Psychosocial factors in association with condom use during commercial sex among migrant male sex workers living in Shenzhen, mainland China who serve cross-border Hong Kong male clients.

Male sex workers serving Hong Kong male clients in Shenzhen were surveyed (n = 199); 98.9% had been in Shenzhen for < or =3 years; 83.4% served local male clients; 82.8% had no family members/relatives in Shenzhen; 58.3% depended exclusively on sex work; 73% were bothered by one's sex work; and 81.7% found financial support unavailable when needed. About 29.1% had had unprotected anal intercourse (UAI) with Hong Kong male clients in the last month. UAI behavior was associated with exposure to HIV prevention services (OR = 0.08) and poor social support, being bothered by the sex work, substance use, and type of sex work venue (OR = 2.92-5.96).