A behavioral sub-study of VOICE that aimed to understand women’s actual and reported use of study products and sexual behavior during their participation in VOICE. Stage 1 involved 88 women who took part in individual in-depth interviews after exiting VOICE and before the trial’s results were publicly reported. Stage 2 was implemented in response to VOICE results and involved 127 former participants who took part in in-depth interviews and/or focus group discussions after learning the results of blood tests indicating their actual patterns of product use during the trial. The researchers hoped that sharing individual test results would elicit candid discussion about the challenges women experienced in using the products. The most common themes that emerged were fears about the products and their side effects, which were primarily fueled by other participants, relatives and community members’ negative attitudes about the products. Other findings indicated there was widespread misunderstanding and misinterpretation of questions participants were asked about the practice of anal sex.