Table 4. Demographic and risk factors correlations of HIV or syphilis infection among female sex workers (FSW), Guangxi province, China, China National CDC HIV/AIDS Surveillance Data, 2010–2012.

FSWs	HIV*				Syphilis ¶				HCV#
Characteristic	univariate(P Value)	95%CI for OR	Multivariate(P value)	95%CI for AOR	univariate(P Value)	95%CI for OR	Multivariate(P value)	95%CI for AOR	univariate(P Value)	95%CI for OR	Multivariate(P value)	95%CI for AOR
Category
High tier		Ref.		Ref.		Ref.		Ref.		Ref.		Ref.
Mid tier	0.589	1.126 (0.731–1.736)	0.630	0.892(0.562–1.418)	0.000	1.446(1.228–1.702)	0.107	1.148(0.971–1.359)	0.069	1.416(0.973–2.062)	0.454	1.157(0.790–1.696)
Low tier	0.000	4.159(2.772–6.240)	0.002	2.024(1.290–3.176)	0.000	3.571(3.051–4.180)	0.000	2.002(1.694–2.366)	0.000	2.322(1.608–3.352)	0.024	1.558(1.061–2.288)
Age
<35		Ref.		Ref.		Ref.		Ref.		Ref.		Ref.
> = 35	0.000	3.364(2.834–3.992)	0.000	1.653(1.335–2.047)	0.000	2.873(2.675–3.087)	0.000	1.707(1.564–1.864)	0.000	1.470(1.209–1.787)	0.772	0.965(0.760–1.225)
Marital Status
Married/Cohabiting		Ref.		Ref.		Ref.		Ref.		Ref.		Ref.
Not married/	0.000	2.048(1.668–2.514)	0.919	1.013(0.787–1.304)	0.000	2.235(2.060–2.424)	0.000	1.275(1.157–1.405)	0.039	1.217(1.010–1.467)	0.748	0.964(0.773–1.203)
Divorced/ Widowed	0.000	4.936(3.565–6.834)	0.002	1.822(1.243–2.671)	0.000	2.970(2.522–3.497)	0.003	1.326(1.104–1.594)	0.000	2.269(1.574–3.272)	0.126	1.391(0.911–2.123)
Region of Birth
Guangxi		Ref.				Ref.		Ref.		Ref.
Other	0.360	1.096(0.901–1.334)	-	-	0.000	1.309(1.212–1.414)	0.012	1.111(1.023–1.206)	0.055	1.211(0.996–1.472)	_	_
Education Level
High school (12 years education) or above		Ref.		Ref.		Ref.		Ref.		Ref.
Junior school(9 years education)	0.004	2.040(1.255–3.316)	0.009	2.077(1.199–3.599)	0.000	1.792(1.526–2.105)	0.000	1.571(1.324–1.866)	0.279	1.183(0.872–1.605)	_	_
Elementary school (6 years education)or less	0.000	6.587(4.096–10.592)	0.000	3.708(2.138–6.432)	0.000	4.063(3.463–4.766)	0.000	2.349(1.973–2.796)	0.088	1.316(0.960–1.806)	_	_
Years living in current city for providing commercial sex service
0.5 year or less		Ref.		Ref.		Ref.		Ref.		Ref.		Ref.
0.5 to 1 years	0.056	0.774(0.595–1.007)	0.090	0.788(0.598–1.038)	0.694	0.980(0.884–1.086)	0.098	0.912(0.818–1.017)	0.308	1.143(0.884–1.479)	0.217	1.185(0.905–1.552)
1 year or more	0.002	1.345(1.113–1.625)	0.640	1.051(0.854–1.293)	0.000	1.551(1.434–1.677)	0.000	1.191(1.093–1.298)	0.000	1.657(1.355–2.027)	0.014	1.320(1.057–1.648)
Consistent Condom use in recent month
consistent use		Ref.		Ref.		Ref.		Ref.		Ref.
Not consistent use	0.000	2.131(1.795–2.531)	0.000	1.478(1.230–1.775)	0.000	1.449(1.350–1.556)	0.020	1.096(1.014–1.183)	0.132	1.151(0.958–1.382)	_	_
Ever inject drug
No		Ref.		Ref.		Ref.		Ref.		Ref.		Ref.
Yes	0.000	7.532(4.344–13.061)	0.039	2.095(1.038–4.229)	0.000	3.974(2.828–5.585)	0.179	1.332(0.877–2.024)	0.000	81.837(60.591–110.532)	0.000	60.654(43.424–84.721)
Diagnosed with an STI in the last 12 months
No		Ref.		Ref.		Ref.		Ref.		Ref.		Ref.
Yes	0.000	2.357(1.746–3.182)	0.041	1.402(1.015–1.939)	0.000	4.033(3.608–4.507)	0.000	3.558(3.150–4.018)	0.000	2.310(1.701–3.137)	0.334	1.189(0.837–1.690)
Syphilis(for HIV)/ HIV (for Syphilis and HCV)
Negative		Ref.		Ref.		Ref.		Ref.		Ref.		Ref.
Positive	0.000	4.965(4.070–6.057)	0.000	2.564(2.057–3.195)	0.000	4.965(4.070–6.057)	0.000	2.609(2.093–3.252)	0.000	7.532(5.284–10.736)	0.000	3.738(2.465–5.669)
HCV(for HIV and Syphilis)/Syphilis (for HCV)
Negative		Ref.		Ref.		Ref.		Ref.		Ref.		Ref.
Positive	0.000	7.532(5.284–10.736)	0.000	4.117(2.702–6.274)	0.000	5.514(4.533–6.707)	0.000	4.357(3.463–5.481)	0.000	5.514(4.533–6.707)	0.000	4.157(3.315–5.213)

Note: FSW = Female Sex Worker;

*Hosmer-Lemeshow goodness-of-fit for HIV multivariate analysis model is p = 0.216;

¶Hosmer-Lemeshow goodness-of-fit for syphilis multivariate analysis is p = 0.039;

#Hosmer-Lemeshow goodness-of-fit for HCV multivariate analysis is p = 0.148.