Table 2. Sociodemographic characteristics associated with HIV incidence of YMSM cohort participants.

Factors	Incidence of HIV in one year
	No. of seroconversionsat 6-month follow-up	No. of seroconversionsat 12-month follow-up	No. of seroconversionsin one year	Person-year		Incidence rate (/100 PY)
Education
Junior high school or less	3	5	8	127.18		6.4
Senior high school	13	15	28	321.81		8.7
Some college or higher	23	19	42	719.41		5.8
Student
Yes	12	5	17	400.98		4.2
No	27	34	61	767.42		7.9
Age
18∼20	13	12	25	310.61		8.0
21∼25	26	27	53	857.79		6.2
Local resident
Yes	19	15	34	534.68		6.4
No	20	24	44	633.72		6.9
Homosexual
Yes	24	24	48	777.84		6.2
No	15	15	30	390.56		7.7
Total	39	39	78	1168.40		6.7