Determinants found to be associated with Chlamydia trachomatis infections in men and women in the development group (75% of all participants) by stepwise logistic regressions analysis
| Determinants included in the model | OR | AUC [95% CI] | Sensitivity (%) | % of total population screened | Prevalence in screened population (%) | |
|---|---|---|---|---|---|---|
| *The cut off value for men is a predicted probability >1%. | ||||||
| †The cut off value for women is a predicted probability >2%. | ||||||
| “% of total population screened” is the true positive fraction + the false positive fraction, “prevalence in screened population” is the predictive value positive, OR = odds ratio, CI = confidence interval, AUC = area under the curve, a measure of diagnostic accuracy. | ||||||
| Female model | Surinam or Antillean origin | 2.10 | 0.67 [0.65–0.69] | 78* | 52 | 4.4 |
| Unmarried and not cohabiting | 2.26 | |||||
| New sex partner previous 2 months | 2.44 | |||||
| Male model | Surinam or Antillean origin | 3.01 | 0.58 [0.55–0.60] | 26† | 12 | 5.4 |
| Painful micturition | 3.04 | |||||