HIV and syphilis prevalence trends among men who have sex with men in Guangxi, China: yearly cross-sectional surveys, 2008–2012

Table 5 Logistic regression of syphilis infection among men who have sex with men in Guangxi (surveys from all 5 years, 2008–2012)

		Infection	Adjusted Odds
Variable	N	n(%)	Ratio OR (95% CI)	P-value
Age				<0.001
≤25	2421	112(4.6%)	1
>25	3948	326(8.3%)	1.83(1.42,2.36)
Registered Guangxi resident				0.04
No	808	69(8.5%)	1
Yes	5558	369(6.6%)	0.73(0.54,0.98)
Used condom with male in the past 6 months				0.008
No	4431	323(7.3%)	1
Yes	407	15(3.7%)	0.49(0.29,0.83)
Had sex with female in the past six months				0.01
No	4966	357(7.2%)	1
Yes	1378	80(5.8%)	0.69(0.52,0.92)

Note: Variables of age, registered Guangxi resident, used condom in the last male-male sex, used condom with male in the past 6 months, had sex with female in the past six months, and syphilis infection by year were included in the multivariate model.

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