Table 2

Multivariate analyses of participant characteristics associated with incident HIV infection among migrant MSM in Beijing

Factors	No. of HIV seroconversions	Cumulative PY	HIV incidence (/100 PY)	Univariate		Multivariate
Factors	No. of HIV seroconversions	Cumulative PY	HIV incidence (/100 PY)	HR (95% CI)	p Value	Adjusted HR (95% CI)	p Value
Total	16	204.27	7.83
Education
Junior college and below	13	143.95	9.03	1.00
Above junior college	3	60.32	4.97	0.56 (0.16 to 1.98)	0.370
Seeking partner through internet
No	12	109.45	10.96	1.00
Yes	4	94.81	4.22	0.39 (0.12 to 1.20)	0.100
Age of first anal intercourse (median, years)
≥15	14	200.99	6.97	1.00		1.00
<15	2	3.28	60.98	8.28 (1.88 to 36.46)	0.005	9.20 (1.94 to 43.56)	0.005
Ever had group sex
No	11	183.48	6	1.00		1.00
Yes	5	20.78	24.06	3.95 (1.37 to 11.38)	0.011	4.30 (1.40 to 13.18)	0.011
Knowledge of HIV/AIDS was acquired from
Media
No	12	109.65	10.94	1.00
Yes	4	94.62	4.23	0.39 (0.12 to 1.20)	0.100
Internet
No	6	108.59	5.53	1.00
Yes	10	95.68	10.45	0.38 (0.12 to 1.19)	0.097
Consistent condom use during oral sex with regular partners since last investigation
No	1	9.45		1.00
Yes	15	194.82		0.73 (0.10 to 5.50)	0.758
Consistent condom use during oral sex with casual partners since last investigation
No	0	7.70	0	1.00
Yes	9	128.67	6.99	–	–
Consistent condom use during anal sex with regular partners since last investigation
No	3	29.18	10.28	1.00
Yes	13	175.09	7.42	0.72 (0.21 to 2.53)	0.609
Consistent condom use during anal sex with casual partners since last investigation
No	2	27.56	7.26	1.00
Yes	10	115.99	8.62	1.19 (0.26 to 5.42)	0.825