwujekwe O, Uzochukwu B, Ezumah N and Shu E (2005). Increasing coverage of insecticide-treated nets in rural Nigeria: Implications of consumer knowledge, preferences and expenditures for malaria prevention. Malaria Journal. 18;4(1):29 

118. Wiseman VL, Onwujekwe O, Matovu F, Mutabingwa T and Whitty C (2005). Differences in willingness to pay for amodiaquine+artesunate, amodiaquine+sulfadoxine-pyrimathamine, artemether-lumefantrine or monotherapy: experiences from Tanzania. Bulletin of the World Health Organization. 83, 845-852.

119. Onwujekwe OE, Nkem Dike and Benjamin Uzochukwu (2005). Issues in measuring and improving the treatment of malaria in sub-Saharan Africa. Tropical Doctor; 35(4):224-5.

120. Onwujekwe OE, Fox-Rushby J and Hanson K (2005). Inter-rater and test-retest reliability of three contingent valuation question formats in south-east Nigeria. Health Economics, 14(5):529-36.

121. Onwujekwe O,  Malik EF, Mustafa SH  and Mnzava A (2005). Socio-economic inequity in demand for insecticide-treated nets, in-door residual house spraying, larviciding and fogging in Sudan. Malaria Journal. 15;4(1).

122. Onwujekwe OE and Uzochukwu BSC (2005). Socio-economic and geographic differentials in costs and payment strategies for primary health care services in Southeast Nigeria. Health Policy 71(3): 383-397

123. Onwujekwe OE, Hanson K and Fox-Rushby J (2005). Do divergences between stated and actual willingness to pay signify the existence of bias in contingent valuation surveys? Social Science and Medicine; 60(3):525-36

124. Uzochukwu B and Onwujekwe O (2005). Healthcare reform involving the introduction of user fees and Drug Revolving Funds: Influence on health workers’ behavior in South east Nigeria. Health Policy, 75(1):1-8. 

125. Okeibunor JC, Abiose A, Onwujekwe O,  Mohamed NA, Adekeye O, Ogungbemi MK, Amazigo UV (2005). Rapid monitoring of ivermectin treatment: will school-based surveys provide the answer? Annals of Tropical Medicine and Parasitology. 99(8):771

126. Onwujekwe OE (2004). Criterion and content validity of a novel structured haggling contingent valuation question format versus the bidding game and binary with follow-up questions. Social Science and Medicine, 58(3): 525 – 537.

127. Uzochukwu BSC, Onwujekwe OE and Erikson B (2004). Inequity in Bamako initiative: Implications for malaria control in southeast Nigeria. International Journal of Health Planning and Management19 Suppl 1:S107-16.

128. Onwujekwe OE, Hanson K and Fox-Rushby J (2004). Inequalities in acquisition of mosquito nets and willingness to pay for Insecticide-treated nets in Nigeria: Threats to successes of malaria control interventions.  Malaria Journal 2004, 3:6

129. Shu EN, Onwujekwe OE, Chijioke CP, Mbah AU, Nwaiwu O and Okonkwo PO. (2004). Suramin Treatment for Onchocerciasis: Cost Analysis of a Kinetically Optimized Regimen and the Standard Regimen, Journal of College of Medicine, 9(2), 121 – 124.

130. Uzochukwu BSC, Akpala CO and Onwujekwe OE. (2004). How do health workers and community members perceive and practice community participation in the Bamako Initiative programme in Nigeria? A case study of Oji River Local government area. Social Science and Medicine, 59(1):157-162.

131. Onwujekwe OE and Uzochukwu BSC (2004). Stated and actual altruistic willingness to pay for insecticide-treated nets in Nigeria: Validity of open-ended and binary with follow-up questions. Health Economics, 13(5): 477-492.

132. Onwujekwe OE, Fox-Rushby J and Hanson K (2004). Valuing the benefits of a health intervention using three different approaches to contingent valuation: re-treatment of mosquito bed-nets in Nigeria. Journal of Health Services Research and Policy, 9(2):67-75.

133. Uzochukwu BSC, Onwujekwe OE, Akpala CO (2004). Community satisfaction with the quality of maternal and child health services and willingness to pay for primary healthcare services: The case of the Bamako Initiative programme in Southeast Nigeria. East African Medical Journal, 81 (6): 293-299.

134. Shu EN, Onwujekwe OE and Okonkwo PO (2004). Ivermectin: Difficulties in resolving pharmacokinetics and pharmacodynamics relationships in onchocerciasis. Journal of College of Medicine, 9(1): 59-62.

135. Uzochukwu BSC, Onwujekwe OE, Akpala CO (2004). Did the Bamako initiative improve the utilization of maternal and child healthcare services in Nigeria? A case study of Oji River Local Government Area in Southeast Nigeria. Journal of Health and Population in Developing Countries, http://www.jhpdc.unc.edu. February 9.

136. Dike N, Onwujekwe O, Shu E and Uzochukwu B (2004). Market share of treatment sources before and after introducing community-based health workers in rural Nigeria.  Journal of Medical Research and Technology 1(1):

137. Onwujekwe OE, Benjamin Uzochukwu, Elvis Shu, Christian Ibeh and Paul Okonkwo (2004). Is combination therapy for malaria based on user-fees worthwhile and equitable to consumers? Assessment of costs and willingness to pay in Southeast Nigeria. Acta Tropica, 91(2): 101-115.

138. Uzochukwu BSC, Nwagbo DFE, Onwujekwe OE and Nwosu NA (2004). Patterns and Determinants of Utilization of Maternal Health Services: Implications for Reducing Maternal Mortality and Morbidity in South-east, Nigeria. Journal of College of Medicine, 9(1): 20-24.

139. Onwujekwe O and Uzochukwu U, Nwobi E and Ochonma G (2004) Inequalities in household expenditures to prevent and treat endemic tropical diseases in Southeast Nigeria: harnessing the information to improve equity in primary health care. Journal of Medical Research and Technology 1 (2): 28-38.

140. Uzochukwu BS and Onwujekwe OE (2004). Socio-economic differences and health seeking behaviour for the diagnosis and treatment of malaria: a case study of four local government areas operating the Bamako initiative programme in south-east Nigeria. International Journal of Equity in Health. 17;3(1):6. 

141. Uwaezuoke AIO, Uzochukwu BSC, Nwagbo DFE and Onwujekwe OE (2004). Teenage pregnancy in rural communities of south-east Nigeria: A neglected tragedy. Journal of College of Medicine, 9(1): 28-33.

142. Onwujekwe OE, Shu EN, Ghasi S, Nwagbo DFE, Uzochukwu BSC, Onyido A and Onwuameze OE (2003). Assessing payment and pricing issues in establishing demand-responsive systems for community-based insecticide-treated nets programmes in Nigeria. Journal of College of Medicine, 8(2): 36-39.

143. Onwujekwe OE, Hanson K and Fox-Rushby J (2003). Who buys insecticide treated nets: Implications for increasing coverage in Nigeria. Health Policy and Planning; 18(3):279-289.

144. Uzochukwu BSC and Onwujekwe OE (2003). Inequity in utilisation of maternal health services: Implications for reducing maternal mortality. Nigerian Journal of Community Medicine and Primary Health Care, 15: 10 - 16.

145. Onwujekwe OE, C Akahara, BSC Uzochukwu and EN Shu. (2003). Should we really be promoting home or community-based malaria treatment? Insights from a study in Southeast Nigeria on the treatment of child-hood malaria. Journal of College of Medicine, 8(1):20-22.

146. Uzochukwu BSC and Onwujekwe OE (2003). Altruistic willingness to pay for family planning services: a study in Southeast Nigeria. Nigerian Journal of Community Medicine and Primary Health Care, 16:.

147. Onwujekwe OE and Nwagbo DFE (2002). Investigating starting-point bias: A survey of willingness to pay for insecticide-treated nets. Social Science and Medicine; 55(12):2121-30.

148. Uzochukwu BSC, Onwujekwe OE and Akpala CO (2002). Effect of the Bamako-Initiative drug revolving fund on availability and rational use of essential drugs in primary health care facilities in Southeast Nigeria. Health Policy and Planning; 17(4):378-383.

149. Onwujekwe OE, Chima RI, Shu EN and Okonkwo PO (2002). Community-Directed Treatment with Ivermectin  in two Nigerian communities: an analysis of first year start-up processes, costs and consequences. Health Policy, 62(1):31-51.

150. Onwujekwe OE,  Chima R, Shu E, Nwagbo DFE, Akpala C and Okonkwo P (2002). Altruistic willingness to pay in community-based sales of Insecticide-treated nets exists in Nigeria. Social Science and Medicine; 54(4):519-527.

151. Onwujekwe OE. (2001). Response to Brieger. Tropical Medicine and International Health; 6(1):85-86.

152. Onwujekwe OE, Chima R, Shu E, Nwagbo D and Okonkwo P (2001). Hypothetical and actual willingness to pay for Insecticide-treated nets: A study in five Nigerian communities. Tropical Medicine and International Health; 6(7):545-53.

153. Onwujekwe OE (2001). Searching for a better contingent valuation elicitation method in rural Nigeria. The Binary question with follow-up versus the bidding game technique. Health Economics; 10:147-158. 

154. Onwujekwe OE, Shu EN, Onwuameze OE, Ndum CC and Okonkwo PO (2001). Onchocerciasis control in Nigeria: Will households be able to afford community-directed treatment with ivermectin? Acta Tropica;80(3):277-281.

155. Onwujekwe OE, Chima RI and Okonkwo PO (2000). Economic burden of malaria illness versus that of a combination of all other illnesses: A study in five malaria holo-endemic communities. Health Policy;54:143-159.

156. Onwujekwe OE, Shu EN, Ndum CC and Okonkwo PO (2000). Treatment with ivermectin: what works in one community may not work in another. Journal of Epidemiology and Community Health;54:79-80.

157. Shu EN, Onwujekwe OE, Lokili P and Okonkwo PO (2000). A health club for a community school in south-eastern Nigeria: influence on adult perception of onchocerciasis and compliance with community-based ivermectin therapy. Tropical Medicine and International Health;5(3):222-226.

158. Shu EN, Onwujekwe OE and Okonkwo PO (2000). Do alcoholic beverages enhance availability of ivermectin? European Journal of Clinical Pharmacology;56 (5):437-438.

159. Onwujekwe OE, Shu, EN   and Okonkwo PO (2000). Community financing of local ivermectin distribution in Nigeria: Potential payment and cost-recovery outlook. Tropical Doctor; 30:91-94.

160. Onwujekwe OE, Akpala CO, Ghasi S, Shu EN and Okonkwo PO (2000). How do rural households perceive and prioritise malaria and mosquito nets? A study in five communities of Nigeria. Public Health;114:407-410.

161. Onwujekwe OE, Shu EN, Chima RI, Onyido A and Okonkwo PO (2000). Willingness to pay for the re-treatment of mosquito nets with insecticide in four communities of south-eastern Nigeria. Tropical Medicine and International Health;5(5): 370-376. 

162. Onwujekwe OE (1999). Are insecticide-treated nets affordable? Relating costs of two sizes of nets and net re-treatment with basic household expenditures. Transactions of the Royal Society of Tropical Medicine and Hygiene;93:571-572.

163. Shu EN, Okonkwo PO and Onwujekwe OE (1999). Health education to school children in Okpatu, Nigeria: impact on onchocerciasis-related knowledge. Public Health; 113:215-218.

164. Onwujekwe OE, Shu EN and Okonkwo PO (1999). Willingness to pay for the maintenance of equity in a local ivermectin distribution scheme in Toro, Northern Nigeria. Public Health; 113:193-194.

165. Onwujekwe OE, Shu EN and Okonkwo PO (1999). Can community leaders’ preferences be used to proxy those of the community as a whole? Journal of Health Services Research and Policy; 4 (3):133-138.

166. Shu EN, Nwadike KI, Onwujekwe OE, Ugwu OC and Okonkwo PO (1999). Influence of health education on community participation in rapid assessment of onchocerciasis prior to distribution of ivermectin. East African Medical Journal; 76:320-323.

167. Onwujekwe OE, Shu EN, Nwagbo D, Akpala CO and Okonkwo PO (1998). Willingness to pay for community-based ivermectin distribution: A study of three onchocerciasis endemic communities in Nigeria. Tropical Medicine and International Health; 3(10): 802-808

168. Uzochukwu BSC, Onwujekwe OE, Ibe OP and Ezumah NN (2015) Stakeholders’ values and power dynamics and relations in Community Based Health Insurance: Evidence from Anambra State Nigeria. African Journal of Health Economics, 4(1):

169. Okoronkwo I, …, and Onwujekwe O (In press). Socio-economic inequities and payment coping mechanisms used  in the treatment of type2 diabetes mellitus in Nigeria. Nigerian Journal of Clinical Practice 

170. Onwujekwe O, Uguru N, Russo G, Etiaba E, Mbachu C, Tolib Mirzoev and Benjamin Uzochukwu (2015). Role and use of evidence in policy-making: An analysis of case studies from the health sector in Nigeria. Health Research Policy and Systems

 

PUBLICATIONS IN BOOKS 

1. Onwujekwe O, Barry S, Siddiqi S, Kirigia J, Eze S and Uzochukwu B (2012). Chapter 4:Health System Governance in Nigeria. In O Olaniyan, AO Lawanson and O Olubajo (editors). Economics of Health System Governance and Financing in Nigeria: University of Ibadan Press. 

2. Uzochukwu U, Onwughalu B, Blas E, Onwujekwe O, Umeh D and Ezeoke U (2011). Chapter 9: Immunization programme in Anambra State, Nigeria: an analysis of policy development and implementation of the reaching every ward strategy. In Erik Blas, Johannes Sommerfeld and Anand Sivasankara Kurup (editors) (2011). Social determinants approaches to public health: from concept to practice. Geneva: World Health Organization.

3. Onwujekwe O and Velenyi E (2010). Chapter 13: Feasibility of Private Voluntary Health in Nigeria. In  Alexander S. Preker, Peter Zweifel and Onno Schellekens (editors) (2010). Global Marketplace for Private Health Insurance: Strength in Numbers. The World Bank: Washington DC. Pages 349-367. 

4. Obinna Onwujekwe (2009). Financial risk protection as means of achieving health Millennium Development Goals: Chapter 3: Organization and Financing of the Nigerian Health System. Strengthening Health Systems in Nigeria. Editors: Odubanjo MO, Badejo A, Sofola S. Lagos:The Nigerian Academy of Science. Pages 36 – 39.

5. Onwujekwe O (2008). Chapter 14: Achieving cost-effective, efficient and equitable interventions of primary healthcare in Nigeria. In Lucas A et al (editors). National Health Review 2007.  Primary Healthcare in Nigeria: 30 years after Alma Ata. Abuja: Health Reform Foundation of Nigeria

6. Obinna Onwujekwe (2002). Validity and reliability of the contingent valuation method: A study of the Willingness to pay for insecticide-treated nets amongst the Igbos of Nigeria. PhD  Thesis: University of London: London

7. Obinna Onwujekwe (1995). An Approach for Determining the Ability and Willingness of Communities to Finance the Control of Onchocerciasis Using Ivermectin in Nigeria. Department of Economics, Graduate School, Chulalongkorn University. ISBN 9746320475, 9789746320474.

 

PUBLICATIONS IN ENCYCLOPAEDIA  

1. Obinna Onwujekwe (2009). Willingness to Pay.  Encyclopedia of Medical Decision Making. Sage Publications: London

 

PUBLICATIONS IN NEWSLETTERS AND MIMEOGRAHS

1. Benjamin Uzochukwu, Obinna Onwujekwe and Chinyere Mbachu (2015). Implementing the Basic Health Care Provision Fund in Nigeria: A framework for accountability and good governance. London: RESYST Consortium. LSHTM.

2. Chima Onoka, Obinna Onwujekwe, Benjamin Uzochukwu and Nkoli Ezumah. (2012).Why are states not adopting the formal sector programme of the NHIS and what strategies can encourage adoption? Health Policy Research Group, College of Medicine UNEC, Enugu and Alliance for Policy and Systems Research/WHO, Geneva.

3. Chima Onoka, Obinna Onwujekwe, Benjamin Uzochukwu and Nkoli Ezumah. (2012). How stakeholder roles influence adoption of the formal sector programme of the NHIS by states. Health Policy Research Group, College of Medicine UNEC, Enugu and Alliance for Policy and Systems Research/WHO, Geneva.

4. Obinna Onwujekwe and Chijioke Okoli (2010). Editorial: Relevance of the study of health economics in the African context. HEPNET Newsletter, April 2010NU

5. Uzochukwu BSC, Onwujekwe OE, Eze Soludo, Ezuma Nkoli, Obikeze EN and Onoka CA (2009). Community Based Health Insurance Scheme in Anambra State, Nigeria: an analysis of policy development, implementation and equity effects. Consortium for Research on Equitable Health Systems: London School of Hygiene and Tropical Medicine, London, UK.

6. Uzochukwu BSC, Onwujekwe OE, Eze SoludoE, Ezumah Nkoli, Uguru Nkoli (2009). The District Health System in Enugu State, Nigeria: An analysis of policy development and implementation. Research Report. Consortium for Research on Equitable Health Systems, London: LSHTM.

7. Obinna Onwujekwe et al (2007). Issues in equitable health financing: socio-economic and geographic differences in illness cost-burden on households and policy makers’ views on the protection of the poor. London: CREHS Exchange Newsletter. June 2007

 

PUBLICATIONS IN PROCEEDINGS OF CONFERENCES:

1. Onwujekwe O, Ibe O, Kwasi T, Dada S, Uzochukwu B and Sanwo O (2015) Understanding the economic burden of HIV/AIDS treatment on households in Nigeria. 11th World Congress in Health Economics. International Health Economics Association, Milan, Italy, 11th to 15th July 2015.

2. Mbachu C, Enabulele F, Nwudele T, Alegu S, Anwara K and Onwujekwe O (2015) Willingness to Pay for Antiretroviral drugs among HIV/AIDS clients in Ebonyi state, Nigeria. Book of Abstracts. 11th World Congress in Health Economics. International Health Economics Association, Milan, Italy, 11th to 15th July 2015.

3. Etiaba E, Onwujekwe O, Torpey K, Uzochukwu B and Chiegil R (2015) Inequities in economic burden and catastrophic expenditure on HIV/AIDS treatment services after the introduction of subsidies: an exit poll survey in Nigeria. 11th World Congress in Health Economics. International Health Economics Association, Milan, Italy, 11th to 15th July 2015.

4. Wiseman V, Mitton C, Drake T, Conteh L and Onwujekwe O (2015). Systematic review of health priority setting initiatives using cost-effectiveness criteria in low- and middle-income countries. 11th World Congress in Health Economics. International Health Economics Association, Milan, Italy, 11th to 15th July 2015.

5. Ibe O, Etiaba E, Ezumah N, Okoli C, Uzochukwu B and Onwujekwe O  (2015). Is strategic purchasing a feasible mechanism in the publicly funded health system of Nigeria? 11th World Congress in Health Economics. International Health Economics Association, Milan, Italy, 11th to 15th July 2015.

6. Obinna Onwujekwe, Lindsay Mangham-Jefferies, Bonnie Cundill, Neal Alexander et al (2014). Effectiveness of Provider and School Interventions on the Treatment Provided to Febrile Patients Attending Public Primary Health Centres and Medicine Retailers in South-eastern Nigeria. ASTMH 63rd Annual Meeting New Orleans, USA, LA. November 2nd -6th 2014

7. Virginia Wiseman, Lindsay Mangham-Jefferies, Olivia Achondoh, Thomas Drake, Bonnie Cundill, Obinna Onwujekwe, Wifred Mbacham (2014). Economic evaluation of interventions to improve  health workers’ practice in diagnosing and treating uncomplicated malaria in Cameroon. ASTMH 63rd Annual Meeting New Orleans, USA, LA. November 2nd -6th 2014

8. Etiaba E, Uguru N, Ezumah N, Mirzoev T, Uzochukwu B, Obinna Onwujekwe (2014). The Oral Health Policy in Nigeria: The role of context and actors in its development and approval. Third Global Symposium on Health Systems Research. Cape Town 29 September to 4 October 2014

9. Bassey, Ebenso, Mahua Das, Bondiya Rawat, Obinna Onwujekwe, Guiliano Russo, Lucie Blok, Putthasi Weerasak, Reinhard Huss and Tolib Mirzoev. (2014). Collective influence of national actors on evidence-informed policy development: Case-study from India and Nigeria. Third Global Symposium on Health Systems Research. Cape Town 29 September to 4 October 2014

10. Chinyere Mbachu, Ifeanyi Chikezie, Sloudo Eze, Obinna Onwujekwe, Benjamin Uzochukwu and Nkoli Ezumah. Key influences over actors’ preferences and use of evidence in policy development: insights from the Nigerian IMNCH strategy. BMC Health Services Research 2014, 14(Suppl 2):P76  doi:10.1186/1472-6963-14-S2-P76

11. Reinhard Huss, Mahua Das, Bassey Ebenso, Bindiya Rawat, Obinna Onwujekwe, Giuliano Russo, Lucie Blok, Putthasri Weerasak and Tolib Mirzoev. Participation of policy actors in the development of health policies in India and Nigeria and the implications for the role of evidence in policy-making. BMC Health Services Research 2014, 14(Suppl 2):P27

12. Jane Enemuoh, Obinna Onwujekwe, Benjamin Uzochukwu, Joseph Oranuba and Amobi Ilika (2014) Does free distribution of long lasting insecticidal bed nests among pregnant women improve possession and usage? : Findings from cross sectional survey from 19 local government areas in Anambra state, South East Nigeria. The third African Health Economics and Policy Association (AfHEA) International Scientific Conference. Nairobi, Kenya: 11-13 March 2014. 

13. Benjamin Uzochukwu, Enyi Etiaba, Obinna Onwujekwe, Chinyere Mbachu, Chinenye Okwuosa, Monica Nystrom and Lucy Gilson(2014). The challenges of bridging the gap between researchers and policymakers: Experience of getting research into policy and practice in Nigeria. The third African Health Economics and Policy Association (AfHEA) International Scientific Conference. Nairobi, Kenya: 11-13 March 2014.

14. Chima Onoka, Obinna Onwujekwe, Benjamin Uzochukwu, and Nkoli Ezumah (2014). Constraints and enabling factors in scaling-up coverage with social health insurance in Nigeria. The third African Health Economics and Policy Association (AfHEA) International Scientific Conference. Nairobi, Kenya: 11-13 March 2014. 

15. Jane Enemuoh, Obinna Onwujekwe, Nkoli Ezumah, Lindsay Mangham- Jefferies, Benjamin Uzochukwu and Virginia Wiseman (2014). Improving equity in malaria treatment outcomes: relationship of patients socio-economic status with effective treatment received as well as with knowledge of health providers and characteristics of health facilities utilized for treatment of uncomplicated malaria. The third African Health Economics and Policy Association (AfHEA) International Scientific Conference. Nairobi, Kenya: 11-13 March 2014. 

16. Enyi Etiaba, Obinna Onwujekwe, Ifeanyi Chikezie, Benjamin Uzochukwu and Alex Adjagba (2014). Malaria treatment: Inequities in payment coping mechanisms in southeast Nigeria. The third African Health Economics and Policy Association (AfHEA) International Scientific Conference. Nairobi, Kenya: 11-13 March 2014. 

17. Obinna Onwujekwe et al (2013) Evaluation of interventions to support the introduction of RDTs in Nigeria at public facilities, pharmacies and PMDs. 4th MIM Conference, Durban, SA, October 2013.

18. Obinna Onwujekwe. Health System and Policy Development for Prevention of Cardiovascular Diseases in Nigeria. Pfizer Cardiovascular Summit. Lagos, Nigeria, 31st July 2013. 

19. Obinna Onwujekwe, Ifeanyi Chikezie, Nkoli Uguru, Benjamin Uzochukwu and Alex Adjagba (2013). Investigating the economic burden of malaria on households and the health system in Nigeria. Book of Abstracts, 9th Congress of the International Health Economics Association, Sydney, Australia. 

20. Daniel Ogbuabor, Benjamin Uzochukwu, Obinna Onwujekwe and Ijeoma Okoronkwo (2013). Examining determinants of job satisfaction and retention of public sector health workers in Nigeria. Book of Abstracts, 9th Congress of the International Health Economics Association, Sydney, Australia. 

21. Ezeoke Ogochukwu, Lindsay Mangham-Jefferies, Virginia Wiseman and Obinna Onwujekwe (2013). Comparing different data collection tools for estimating patient treatment costs for malaria: Experiences from Nigeria. Book of Abstracts, 9th Congress of the International Health Economics Association, Sydney, Australia. 

22. Maduka Ughasoro, Obinna Onwujekwe and Ngozi Ojinnaka (2013). The economic cost of treatment of childhood epilepsy in Enugu, Southeast Nigeria. Book of Abstracts, 9th Congress of the International Health Economics Association, Sydney, Australia.

23. Ogoamaka Chukwuogo, Eric Obikeze and Obinna Onwujekwe (2013). National Health Insurance Scheme in Nigeria: Who Benefits? Book of Abstracts, 9th Congress of the International Health Economics Association, Sydney, Australia. 

24. Obinna Onwujekwe, Ogochukwu Onwujekwe and Rebecca Soremekun (2012). Examining level of use of chemotherapy, chemoprophylaxis and intermittent-preventive treatment of malaria in pregnancy by pregnant women in Nigeria. 61st Meeting of the American Society of Tropical Medicine and Hygiene (ASTMH). The American Journal of Tropical Medicine and Hygiene, 87(5 Supplement),177. 

25. Mahua Dash, Tolib Mirzoev, Reinhard Huss, Guiliano Russo, Ana Trinidade, Lucie Blok, Yme Van den Berg, Roger Bymolt, Obinna Onwujekwe and Benjamin Uzochukwu (2012). Understanding robust monitoring and evaluation for aid effectiveness. 2nd Global Symposium on Health Systems Research, Beijing, China, 30th October to 3rd November 2012.

26. Obinna Onwujekwe (2012) Using school-based interventions to promote appropriate treatment of malaria.  ACT Consortium Annual Conference, 25-27 September, Oxford, UK.

27. Obinna Onwujekwe and Chijioke Okoli (2012) Access and Equity to Health Care: An Assessment of Economic Methodologies and Empirical Findings. Paper presented at the 53rd Annual Conference of the Nigeria Economic Society (NES) on 27th - 30th August 2012, at the Nicon Luxury Hotel, Abuja.

28. Obinna Onwujekwe and Benjamin Uzochukwu (2011) Imperative for Health Financing Reforms in Nigeria: High Incidence of Catastrophic Health Expenditures on Different Healthcare Services in Nigeria. Abstract book. 8th World Congress. International Health Economics Association (iHEA). Toronto, Canada 

29. Obinna Onwujekwe, Lindsay Mangham, Bonnie Cundhill, Ogochukwu Ezeoke, Benjamin Uzochukwu, Virginia Wiseman (2011). Inappropriate Provision and Treatment of Malaria in Public and Private Sectors in Nigeria: Threat to Malaria Elimination Efforts. Third International Conference for Improving Use of Medicines. November 14-18, 2011 Antalya, Turkey. 

30. Lindsay Mangham, Bonnie Cundill, Ogochukwu Ezeoke, Emmanuel Nwala, Benjamin Uzochukwu, Virginia Wiseman, Obinna Onwujekwe (2011). Role of Patient Demand in the Treatment of Uncomplicated Malaria at Public and Private Health Facilities in Southeastern Nigeria. Third International Conference for Improving Use of Medicines. November 14-18, 2011 Antalya, Turkey.

31. Obinna Onwujekwe,  Nkem Dike, Benjamin Uzochukwu, Ogochukwu Ezeoke (2011). Informal Payments for Health Care: Differences in Expenditures from Consumers and Providers Perspectives for Treatment of Malaria in Nigeria. Third International Conference for Improving Use of Medicines. November 14-18, 2011 Antalya, Turkey. 

32. Soludo B. Eze, Neil Spicer, Obinna Onwujekwe, BSC Uzochukwu(2011). Health Systems Barriers that Determine Access to Antiretroviral Drugs in Southeast Nigeria. Third International Conference for Improving Use of Medicines: Informed Strategies, Effective Policies, Lasting Solutions. November 14-18, 2011 Antalya, Turkey.

33. Obinna Onwujekwe, Eric Obikeze, Benjamin Uzochukwu, Ijeoma Okoronkwo, Ogochukwu Onwujekwe (2011). Improving Quality of Malaria Treatment Services: Assessing Inequities in Consumers' Perceptions and Providers’ Behaviour in Nigeria. Third International Conference for Improving Use of Medicines. November 14-18, 2011 Antalya, Turkey.  

34. Benjamin Uzochukwu, Obinna Onwujekwe and Ogoamaka Chukwuogo (2011). Removal of User Fees for Maternal and Child Health Services in South East Nigeria: Experiences of the Community and Health Care Providers. Abstract book. 8th World Congress. International Health Economics Association (iHEA). Toronto, Canada

35. Lindsay Mangham, Obinna Onwujekwe, Bonnie Cundill, Benjamin Uzochukwu, Ogochukwu Ezeoke and Emmanuel Nwala (2011). Improving Availability and Appropriate Use of New Antimalarial Medicines: New Evidence on the Supply and Demand Sides. Abstract book. 8th World Congress. International Health Economics Association (iHEA). Toronto, Canada 

36. Lindsay Mangham, Virginia Wiseman, Obinna Onwujekwe, Bonnie Cundill, Benjamin Uzochukwu, Ogochukwu Ezeoke and Emmanuel Nwala (2011). Determinants of Provider Practice in the Treatment of Uncomplicated Malaria in South-eastern Nigeria. Abstract book. 8th World Congress. International Health Economics Association (iHEA). Toronto, Canada

37. Obinna Onwujekwe and Benjamin Uzochukwu (2011). Examining incidence of catastrophic health expenditures on different healthcare services in Nigeria. 2nd Conference of the African Health economics and Policy Association (AfHEA). Senegal, March 15 - 17.

38. Obinna Onwujekwe, Hyacinth Ichoku and Benjamin Uzochukwu (2011). Financing incidence of out-of-pocket spending for healthcare in Nigeria. 2nd Conference of the African Health economics and Policy Association (AfHEA). Senegal, March 15 - 17.

39. Eric Obikeze, Obinna Onwujekwe, Kara Hanson, BSC Uzochukwu, Ogoamaka Chukwuogo, Eloka Uchegbu and Chike Onochie (2011). Benefit incidence of National Health Insurance Scheme in southeast Nigeria: implications for financial risk protection against healthcare costs.  2nd Conference of the African Health economics and Policy Association (AfHEA). Senegal, March 15 - 17.

40. Chinwe Ogbonna, Bannet A. Ndyanabangi, Obinna Onwujekwe, Agathe Lawson, Bose Adeniran (2011). Willingness to pay and benefit-cost analysis of modern contraceptives in Nigeria464.  International Conference on Family Planning. Dakar, Senegal. 2011. Nov 29 to Dec 2. 

41. Ogochukwu Ezeoke, Obinna Onwujekwe and Benjamin Uzochukwu (2011). Examining household treatment seeking, costs of illness and payment mechanisms in southeast Nigeria. 2nd Conference of the African Health economics and Policy Association (AfHEA). Senegal, March 15 - 17. 

42. Nkolika Uguru, Chima Onoka, Obinna Onwujekwe and Benjamin Uzochukwu (2011). Variations in out-of-pocket payment among different socio-economic groups in southeast Nigeria. 2nd Conference of the African Health economics and Policy Association (AfHEA). Senegal, March 15 - 17. 

43. Chima Onoka, Obinna Onwujekwe, Kara Hanson and Benjamin Uzochukwu (2011). Catastrophic health expenditures at variable threshold levels. 2nd Conference of the African Health economics and Policy Association (AfHEA). Senegal, March 15 - 17.

44. Chijioke Okoli, Obinna Onwujekwe, Benjamin Uzochukwu and Eric Obikeze (2011). Examining community-based health insurance (CBHI) financial risk protection in southeast Nigeria. 2nd Conference of the African Health economics and Policy Association (AfHEA). Senegal, March 15 - 17. 

45. Obinna Onwujekwe et al (2011). Imperative for health financing reforms in Nigeria: High incidence of catastrophic health expenditures on different healthcare services in Nigeria. 8th International Health Economics Association (iHEA) World Congress, Toronto Canada

46. Soludo Eze, Neil Spicer, Obinna Onwujekwe, BSC Uzochukwu, JC Chukwuka (2011). Is universal access to antiretrovirals a reality or myth? Evidence from a survey on access to antiretroviral drugs in southeast Nigeria. 8th International Health Economics Association (iHEA) World Congress, Toronto Canada.

47. Emma Nwala, Benjamin Uzochukwu and Obinna Onwujekwe (2011). Health workers perceptions of the factors affecting the implementation of interventions for health-related millennium development goals in south-east Nigeria. Sixth International Conference on Development Studies. Feb 1-4. Benue State University, Makurdi, Nigeria.

48. Obinna Onwujekwe and Benjamin Uzochukwu (2010). Equity in use of public expenditures: Benefit incidence analysis of priority public health services in southeast Nigeria. 1st Global Symposium of Health Systems Research, Montreux, Switzerland, Nov 15 to 19, 2010.

49. Obinna Onwujekwe. Building capacity in health economics in West African: prospects and challenges of the West African Health Economics Network (WAHEN). Proceedings of the 1st forum of the Initiative for strengthening health research capacity in Africa (ISHRECA), Ouagadougou, Burkina Faso, 11th to 13th July 2010. 

50. Obinna Onwujekwe, Kara Hanson, Benjamin Uzochukwu, Hyacinth Ichoku, Edith Ikeh, Cyril Onwughalu “Are malaria treatment expenditures catastrophic to different socio-economic and geographic groups and how do they cope with payment? A study in southeast Nigeria” [MIM 16669130] Proceedings of the 5rd MIM Pan-African Conference, Nairobi, Kenya. November 2009.

51. Benjamin Uzochukwu. M.D. Ughasoro. Obinna Onwujekwe, E.N. Obikeze, N.N. Ezuma. C.A. Onoka (2009).  “Health-seeking behaviour and the cost of presumptive diagnosis compared to rapid diagnostic testing in malaria treatment in South East Nigeria in the era of combination therapy” [MIM 14983940]. Proceedings of the 5rd MIM Pan-African Conference, Nairobi, Kenya. November 2009.

52. Eric Obikeze, Benjamin Uzochukwu, Obinna Onwujekwe, Chima Onoka, Soludo Eze, Maduka Ughasoro, Emeka Agbata “Willingness to pay for Rapid Diagnostic Test (RDT) for Malaria in the Southeast, Nigeria”. Proceedings of the 5rd MIM Pan-African Conference, Nairobi. November 2009.

53. Ogochukwu Onwujekwe, Benjamin Uzochukwu, Ijeoma Okoronkwo, Eric Obikeze, Edith Ikeh, Obinna Onwujekwe “Technical and perceived quality of malaria treatment services of public and private healthcare providers in urban and rural areas of southeast Nigeria” [MIM16676099] Proceedings of the 5rd MIM Pan-African Conference, Nairobi, Kenya. November 2009.

54. E.N.Shu, N.Dike, Obinna Onwujekwe, N.Ezumah, P.O.Okonkwo “Consumer prioritization and risk perception of malaria and intermittent preventive treatment for malaria in pregnancy in southeast Nigeria”. Proceedings of the 5rd MIM Pan-African Conference, Nairobi, Kenya. November 2009.

55. Ogochukwu Ezeoke, Obinna Onwujekwe, Benjamin Uzochukwu “Geographic inequities in provision and utilization of malaria treatment services in southeast Nigeria: Diagnosis, providers and drugs”. Proceedings of the 5rd MIM Pan-African Conference, Nairobi, Kenya. November 2009.

56. Benjamin S.C. Uzochukwu, Eric N. Obikeze, Obinna Onwujekwe, Ulla Griffiths “Cost-effectiveness analysis of use of RDT, microscopy and clinical examination/history in the diagnosis and treatment of malaria, implications for ACT treatment policy in Nigeria” [MIM14818968] Proceedings of the 5rd MIM Pan-African Conference, Nairobi, Kenya. November 2009.

57. U.E.Ezeoke, E.N.Shu, Obinna Onwujekwe, P.O.Okonkwo, B.C.Ozumba “Pattern of health seeking behaviour of women on malaria treatment during pregnancy in rural and urban Nigeria. Proceedings of the 5rd MIM Pan-African Conference, Nairobi, Kenya. Novembe




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