A randomized control trial evaluating the educational effectiveness of a rapid HIV posttest counseling video

Many of the individuals most at risk for HIV infection (i.e., minority populations, women, adolescents) are also the most marginalized by our health care system. Lacking primary care providers, they rely on the Emergency Department (ED) for their health care needs and education. In this prospective randomized controlled trial, we compared the educational effectiveness of a 15-minute posttest counseling video with the normal practice of a session with an HIV counselor. The study population was composed of ambulatory patients recruited for rapid HIV testing in the ED.

The RAs (research assistants) recruited a convenience sample of stable patients presenting to the walk-in section of an inner-city adult ED for rapid HIV testing. Eligible patients for this study included patients who consented for the rapid HIV test and completed measures on condom intention and condom use self-efficacy. Before receiving their results, participants who consented to be in this study were randomized to either a 15-minute HIV posttest educational video available in English/Spanish or to a posttest educational session with an HIV counselor. Afterwards, both groups completed an assessment tool concerning HIV prevention and transmission.

Of the 128 participants, 61 and 67 patients were randomized to the video and counselor groups, respectively. The groups were similar with respect to gender, ethnicity and experience with prior HIV testing. Mean knowledge scores were higher in the video group (76.20% vs. 69.3%; 90% CI for the difference, 2.8, 11.2). As the lower bound of the CI for the difference was higher than the lower equivalence boundary (-5%), we infer that the video was at least as effective as the counselor educational session.

The use of an educational counseling video is a valid alternative for providing posttest education and prevention information during the waiting period associated with the 20-minute HIV rapid test. Without disruption in clinical flow, both testing and education can be accomplished in a meaningful way in a busy ED.