App Use Frequency And Condomless Anal Intercourse Among Men Who Have Sex With Men In Beijing, China: A Cross-Sectional Study

Gay dating applications (apps) are popular among men who have sex with men (MSM) in China. This study examined the relationship between gay dating app use frequency and condomless anal intercourse (CAI) in a sample of MSM in Beijing. In October 2017, a web-based, cross-sectional survey was conducted among MSM from Beijing, China. Demographics, frequency of app use, and sexual behaviors were collected and analyzed. Multivariable logistic regression and restricted cubic splines were used to evaluate the association between app use frequency and CAI. Of the 9280 participants, the proportion of CAI within one month prior to the survey was 43.3%, and 43.7% logged onto the app >= 11 times per week. In adjusted logistic regression analysis, logging onto the app 6-10 times per week and >= 11 times per week were inversely associated with CAI (adjusted odds ratio [AOR] =0.88 [95%CI, 0.78-0.99]; AOR = 0.88 [95%CI, 0.82-0.97], respectively). Among those 40 years of age or older, logging onto the app >= 11 times per week was associated with lower rates of CAI (AOR = 0.57 [95%CI, 0.40-0.81]). Results indicate that frequent app use was associated with lower odds of CAI among MSM in Beijing, China. Innovative interventions, which take advantage of this popular media platform, should be developed as such apps have been found to reduce the odds of CAI in Beijing.