Table 3

Analysis of risk factors by multiple logistic regression on any prevalent bacterial STD (chlamydia, gonorrhoea, syphilis) (n=384)*

Risk factorNo (%) positive in categoryUnadjusted odds ratio95% CIAdjusted odds ratio†95% CI
*Missing 3 cases because of loss of specimens in laboratory and 1 case to non-response on questionnaire item.
†Adjusted for all variables in the model.
**p<0.05.
Age (years)
    15–20 3 (3%)1.01.0
    21–2610 (9%)3.080.82 to 11.521.680.39 to 7.26
    27–32 7 (8%)2.660.67 to 10.620.830.14 to 4.99
    33+10 (13%)4.761.26 to 17.921.340.21 to 8.63
Marital status
    Currently unmarried12 (6%)1.01.0
    Currently married18 (10%)1.830.86 to 3.911.670.54 to 3.01
Job
    Interdistrict driver15 (10%)1.01.0
    Local driver 9 (9%)0.870.37 to 2.081.140.43 to 3.01
    Interdistrict helper 2 (4%)0.340.07 to 1.530.450.08 to 2.50
    Local helper 4 (4%)0.400.13 to 1.250.910.24 to 3.53
Years in job
    1–2 6 (4%)1.01.0
    3–4 7 (8%)2.020.66 to 6.222.010.59 to 6.88
    5+17 (12%)3.071.18 to 8.032.490.71 to 8.75
Sex with a CSW in the past year
    No 6 (3%)1.01.0
    Yes24 (12%)3.68**1.47 to 9.213.54**1.29 to 9.72
Number of male sexual partners in past year
    None27 (8%)1.01.0
    One or more 3 (11%)1.680.47 to 5.981.830.45 to 7.57
Condom use
    Once or never23 (8%)1.01.0
    Occasionally/most of time 7 (8%)1.080.45 to 2.610.610.23 to 1.61
Number of times diagnosed with an STD
    Never15 (6%)1.01.0
    Once 7 (10%)1.730.67 to 4.411.160.42 to 3.21
    Two or more times 6 (13%)2.270.83 to 6.201.640.55 to 4.88
    Does not know number 2 (11%)1.830.39 to 8.661.450.27 to 7.86
Sometimes drink alcohol
    No21 (7%)1.01.0
    Yes 9 (10%)1.400.62 to 3.180.940.34 to 2.58
Sometimes take drugs for recreation
    No18 (8%)1.01.0
    Yes12 (8%)0.950.45 to 2.040.660.27 to 1.65
Ever exposure to HSV-2
    No19 (7%)1.01.0
    Yes11 (11%)1.730.79 to 3.781.880.80 to 4.43