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Items: 1 to 20 of 21


Lessons learned from respondent-driven sampling recruitment in Nairobi: experiences from the field.

Okal J, Raymond HF, Tun W, Musyoki H, Dadabhai S, Broz D, Nyamu J, Kuria D, Muraguri N, Geibel S.

BMC Res Notes. 2016 Mar 11;9(1):158. doi: 10.1186/s13104-016-1965-y.


Kenyan female sex workers' use of female-controlled nonbarrier modern contraception: do they use condoms less consistently?

Yam EA, Okal J, Musyoki H, Muraguri N, Tun W, Sheehy M, Geibel S.

Contraception. 2016 Mar;93(3):222-5. doi: 10.1016/j.contraception.2015.11.010. Epub 2015 Dec 1.


Erratum: Lessons from sexual and reproductive health voucher program design and function: a comprehensive review.

Grainger C, Gorter A, Okal J, Bellows B.

Int J Equity Health. 2015 Feb 17;14(1):20. doi: 10.1186/s12939-015-0139-1.


HIV and STI prevalence and risk factors among male sex workers and other men who have sex with men in Nairobi, Kenya.

Muraguri N, Tun W, Okal J, Broz D, Raymond HF, Kellogg T, Dadabhai S, Musyoki H, Sheehy M, Kuria D, Kaiser R, Geibel S.

J Acquir Immune Defic Syndr. 2015 Jan 1;68(1):91-6. doi: 10.1097/QAI.0000000000000368.


Prevalence of HIV, sexually transmitted infections, and risk behaviours among female sex workers in Nairobi, Kenya: results of a respondent driven sampling study.

Musyoki H, Kellogg TA, Geibel S, Muraguri N, Okal J, Tun W, Fisher Raymond H, Dadabhai S, Sheehy M, Kim AA.

AIDS Behav. 2015 Feb;19 Suppl 1:S46-58. doi: 10.1007/s10461-014-0919-4.


HIV and STI prevalence and injection behaviors among people who inject drugs in Nairobi: results from a 2011 bio-behavioral study using respondent-driven sampling.

Tun W, Sheehy M, Broz D, Okal J, Muraguri N, Raymond HF, Musyoki H, Kim AA, Muthui M, Geibel S.

AIDS Behav. 2015 Feb;19 Suppl 1:S24-35. doi: 10.1007/s10461-014-0936-3.


A taxonomy and results from a comprehensive review of 28 maternal health voucher programmes.

Bellows BW, Conlon CM, Higgs ES, Townsend JW, Nahed MG, Cavanaugh K, Grainger CG, Okal J, Gorter AC.

J Health Popul Nutr. 2013 Dec;31(4 Suppl 2):106-28. Review.


Lessons from sexual and reproductive health voucher program design and function: a comprehensive review.

Grainger C, Gorter A, Okal J, Bellows B.

Int J Equity Health. 2014 Apr 29;13:33. doi: 10.1186/1475-9276-13-33. Review. Erratum in: Int J Equity Health. 2015;14(1):20.


An assessment of opportunities and challenges for public sector involvement in the maternal health voucher program in Uganda.

Okal J, Kanya L, Obare F, Njuki R, Abuya T, Bange T, Warren C, Askew I, Bellows B.

Health Res Policy Syst. 2013 Oct 18;11:38. doi: 10.1186/1478-4505-11-38.


Community experiences and perceptions of reproductive health vouchers in Kenya.

Njuki R, Obare F, Warren C, Abuya T, Okal J, Mukuna W, Kanya L, Askew I, Bracke P, Bellows B.

BMC Public Health. 2013 Jul 16;13:660. doi: 10.1186/1471-2458-13-660.


Estimates of the size of key populations at risk for HIV infection: men who have sex with men, female sex workers and injecting drug users in Nairobi, Kenya.

Okal J, Geibel S, Muraguri N, Musyoki H, Tun W, Broz D, Kuria D, Kim A, Oluoch T, Raymond HF.

Sex Transm Infect. 2013 Aug;89(5):366-71. Review.


Emotional and psychosocial aspects of menstrual poverty in resource-poor settings: a qualitative study of the experiences of adolescent girls in an informal settlement in Nairobi.

Crichton J, Okal J, Kabiru CW, Zulu EM.

Health Care Women Int. 2013 Oct;34(10):891-916. doi: 10.1080/07399332.2012.740112. Epub 2013 Apr 9.


Effectiveness of a community-based positive prevention intervention for people living with HIV who are not receiving antiretroviral treatment: a prospective cohort study.

Sarna A, Luchters S, Musenge E, Okal J, Chersich M, Tun W, Mall S, Kingola N, Kalibala S.

Glob Health Sci Pract. 2013 Mar 21;1(1):52-67. doi: 10.9745/GHSP-D-12-00023. eCollection 2013 Mar.


A policy analysis of the implementation of a Reproductive Health Vouchers Program in Kenya.

Abuya T, Njuki R, Warren CE, Okal J, Obare F, Kanya L, Askew I, Bellows B.

BMC Public Health. 2012 Jul 23;12:540. doi: 10.1186/1471-2458-12-540. Review.


Exploring the effectiveness of the output-based aid voucher program to increase uptake of gender-based violence recovery services in Kenya: a qualitative evaluation.

Njuki R, Okal J, Warren CE, Obare F, Abuya T, Kanya L, Undie CC, Bellows B, Askew I.

BMC Public Health. 2012 Jun 12;12:426. doi: 10.1186/1471-2458-12-426.


Sexual behavior of HIV-positive adults not accessing HIV treatment in Mombasa, Kenya: Defining their prevention needs.

Sarna A, Luchters S, Pickett M, Chersich M, Okal J, Geibel S, Kingola N, Temmerman M.

AIDS Res Ther. 2012 Mar 19;9:9. doi: 10.1186/1742-6405-9-9.


Contraceptive needs of female sex workers in Kenya - a cross-sectional study.

Sutherland EG, Alaii J, Tsui S, Luchters S, Okal J, King'ola N, Temmerman M, Janowitz B.

Eur J Contracept Reprod Health Care. 2011 Jun;16(3):173-82. doi: 10.3109/13625187.2011.564683. Epub 2011 Mar 17.


Sexual and physical violence against female sex workers in Kenya: a qualitative enquiry.

Okal J, Chersich MF, Tsui S, Sutherland E, Temmerman M, Luchters S.

AIDS Care. 2011 May;23(5):612-8. doi: 10.1080/09540121.2010.525605.


Changes in sexual risk taking with antiretroviral treatment: influence of context and gender norms in Mombasa, Kenya.

Sarna A, Chersich M, Okal J, Luchters SM, Mandaliya KN, Rutenberg N, Temmerman M.

Cult Health Sex. 2009 Nov;11(8):783-97. doi: 10.1080/13691050903033423.


Social context, sexual risk perceptions and stigma: HIV vulnerability among male sex workers in Mombasa, Kenya.

Okal J, Luchters S, Geibel S, Chersich MF, Lango D, Temmerman M.

Cult Health Sex. 2009 Nov;11(8):811-26. doi: 10.1080/13691050902906488.

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