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Table 4 Factors associated with HSV-2 infection among 3389 Chinese MSM

From: Commercial sex and risk of HIV, syphilis, and herpes simplex virus-2 among men who have sex with men in six Chinese cities

Characteristic No. of MSM HSV-2 positive (%) Crude OR (95% CI) P-value AOR (95% CI) P-value
Commercial sex
 NC-MSM 380 (11.8) Ref. 0.20 Ref. 0.52
 MSM-buying 12 (14.1) 1.2 (0.7–2.3)   1.5 (0.7–2.9)  
 MSM-selling 17 (17.5) 1.6 (0.9–2.7)   1.2 (0.5–2.6)  
HIV positive
 No 88 (24.2) Ref. <0.001 Ref. <0.001
 Yes 321 (10.6) 2.7 (2.1–3.5)   2.3 ((1.8–3.1)  
Syphilis positive
 No 81 (28) Ref. <0.001 Ref. <0.001
 Yes 328 (10.6) 3.3 (2.5–4.4)   2.7 (2.0–3.7)  
Age (per year)   1.1 (1.0–1.1) <0.001 1.0 (1.0–1.1) <0.001
Married to a woman
 No 266 (10.4) Ref. <0.001 Ref. 0.61
 Yes 143 (17) 1.8 (1.4–2.2)   0.9 (0.7–1.2)  
Time living in the study city
 >6 months 333 (11.9) Ref. 0.88 _ _
 ≤6 months 32 (12.3) 1.0 (0.7–1.5)    
Student
 No 391 (13.6) Ref. <0.001 Ref. <0.001
 Yes 18 (3.5) 0.2 (0.1–0.4)   0.4 (0.2–0.7)  
Education
 College or above 194 (9.8) Ref. <0.001 Ref. 0.37
 High school or below 215 (15.3) 1.7 (1.4–2.1)   1.1 (0.9–1.4)  
Seeking partners online
 No 159 (15.8) Ref. <0.001 Ref. 0.28
 Yes 247 (10.4) 0.6 (0.5–0.8)   0.9 (0.7–1.1)  
Number of male sex partners in past 6 months
 0–2 236 (11.1) Ref. 0.12 Ref. 0.27
 3–9 129 (13.3) 1.2 (1.0–1.5)   1.2 (0.9–1.5)  
 ≥10 36 (14.2) 1.3 (0.9–1.9)   1.3 (0.8–1.9)  
Drug use in past 6 months
 No 278 (11.9) Ref. 0.88 Ref. 0.64
 Yes 93 (11.7) 1.0 (0.8–1.3)   1.1 (0.8–1.4)  
UAI in past 6 months
 No 154 (11.6) Ref. 0.54 Ref. 0.19
 Yes 255 (12.3) 1.1 (0.9–1.3)   0.9 (0.7–1.1)  
Predominant anal sex position
 Receptive 134 (11.6) Ref. 0.35 _ _
 Insertive 127 (11.6) 0.9 (0.7–1.1)