Previous studies have repeatedly found the association between network homogeneity based on native-place and sexual risk behaviors among migrants. However, it remains unclear why such a simple numerical property of network composition can be correlated with a sexual risk behavior. Using a dataset (n = 1591) with detailed information on the sexual behaviors among male migrant laborers in the two Chinese provinces with the highest migrant inflows, we confirmed network homogeneity is significantly associated with prostitution patronage. With structural equation modeling, we further found that half of network homogeneity’s impact on prostitution patronage is mediated by three factors: peer deviance, family bonds, and hedonistic subcultural beliefs. In addition, network homogeneity’s association with hedonistic subcultural beliefs is fully mediated by peer deviance. Although the nativity homogeneity in social networks is still associated with prostitution patronage, more proximate psycho-social factors are found responsible for the network effect. Health policies seeking to integrate migrant laborers, removing the policy barriers against family bonds, and providing alternative sources of social support are highly promising for reducing sexual risk behavior among this population. © 2018, The Author(s).

Migration Nativity Prostitution patronage Social network homogeneity Mediation analysis

sexual behavior health care policy human statistics and numerical data controlled study social aspect social network Health Surveys social support Risk Reduction Behavior Humans migrant psychology worker male prostitution Article major clinical study adult migration Social Networking structural equation modeling Sex Work Transients and Migrants risk reduction health survey