Objective: To identify the unmet needs for HIV prevention among older adults in rural South
Africa. Methods: We analyzed data from a population-based sample of 5059 men and …

Factorial survey designs have gained increasing popularity within the social sciences.
Compared to single-item questions, the method allows the researcher to model more …

Objective: Adolescent girls and young women (AGYW) have a much higher risk of HIV
infection than young men of the same age. One hypothesis for this disparity is AGYW are …

There is limited information about sexual behavior among older Africans, which is
problematic given high HIV rates among older adults. We use a population-based survey …

South Africa has the highest number of people living with HIV in the world (over 6 million) as
well as a rapidly aging population, with 15% of the population aged 50 and over. High HIV …

Despite a general understanding that interviewers might cause measurement errors on
sensitive questions in sample surveys, there is relatively little research on interviewer effects …

Nesting qualitative data collection methods within quantitative studies improves results by
assessing validity and providing depth and context. Using data from 3 sources from …

Why do some people adapt successfully to change while others do not? We examine this
question in the context of a severe HIV/AIDS epidemic in South Africa, where adapting (or …

Objective: The African HIV epidemic is aging, yet HIV testing behavior studies either exclude
older persons or include too few to say much about age differences. Method: Strategically …

Background: Response differences to survey questions are known to exist for different
modes of questionnaire completion. Previous research has shown that response differences …