| Concurrent partnerships | Gap 1 = 3 months | Gaps 4 or greater months | |||
---|---|---|---|---|---|---|
 | Crude odds ratio | Fully adjusted odds ratio* | Crude odds ratio | Fully adjusted odds ratio* | Crude odds ratio | Fully adjusted odds ratio* |
(95% confidence interval) | (95% confidence interval) | (95% confidence interval) | (95% confidence interval) | (95% confidence interval) | (95% confidence interval) | |
 | n = 478 | n = 220 | n = 143 | |||
 | Weighted n = 1,902,824 | Weighted n = 903,503 | Weighted n = 530,948 | |||
Age at first intercourse | Â | Â | Â | Â | Â | |
<15Â years | 4.07 (2.67-6.21) | 3.72 (2.46-5.62) | 2.19 (1.23-3.90) | 2.13 (1.15-3.94) | 0.96 (0.53-1.76) | 0.94 (0.50-1.75) |
15-17 years | 1.89 (1.40-2.56) | 1.60 (1.14-2.24) | 1.03 (0.64-1.64) | 0.89 (0.55-1.45) | 1.32 (0.78-2.23) | 1.11 (0.67-1.81) |
18 + years | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 |