A Machine Learning Model for Identifying Sexual Health Influencers to Promote the Secondary Distribution of HIV Self-Testing Among Gay, Bisexual, and Other Men Who Have Sex With Men in China: Quasi-Experimental Study

Yuxin Ni   ^{1, 2, 3 *} , MPH ;   Ying Lu   ^{2 *} , MA ;   Fengshi Jing   ^{4, 5 *} , PhD ;   Qianyun Wang   ^{2, 6 *} , MSW ;   Yewei Xie   ^{2, 7} , MS ;   Xi He   ⁸ , BS ;   Dan Wu   ⁹ , PhD ;   Rayner Kay Jin Tan   ^{2, 10} , PhD ;   Joseph D Tucker   ^{2, 11, 12} , MD, PhD ;   Xumeng Yan   ^{2, 13} , MA ;   Jason J Ong   ^{11, 14} , PhD ;   Qingpeng Zhang   ^{15, 16} , PhD ;   Hongbo Jiang   ¹⁷ , PhD ;   Wencan Dai   ¹⁸ , MPH ;   Liqun Huang   ¹⁸ , MPH ;   Wenhua Mei   ¹⁸ , PhD ;   Yi Zhou   ^{18 *} , PhD ;   Weiming Tang   ^{1, 2 *} , MD, PhD

¹ Dermatology Hospital of Southern Medical University, Guangzhou, China

² University of North Carolina at Chapel Hill Project-China, Guangzhou, China

³ Department of Health Law, Policy, and Management, Boston University School of Public Health, Boston, MA, United States

⁴ Institute for Healthcare Artificial Intelligence Application, Guangdong Second Provincial General Hospital, Guangzhou, China

⁵ Faculty of Data Science, City University of Macau, Macao SAR, China

⁶ Department of Social Welfare, University of California, Los Angeles, CA, United States

⁷ Health Service and System Research programme, Duke-NUS Medical School, Singapore, Singapore

⁸ Zhuhai Xutong Voluntary Services Center, Zhuhai, China

⁹ Department of Social Medicine and Health Education, School of Public Health, Nanjing Medical University, Nanjing, China

¹⁰ Saw Swee Hock School of Public Health, National University of Singapore and National University Health System, Singapore, Singapore

¹¹ Department of Clinical Research, Faculty of Infectious and Tropical Diseases, London School of Hygiene and Tropical Medicine, London, United Kingdom

¹² University of North Carolina at Chapel Hill, Chapel Hill, NC, United States

¹³ Department of Community Health Sciences, Fielding School of Public Health, University of California, Los Angeles, CA, United States

¹⁴ Central Clinical School, Monash University, Melbourne, Australia

¹⁵ Musketeers Foundation Institute of Data Science, The University of Hong Kong, Hong Kong, China (Hong Kong)

¹⁶ Department of Pharmacology and Pharmacy, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong, China (Hong Kong)

¹⁷ Department of Epidemiology and Biostatistics, School of Public Health, Guangdong Pharmaceutical University, Guangzhou, China

¹⁸ Zhuhai Center for Disease Control and Prevention, Zhuhai, China

*these authors contributed equally