Abstract
BackgroundWe evaluated the cost-effectiveness of the WINGS project, an intervention to prevent HIV and other sexually transmitted diseases among urban women at high risk for sexual acquisition of HIV.MethodsWe used standard methods of cost-effectiveness analysis. We conducted a retrospective analysis of the intervention's cost and we used a simplified model of HIV transmission to estimate the number of HIV infections averted by the intervention. We calculated cost-effectiveness ratios for the complete intervention and for the condom use skills component of the intervention.ResultsUnder base case assumptions, the intervention prevented an estimated 0.2195 new cases of HIV at a cost of $215,690 per case of HIV averted. When indirect costs of HIV were excluded from the analysis, the intervention's cost-effectiveness ratios were $357,690 per case of HIV averted and $31,851 per quality-adjusted life year (QALY) saved. Under base case assumptions, the condom use skills component of the intervention prevented an estimated 0.1756 HIV infections and was cost-saving. When indirect HIV costs were excluded, the cost-effectiveness ratios for the condom use skills component of the intervention were $97,404 per case of HIV averted and $8,674 per QALY saved.ConclusionsThe WINGS intervention, particularly the two sessions of the intervention which focussed on condom use skills, could be cost-effective in preventing HIV among women.
Highlights
We evaluated the cost-effectiveness of the Women in Group Support (WINGS) project, an intervention to prevent HIV and other sexually transmitted diseases among urban women at high risk for sexual acquisition of HIV
HIV infection among women in the United States has increased significantly over the last fifteen years, and recent estimates suggest that as many as 160,000 adult and adolescent women are living with HIV infection and/or AIDS [1]
HIV prevention interventions can reduce risky sexual behaviour of women [2], and numerous studies have documented the effectiveness of various cognitive-behavioural
Summary
We evaluated the cost-effectiveness of the WINGS project, an intervention to prevent HIV and other sexually transmitted diseases among urban women at high risk for sexual acquisition of HIV. HIV infection among women in the United States has increased significantly over the last fifteen years, and recent estimates suggest that as many as 160,000 adult and adolescent women are living with HIV infection and/or AIDS [1]. Women accounted for almost one fourth of the new AIDS cases reported in 1999, and most of these women were infected with HIV through heterosexual contact. HIV prevention interventions can reduce risky sexual behaviour of women [2], and numerous studies have documented the effectiveness of various cognitive-behavioural (page number not for citation purposes).
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