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Table 3 Positive STI bivariate associations and logistic regression model output for relationships between demographics and a positive STI diagnosis (all drinkers)

From: Assessing the delivery of alcohol screening and brief intervention in sexual health clinics in the north east of England

  N % testing positive for any STI Odds ratio P Low 95% Up 95%
MalesR 1297 25%     
Females 1483 23% 0.901 0.265 0.749 1.083
No significant difference between gender and % testing positive for any STI: χ2 = 1.665, p = 0.106     
Under 18R 236 26%     
18–19 411 24% 1.077 0.701 0.738 1.571
20–24 964 26% 1.057 0.748 0.756 1.477
25–29 409 25% 0.851 0.404 0.583 1.243
30–34 237 22% 0.687 0.095 0.443 1.067
35–39 159 20% 0.632 0.073 0.383 1.043
40+ 364 23% 0.756 0.166 0.51 1.123
No significant difference between age and % testing positive for any STI: χ2 = 4.613, p = 0.594     
Non-student 2064 26% 1.553 0.001a 1.193 2.021
StudentR 716 18%     
Significant difference between student status and % testing positive for any STI: χ2 = 18.580, p < 0.0005     
Heterosexual 2649 24% 1.097 0.674 0.712 1.692
OtherR 131 22%     
No significant difference between sexual orientation and % testing positive for any STI: χ2 = 0.332, p = 0.323     
White 2706 24% 0.808 0.458 0.46 1.419
Black/minority/ethnicR 74 23%     
No significant difference between sexual orientation and % testing positive for any STI: χ2 = 0.067, p = 0.461     
Deprivation quintile 1 357 28% 1.473 0.018b 1.067 2.033
Deprivation quintile 2 553 28% 1.495 0.006a 1.12 1.995
Deprivation quintile 3 609 27% 1.462 0.008a 1.103 1.937
Deprivation quintile 4 435 25% 1.389 0.033b 1.027 1.879
Deprivation quintile 5R 789 18%     
Significant difference between deprivation status and % testing positive for any STI: χ2 = 24.255, p < 0.0005     
Low riskR 1568 24%     
Increasing risk 1034 24% 1.03 0.761 0.85 1.249
Higher risk 109 23% 0.92 0.73 0.574 1.476
Probable dependence 69 38% 1.7 0.041b 1.021 2.83
No significant difference between risk status and % testing positive for any STI: χ2 = 7.116, p = 0.068     
Total 2780 24%     
  1. R - reference group
  2. a - significant at 99% level
  3. b - significant at 95% level