Multiple sex partners and perceived risk of HIV infection in Zambia: attitudinal determinants and gender differences.

While there is much attention on perceived risk of HIV and subsequent cautionary behavior, evidence of the reciprocity of the relationship between recent risky sexual behavior and perceived risks of HIV infection remains scarce. This paper tests the hypothesis that having multiple sex partners within the last 12 months influences individual's perceived risk of HIV among Zambian men and women. It also examines attitudinal factors associated with having multiple sex partners and perceived HIV risk. Data come from the 2005 Household and Community Surveys of the Health Communication Partnership project. The sample includes 2610 men and women, and 445 community leaders in 36 districts. Tests of exogeneity confirm that having multiple sex partners is exogenous to perceived risk of HIV infection. Structural equation modeling is employed to test the hypothesis. Findings show that having multiple partners is the strongest predictor of perceived risk of HIV. Men were also more likely than women to have multiple sex partners, but less likely to consider themselves at risk of HIV, compared to women. Men were also more likely to be influenced by their peers and community members. Women were more likely than men to report some risk of HIV if they were aware of their partner's serostatus and had more interpersonal communication on HIV. Married women were less likely to consider themselves at risk than unmarried women. The findings indicate that it is essential for men to recognize the connections between unsafe sex behaviors and risks of HIV infection and that distinct intervention approaches to Zambian men and women are needed. While couple communication needs to be enhanced for both, community-based interventions that approach men are particularly important.