Table 2

Risk factors for bacterial STI (chlamydia and/or gonorrhoea) among Indigenous WPHC participants 15 years and older

UnadjustedAdjusted
Independent variableNoNo of casesPrevalence (%)OR (95% CI)p ValueOR (95%CI)*p (exact two sided)
*Adjusted for clustering at the community level.
†SEIFA score was categorised in units of 100 and each decrease of 100 units results in an estimated adjusted OR of 1.16.
‡Alcohol consumption at unsafe levels among those who had consumed alcohol in the week before the survey.
Sex
    Male1361116 8.51.001.00
    Female145615110.41.24 (0.96 to 1.60) 0.101.51 (1.15 to 1.93) 0.001
Age (years)
    15–19 318 7323.08.11 (5.04 to 13.03)<0.017.78 (4.77 to 12.67)<0.001
    20–24 364 7119.56.59 (4.22 to 10.29)<0.015.50 (3.41 to 8.85)<0.001
    25–29 366 3710.13.06 (2.02 to 4.62)<0.012.49 (1.53 to 4.05)<0.001
    30–34 350 25 7.12.09 (1.32 to 3.33)<0.011.78 (1.04 to 3.05) 0.036
    35–39 319 22 6.92.02 (1.10 to 3.69) 0.021.78 (0.92 to 3.46) 0.087
    40+1100 39 3.6 1.001.00
Alcohol
    yes191621911.42.14 (1.53 to 3.00)<0.011.74 (1.27 to 2.39) 0.001
    no 896 48 5.4 1.001.00
Smoking
    yes168120112.02.20 (1.70 to 2.83)<0.011.46 (1.14 to 1.87) 0.003
    no1133 66 5.81.001.00
SEIFA (CD scores)
    500–700129715311.81.001.00
    701–900 997 78 7.80.63 (0.39 to 1.02) 0.0620.64 (0.38 to 1.07) 0.09
    901+ 523 36 6.90.55 (0.32 to 0.94) 0.030.47 (0.27 to 0.83)<0.01
    Categories†1.20 (1.04 to 1.39) 0.0111.16 (1.03 to 1.30) 0.015
Hospital
    no 662 40 6.01.83 (1.16 to 2.90) 0.011.75 (0.91 to 3.38) 0.093
    yes215522710.51.001.00
Resident population
    0–100 190 10 5.30.42 (0.14 to 1.25) 0.120.45 (0.14 to 1.45) 0.335
    101–200 798 71 8.90.74 (0.36 to 1.51) 0.400.66 (0.32 to 1.38) 0.739
    201–300 502 6112.21.04 (0.53 to 2.06) 0.910.93 (0.49 to 1.78) 0.824
    301–400 346 23 6.70.54 (0.22 to 1.29) 0.170.83 (0.28 to 2.49) 0.271
    401–500 281 20 7.10.58 (0.30 to 1.11) 0.101.71 (0.57 to 5.09) 0.182
    501+ 700 8211.71.001.00
Resident MO
    yes 744 50 6.70.62 (0.39 to 0.98) 0.04
    no207321710.51.00
pop:RN ratio
    0–200 910 9410.31.00
    201–400 646 54 8.40.79 (0.35 to 1.78) 0.57
    401–600 552 48 8.70.83 (0.37 to 1.87) 0.65
    >600 367 31 8.50.80 (0.46 to 1.38) 0.43
pop:HW ratio
    0–100 386 28 7.31.00
    101–200134816412.21.77 (0.96 to 3.27) 0.07
    201–300 495 30 6.10.82 (0.37 to 1.86) 0.64
    >300 394 31 7.91.09 (0.56 to 2.11) 0.79
Distance to centre
    0–50 km1209120 9.91.11 (0.67 to 1.84) 0.68
    51–100 km 498 5010.01.13 (0.40 to 3.15) 0.82
    101–200 km 266 21 7.90.87 (0.32 to 2.37) 0.78
    >200 km 844 76 9.01.00
Road access
    yes1889187 9.91.16 (0.66 to 2.04) 0.59
    no 928 80 8.61.00
Unsafe drinker‡
    yes114614312.51.52 (0.93 to 2.50) 0.081
    no 256 22 8.61.00
Visiting SHS
    yes161819011.71.51 (0.85 to 2.69) 0.16
    no 445 36 8.11.00
Visiting SHS (freq)
    1–4 visits145215810.91.00
    >4 611 6811.11.03 (0.69 to 1.54) 0.90
Visiting WHS
    yes2379233 9.81.22 (0.67 to 2.20) 0.52
    no 244 20 8.21.00
Visiting WHS (freq)
    1–4 visits1417126 8.91.00
    >4 992 88 8.91.00 (0.59 to 1.70) 0.99
Licensed liquor outlet
    yes2043197 9.61.07 (0.68 to 1.69) 0.76
    no 774 70 9.01.00
Condom availability (health centre)
    yes2547250 9.82.65 (0.51 to 13.78) 0.25
    no 76 3 4.01.00
Condom availability (community)
    yes 580 53 9.10.93 (0.63 to 1.35) 0.69
    no2043200 9.81.00