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Antiretroviral Therapy and Demand for HIV Testing: Evidence from Zambia

This paper examines the effects of antiretroviral therapy (ART) on demand for HIV testing and of ART-induced testing on demand for risky sexual behavior. I provide a model of sexual behavior decision-making under uncertainty and estimate the structural parameters of the model using nationally representative survey data from Zambia on HIV testing decisions before and after the introduction of ART. The empirical results indicate that although the introduction of ART increased demand for HIV testing, the ART allocation process limited the prevention benefit of ART-induced testing. Simulation results show that eliminating this prevention inefficiency while holding the supply of ART constant would increase the prevention impact of ART-induced testing more than four-fold. More generally, the analysis indicates that existing studies which examine "universal" testing or quasi-experimental testing programs understate the efficacy of standard voluntary counseling and testing programs.

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File URL: http://web.williams.edu/Economics/wp/Wilson_HIV_Testing.pdf
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Paper provided by Department of Economics, Williams College in its series Department of Economics Working Papers with number 2010-23.

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Length: 48 pages
Date of creation: Oct 2010
Date of revision:
Handle: RePEc:wil:wileco:2010-23
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  1. Robinson, Jonathan & Yeh, Ethan, 2008. "Transactional Sex as a Response to Risk in Western Keny," MPRA Paper 7350, University Library of Munich, Germany.
  2. Juhn, Chinhui & Kalemli-Ozcan, Sebnem & Turan, Belgi, 2009. "HIV and Fertility in Africa: First Evidence from Population Based Surveys," IZA Discussion Papers 4473, Institute for the Study of Labor (IZA).
  3. Emily Oster, 2007. "HIV and Sexual Behavior Change: Why Not Africa?," NBER Working Papers 13049, National Bureau of Economic Research, Inc.
  4. Emily Oster, 2007. "Routes of Infection: Exports and HIV Incidence in Sub-Saharan Africa," NBER Working Papers 13610, National Bureau of Economic Research, Inc.
  5. Paul Gertler & Manisha Shah & Stefano M. Bertozzi, 2005. "Risky Business: The Market for Unprotected Commercial Sex," Journal of Political Economy, University of Chicago Press, vol. 113(3), pages 518-550, June.
  6. Lena Edlund & Evelyn Korn, 2002. "A Theory of Prostitution," Journal of Political Economy, University of Chicago Press, vol. 110(1), pages 181-214, February.
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