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. 2017 Feb 3;12(2):e0170635. doi: 10.1371/journal.pone.0170635

Table 2. Logistic regression analyses of related factors associated with STI-HIV co-infection among MSM in Jiangsu.

Variable STI-HIV co-infection rate, (N = 357), n (%) STI-HIV co-infection rate on ART, (N = 34), n (%) STI-HIV co-infection rate on ART-naïve (N = 323), n (%)
n/N (%) OR (95% CI) p-value n/N (%) OR (95% CI) p-value n/N (%) OR (95% CI) p-value
Age at diagnosis, years; Mean (SD) 31.14±10.05 0.99 (0.97–1.01) 0.263 32.18±10.77 0.91 (0.78–1.06) 0.231 31.03±9.98 0.98 (0.96–0.99) 0.010
 <30+ 43/198 (21.72) ref 5/16 (31.25) ref 38/182 (20.88) ref
 ≥30 41/159 (25.79) 1.28 (0.71–2.31) 0.412 4/18 (22.22) 1.06 (0.13–8.71) 0.956 37/141 (26.24) 1.34 (0.71–2.50) 0.365
Duration on diease++, years
 <1.8 61/225 (27.11) ref 6/16 (37.50) ref 55/209 (26.32) ref
 ≥1.8 23/132 (17.42) 0.55 (0.32–0.96) 0.036 3/18 (16.67) 0.28 (0.03–2.86) 0.283 20/114 (17.54) 0.46 (0.26–0.83) 0.010
Marriage Status
 Non-married 61/265 (23.02) ref 7/24 (29.17) ref 54/241 (22.41) ref
 Married 23/92 (25.00) 1.20 (0.63–2.28) 0.588 2/10 (20.00) 1.25 (0.08–20.39) 0.874 21/82 (25.61) 1.40 (0.72–2.72) 0.325
Education
 Primary or junior school 23/102 (22.55) 0.84 (0.43–1.66) 0.621 1/12 (8.33) 0.10 (0.00–2.20) 0.144 22/90 (24.44) 0.99 (0.50–1.97) 0.054
 High school 27/116 (23.28) 0.84 (0.45–1.56) 0.583 3/10 (30.00) 0.37 (0.03–4.62) 0.441 24/106 (22.64) 0.77 (0.41–1.44) 0.631
 College or above 34/139 (23.46) ref 5/12 (41.67) ref 29/127 (22.83) ref
Occupation
 Workers and farmers 27/123 (21.95) ref 3/12 (25.00) ref 24/111 (21.62) ref
 Students 4/20 (20.00) 0.70 (0.20–2.49) 0.581 0/2 (0.00) NA NA 4/18 (22.22) 0.52 (0.16–1.71) 0.281
 Civil servants* 4/27 (14.81) 0.56 (0.17–1.86) 0.347 0/1 (0.00) NA NA 4/26 (15.38) 0.49 (0.15–1.59) 0.238
 Service industry** 26/104 (25.00) 1.07 (0.61–1.89) 0.817 6/17 (35.29) 1.49 (0.13–16.66) 0.747 20/87 (22.99) 0.80 (0.46–1.37) 0.413
 Others*** 23/83 (27.71) 1.04 (0.38–2.91) 0.938 0/2 (0.00) NA NA 23/81 (28.40) 1.08 (0.38–3.09) 0.879
Drug resistance
 Yes 6/14 (42.86) 2.69 (0.86–8.40) 0.089 1/3 (33.33) 2.09 (0.09–47.03) 0.644 5/11 (45.45) 3.84 (1.05–14.03) 0.042
 No 78/343 (22.74) ref 8/31 (25.81) ref 70/312 (22.44) ref

+ The median of age;

++ Estimated as the period since the first seropositive HIV-1 antibody test date;

* Carders and staffs serving for governments, enterprises, school and hospital;

** People serving for commercial, catering and hair salon;

*** The unemployed, retirees and unclear