Sunset Without AIDS: protocol for a randomized controlled trial of a brief video-based intervention to improve the ability of AIDS prevention in elderly men.

<bold>Background: </bold>Although progress has been made in the prevention and treatment of HIV in China, there are still a considerable number of new infections annually, especially in older men. HIV health education for older men is urgently needed. Evidence-based, acceptable, and scalable interventions are urgently needed to increase their capacity to prevent HIV. We describe a trial protocol to evaluate the effectiveness of a brief video-based intervention targeting older men's knowledge of HIV prevention.<bold>Design: </bold>This study is a randomized controlled trial. The trial will be held in the residents' activity centers of three communities.<bold>Methods: </bold>A total of 450 older men will be randomly divided into three groups (Sunset Without AIDS intervention group and two control groups) for 2 weeks. We will assess the feasibility and acceptability of intervention through interviews. The primary outcome includes changes in participants' knowledge related to AIDS after 2 weeks intervention and 1, 3, and 6 months of follow-up. The secondary outcomes, e.g., changes in participants' stigma attitude, risk behaviors attitude, and risk behaviors related to AIDS, will be respectively assessed 2 weeks, 1 month, 3 months, and 6 months after the second intervention.<bold>Discussion: </bold>Sunset Without AIDS may be an innovative way to help older men improve HIV prevention knowledge, fill the gap in video-based HIV prevention education for the older men in China, and gain experience of HIV education. This project will innovate the HIV education ideas of older men and enrich the theoretical research content of AIDS-related education of older men. The findings may also provide the basis for the research and formulation of more reasonable AIDS education strategies, prevention, and control policies for the elderly.<bold>Trial Registration: </bold>Chinese Clinical Trial Registry ChiCTR2100045708 . Registered on 23 April 2021. [ABSTRACT FROM AUTHOR]