Additional file 1: Table S1. of Condom use peer norms and self-efficacy as mediators between community engagement and condom use among Chinese men who have sex with men LiHaochu XueLi TuckerJoseph WeiChongyi DurvasulaMaya HuWenqi KangDianming LiaoMeizhen TangWeiming MaWei 2017 Eight items of HIV/ sexual health community engagement among high-risk MSM in China, 2015 (n = 1042). Table S2. Six items of condom use peer norm among high-risk MSM in China, 2015 (n = 1042). Table S3. Seven items of condom use self-efficacy among high-risk MSM in China, 2015 (n = 1042). Table S4 Descriptive cross-table for sociodemographic variables, community engagement, peer norms, self-efficacy, and condom use (DOCX 20 kb)