Table 2

 Crude and adjusted odds ratios for HIV infection in 3689 women under 25

Explanatory variablesCrudeAdjusted
OR95% CIp ValueOR95% CIp Value
*Continuous variables.
Individual level
Residence
    Current urban (1550)1.591.15 to 2.190.0081.180.69 to 2.020.532
    Past urban (1106)1.771.39 to 2.250.0001.441.12 to 1.870.006
    Resident less than 1 year (1405)1.130.85 to 1.520.3731.110.82 to 1.490.476
Marriage
    Never married (899)1.371.01 to 1.890.850.61 to 1.26
    Currently married (2728)10.1150.743
    Formerly married (62)1.230.46 to 3.271.090.41 to 2.94
Education
    None (548)11
    Incomplete primary (768)1.460.86 to 2.500.1041.490.86 to 2.610.288
    Complete primary (2194)1.320.93 to 1.861.300.88 to 1.92
    Some secondary (179)2.001.05 to 3.791.510.77 to 2.97
Occupation
    Peasant (2379)0.600.45 to 0.800.0020.730.57 to 0.940.016
Sexual precautions
    Ever used family planning (382)1.311.05 to 1.640.0210.900.71 to 1.130.312
    Ever used condom (545)1.851.27 to 2.690.0031.520.96 to 2.400.071
Other STI
    Positive syphilis (526)1.220.84 to 1.760.2811.220.87 to 1.720.225
    Self reported STD (252)1.521.02 to 2.270.0401.240.82 to 1.890.289
Sexual partners
    Partner <10 years older (1868)0.600.48 to 0.750.0000.580.45 to 0.760.001
    More than 1 partner last year (335)1.380.79 to 2.400.2371.040.58 to 1.890.885
    Partner had more than 1 partner (778)1.230.93 to 1.620.1441.160.89 to 1.500.261
Sexual exposure
    Age*1.111.07 to 1.150.000(co-linear)
    Years premarital exposure*1.151.09 to 1.220.0001.201.12 to 1.280.000
    Years since first marriage*0.970.93 to 1.020.2631.091.04 to 1.160.003
    Age at sexual debut*1.000.90 to 1.060.9041.101.02 to 1.170.011
Clinic level
Type of site
    Rural remote (705)1
    Rural roadside (1042)1.811.09 to 2.990.0001.260.90 to 1.770.857
    Urban town (656)1.561.34 to 1.801.020.62 to 1.67
    Urban city (1286)2.361.87 to 2.960.590.17 to 2.04
Risk of infected partner
    HIV percentage prevalence*1.081.05 to 1.120.0001.151.04 to 1.260.009
    Syphilis percentage prevalence*0.980.93 to 1.030.3680.960.83 to 1.080.200
Behaviour profile
    Mean partners in last year*1.980.72 to 5.470.1723.360.93 to 10.940.093
    Percentage with no premarital sex*0.990.98 to 1.000.1800.960.92 to 1.010.089
Mobility
    Percentage resident <1 year*1.021.01 to 1.040.0101.021.00 to 1.040.035