Age (years)
|
18–25
|
Ref
|
–
|
Ref
|
–
|
26–29
|
0.35(0.17–0.72)
|
0.005
|
0.45(0.19–1.05)
|
0.064
|
30–34
|
0.48(0.24–0.97)
|
0.041
|
0.81(0.26–2.53)
|
0.721
|
≥ 35
|
1.47(0.83–2.61)
|
0.185
|
1.70(0.56–5.10)
|
0.347
|
Ethnicity
|
Han
|
Ref
|
–
|
Ref
|
–
|
Non-Han
|
2.39(1.37–4.15)
|
0.002
|
2.09(1.15–3.81)
|
0.016
|
Marital status
|
Not married
|
Ref
|
–
|
Ref
|
–
|
Married
|
0.76(0.46–1.25)
|
0.284
|
0.65(0.25–1.69)
|
0.379
|
Divorced or widowed
|
2.74(1.45–5.19)
|
0.002
|
1.53(0.51–4.60)
|
0.450
|
Education level
|
Illiterate or elementary school
|
Ref
|
–
|
Ref
|
–
|
Junior high school
|
0.81(0.50–1.30)
|
0.382
|
1.15(0.69–1.92)
|
0.586
|
High school and above
|
0.80(0.34–1.90)
|
0.613
|
1.20(0.47–3.06)
|
0.699
|
Monthly income (USD)
|
< $500
|
Ref
|
–
|
Ref
|
–
|
$500–$1000
|
0.51(0.32–0.83)
|
0.006
|
0.57(0.34–0.96)
|
0.033
|
> $1000
|
0.56(0.29–1.05)
|
0.070
|
0.47(0.24–0.93)
|
0.031
|
Household registration
|
Local city
|
Ref
|
–
|
Ref
|
–
|
Other cities in this province
|
0.69(0.31–1.54)
|
0.367
|
0.69(0.30–1.60)
|
0.384
|
Other provinces
|
0.48(0.24–0.96)
|
0.037
|
0.49(0.24–1.02)
|
0.056
|
Length of time working in current location
|
1 year and above
|
Ref
|
–
|
Ref
|
–
|
6–12 months
|
0.51(0.29–0.91)
|
0.022
|
0.60(0.33–1.10)
|
0.098
|
< 6 months
|
0.10(0.02–0.41)
|
0.001
|
0.13(0.03–0.56)
|
0.006
|
Workplace
|
Middle-level venue
|
Ref
|
–
|
Ref
|
–
|
Low-level venue
|
2.78(1.01 ~ 7.70)
|
0.049
|
1.95(0.68 ~ 5.59)
|
0.216
|
Average number of clients in the past month (continue variable)
|
|
1.02(1.00 ~ 1.04)
|
0.043
|
1.02(1.00 ~ 1.04)
|
0.045
|
Consistent condom uses with clients in the past month
|
No
|
Ref
|
–
|
Ref
|
–
|
Yes
|
1.01(0.64 ~ 1.59)
|
0.969
|
1.15(0.69 ~ 1.92)
|
0.583
|
Providing anal sex for clients
|
No
|
Ref
|
–
|
Ref
|
–
|
Yes
|
2.44(1.55 ~ 3.85)
|
0.001
|
1.82(1.11 ~ 2.96)
|
0.017
|
Regular partner (boyfriend or husband)
|
No
|
Ref
|
–
|
Ref
|
–
|
Yes
|
1.50(0.86 ~ 2.62)
|
0.155
|
2.59(1.35 ~ 4.99)
|
0.004
|
STD symptoms in the past 12 months
|
No
|
Ref
|
–
|
Ref
|
–
|
Yes
|
4.03(2.58 ~ 6.29)
|
< 0.001
|
3.33(2.03 ~ 5.46)
|
< 0.001
|
HIV testing in the past 12 months
|
No
|
Ref
|
–
|
Ref
|
–
|
Yes
|
5.32(3.57 ~ 7.92)
|
< 0.001
|
3.94(2.34 ~ 6.65)
|
< 0.001
|
Syphilis testing in the past 12 months
|
No
|
Ref
|
–
|
Ref
|
–
|
Yes
|
6.82(4.5 ~ 10.33)
|
< 0.001
|
3.27(1.96 ~ 5.46)
|
< 0.001
|
Smoke in the past 12 months
|
No
|
Ref
|
–
|
Ref
|
–
|
Yes
|
0.87(0.49–1.55)
|
0.646
|
0.91(0.50–1.66)
|
0.761
|
Sexual abuse in the past 12 months
|
No
|
Ref
|
–
|
Ref
|
–
|
Yes
|
8.64(5.53–13.49)
|
< 0.001
|
2.01(1.08–3.72)
|
0.028
|