Investigating Social Network Peer Effects on HIV Care Engagement Using a Fuzzy-Like Matching Approach: Cross-Sectional Secondary Analysis of the N2 Cohort Study

Cho-Hee Shrader   ^{1, 2} , MPH, PhD ;   Dustin T Duncan   ¹ , MS, ScD ;   Redd Driver   ³ , PhD ;   Juan G Arroyo-Flores   ⁴ , PhD ;   Makella S Coudray   ⁵ , MPH, PhD ;   Raymond Moody   ⁶ , PhD ;   Yen-Tyng Chen   ⁷ , PhD ;   Britt Skaathun   ⁸ , PhD ;   Lindsay Young   ⁹ , PhD ;   Natascha del Vecchio   ¹⁰ , MS ;   Kayo Fujimoto   ¹¹ , PhD ;   Justin R Knox   ^{12, 13, 14} , MA, PhD ;   Mariano Kanamori   ¹⁵ , PhD ;   John A Schneider   ^{16, 17} , MPH, MD

¹ Department of Epidemiology, Columbia University, New York, NY, United States

² College of Nursing and Health Innovation, Arizona State University, Phoenix, AZ, United States

³ New York Department of Mental Health and Hygiene, New York, NY, United States

⁴ Fors Marsh, Arlington, VA, United States

⁵ Population Health Sciences, University of Central Florida, Orlando, FL, United States

⁶ University of Connecticut, Hartford, CT, United States

⁷ Edward J. Bloustein School of Planning and Public Policy, Rutgers University, New Brunswick, NJ, United States

⁸ School of Medicine, University of California San Diego, San Diego, CA, United States

⁹ School for Communication and Journalism, University of Southern California, Los Angeles, CA, United States

¹⁰ A Place for Rover, Seattle, WA, United States

¹¹ Center for Health Promotion and Prevention Research, School of Public Health, University of Texas Health Science Center at Houston, Houston, TX, United States

¹² Department of Psychiatry, Columbia University Irving Medical Center, Columbia University, New York, NY, United States

¹³ New York State Psychiatric Institute, HIV Center for Clinical and Behavioral Studies, New York, NY, United States

¹⁴ Department of Sociomedical Sciences, Columbia University, New York, NY, United States

¹⁵ Department of Public Health Sciences, School of Medicine, University of Miami, Miami, FL, United States

¹⁶ Department of Medicine, University of Chicago, Chicago, IL, United States

¹⁷ Department of Public Health Sciences, University of Chicago, Chicago, IL, United States