Early Sexual Debut and HIV Infection among Men Who Have Sex with Men in Shenzhen, China

Table 2

Age (mean ± SD) at first sexual intercourse by sociodemographic characteristics.

Variables	Category	Age at first vaginal sexual intercourse	Age at first anal sexual intercourse	Age at first sexual intercourse
Present age
	<25
	≥25
Ethnicity
	Han
	Minority
Marital status
	Married			20.88± 3.95
	Never married/divorced/widowed
Educational level
	≤junior middle school
	>junior middle school
Socioeconomic disconnection
	Yes
	No
Monthly income (RMB)
	<2500
	≥2500
Length of stay in Shenzhen
	<1 month
	≥1 month

Analysis of -test, .