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Table 3 Unadjusted and adjusted analysis of factors associated with HIV infection

From: Migrant female sex workers working at the Sino-Vietnamese border for a short time have a higher risk of HIV transmission: a consecutive cross-sectional study

Independent variablesHIV infection (N = 22, %)OR (95% CI)P valueAdjusted OR (95% CI)P value
Types of working venues
 Low-level22 (100.0)Referent Referent 
 Medium-level0 (0.0)NA0.991NA0.990
 High-level0 (0.0)NA0.997NA0.997
 Current age (years)22 (100.0)1.03 (0.98, 1.08)0.2011.01 (0.94, 1.09)0.760
Marital status
 Unmarried/divorced/widowed7 (31.8)Referent Referent 
 Married/cohabiting15 (68.2)0.80 (0.33, 1.99)0.6370.60 (0.21, 1.71)0.337
Nationality
 Chinese2 (9.1)Referent Referent 
 Vietnamese20 (90.9)16.28 (3.79, 69.88)< 0.0016.70 (1.16, 38.77)0.034
Years of education
 ≤ 921 (95.5)Referent Referent 
 > 91 (4.5)0.41 (0.06, 3.05)0.3821.72 (0.18, 16.70)0.639
Total duration of sex work (months)22 (100.0)1.00 (0.99, 1.01)0.3941.01 (0.99, 1.02)0.189
Age when they first engaged in commercial sex work (years)
 < 181 (4.5)Referent Referent 
 ≥ 1821 (95.5)0.54 (1.86, 4.08)0.5480.03 (0.01, 0.57)0.020
Average charge per sex transaction (RMB)22 (100.0)0.96 (0.95, 0.98)< 0.0010.97 (0.95, 0.99)0.017
Length of sex work in current location (months)
 ≥ 614 (63.6)Referent Referent 
 < 68 (36.4)1.06 (0.44, 2.53)0.9050.67 (0.21, 2.11)0.491
The level of HIV-related knowledge
 High-level16 (92.7)Referent Referent 
 Low-level6 (27.3)5.61 (2.15, 14.65)< 0.0011.27 (0.38, 4.28)0.704
Consistent condom use in past month
 Yes14 (63.6)Referent Referent 
 No8 (36.4)4.43 (1.83, 10.70)0.0011.52 (0.50, 4.66)0.465
The number of male clients in the past month
 ≤ 304 (18.2)Referent Referent 
 > 3018 (81.8)3.48 (1.17, 10.32)0.0251.21 (0.35, 4.18)0.760
Had regular male clients in the past month
 Yes9 (40.9)Referent Referent 
 No13 (59.1)2.63 (1.12, 6.19)0.0273.26 (1.14, 9.29)0.027
Had a history of male clients used aphrodisiacs
 No18 (81.8)Referent Referent 
 Yes4 (18.2)3.13 (1.04, 9.41)0.0422.51 (1.59, 3.94)0.503
Lifetime illicit drug use
 Yes0 (0.0)Referent Referent 
 No22 (100.0)NA1.000NA1.000
Received free condoms distribution and education/HIV counselling and testing program in the past year
 Yes20 (90.9)Referent Referent 
 No2 (9.1)2.84 (0.65, 12.44)0.1671.66 (0.27, 10.04)0.581
Participated in peer education in the past year
 No12 (54.5)Referent Referent 
 Yes10 (45.5)0.47 (0.20, 1.09)0.0780.33 (0.11, 10.04)0.058
  1. NA not applicable