Table 3 Odds ratios for school based screening in multivariable logistic regression models including the significant variables from stepwise selection
Girls | Boys | All participants | |||||||
|---|---|---|---|---|---|---|---|---|---|
Characteristic | OR | 95% CI | p 1 | OR | 95% CI | p 1 | OR | 95% CI | p 1 |
Gender | |||||||||
Girls2 | NA | NA | 0.57 | 0.34–0.97 | 0.040 | ||||
Age | |||||||||
OR per year | 0.91 | 0.65–1.27 | 0.58 | 0.82 | 0.52–1.28 | 0.39 | 0.86 | 0.67–1.11 | 0.24 |
High school | |||||||||
Study affiliation | |||||||||
Academic | 1.00 | 0.001 | ns | 1.00 | 0.013 | ||||
Vocational | 0.33 | 0.17–0.65 | ns | 0.51 | 0.30–0.87 | ||||
Alcohol/drug use | |||||||||
Low | ns | 1.00 | 0.039 | ns | |||||
Medium | ns | 0.75 | 0.22 to 2.58 | ns | |||||
High | ns | 0.26 | 0.08 to 0.91 | ns | |||||
Sexual behaviour | |||||||||
Age first intercourse | |||||||||
≥15 years | ns | 1.00 | 0.001 | 1.00 | 0.029 | ||||
≤14 years | ns | 0.23 | 0.10–0.57 | 0.58 | 0.35–0.95 | ||||
Condom use first intercourse | |||||||||
Yes | 1.00 | 0.010 | ns | 1.00 | 0.026 | ||||
No3 | 0.42 | 0.21–0.82 | ns | 0.57 | 0.35–0.94 | ||||
Condom use last intercourse | |||||||||
Yes | ns | 1.00 | 0.003 | ns | |||||
No4 | ns | 3.86 | 1.59–9.41 | ns | |||||
Chlamydia infection | |||||||||
Urogenital symptoms5 | |||||||||
No | 1.00 | <0.001 | ns | 1.00 | 0.001 | ||||
Yes | 4.26 | 1.89–9.63 | ns | 3.23 | 1.57–6.65 |