The epidemic of sexually transmitted infections in China: implications for control and future perspectives

Table 1 Incidence density of syphilis infection among MSM and FSWs - results from cohort studies ^a

Study	Study year	Study location	Sample size	Incidence density per 100 person- years (95% CI)^b	Risk factors
Men who have sex with men
Li SM, et al. [12]	2008	Beijing	525	9.3 (5.9 to 12.8)	Sourcing male sex partners in parks, public washrooms or bathhouses Performing rectal douching after homosexual anal intercourse
Hao C, et al. [14]	2011^c	Nanjing	348	7.6 (2.6 to 12.5)	Sourcing male sex partners mostly from gay saunas High monthly income; Self-identification of homosexual orientation
Li D et al. [15]	2006 to 2007	Beijing	507	16.9 (12.4 to 21.3)	Sourcing male sex partners in bathhouses/public washrooms/parks Having less education Drinking alcohol four or more times monthly
Xu JJ et al. [16]	2006	Shenyang	218	38.5 (27.7 to 50.2)	Being married Having more than five male sexual partners within the past 12 months
Zhang M et al. [13]	2007	Shenyang	229	21.6 (14.4 to 30.4)	No data available
	2008		598	26.0 (21.9 to 30.9)
	2009		455	29.8 (21.8 to 38.7)
Female sex workers
Wang HB et al. [17]	2006 to 2007	Kiayuan	492	1.1	Being elder Having less education Having more clients Inconsistent use of a condom
Tian LG et al. [18]⁶	2004 to 2005	Xichang	343	6.2	No data available.

^a FSWs, female sex workers; MSM, men who have sex with men
^b CI, confidence interval.
^c This is year the study was reported as the study year was not reported in the paper.

ISSN: 1741-7015