Maternal and labour outcomes in First Nations women and other women in Ontario without diabetes mellitus, 2002/03 to 2014/15
| Outcome | Other women | First Nations women | ||||
|---|---|---|---|---|---|---|
| 2002/03–2005/06 | 2006/07–2009/10 | 2010/11–2014/15 | 2002/03–2005/06 | 2006/07–2009/10 | 2010/11–2014/15 | |
| Preeclampsia | ||||||
| Rate per 100 deliveries (95% CI) | 1.1(1.1–1.1) | 1.0(1.0–1.1) | 1.3(1.2–1.3) | 1.4(1.1–1.8) | 1.3(1.0–1.7) | 1.7(1.4–2.1) |
| IRR (95% CI) | 1.32 (1.04–1.66) | 1.29 (1.01–1.65) | 1.36 (1.13–1.63) | |||
| p for trend 2002/03–2014/15 | < 0.001 | 0.2 | ||||
| Labour induction | ||||||
| Rate per 100 deliveries (95% CI) | 20.6 (20.5–20.7) | 20.8 (20.6–20.9) | 24.1 (23.9–24.2) | 22.5 (21.1–23.9) | 23.7 (22.4–25.0) | 26.4 (25.2–27.7) |
| IRR (95% CI) | 1.09 (1.03–1.16) | 1.14(1.08–1.21) | 1.10(1.05–1.15) | |||
| p for trend 2002/03–2014/15 | < 0.001 | < 0.001 | ||||
| Obstructed labour | ||||||
| Rate per 100 deliveries (95% CI) | 5.7 (5.6–5.7) | 6.2 (6.1–6.3) | 6.2 (6.1–6.3) | 4.6 (4.0–5.3) | 5.5 (4.9–6.2) | 5.3 (4.8–5.9) |
| IRR (95% CI) | 0.81 (0.71–0.93) | 0.89 (0.79–1.00) | 0.86 (0.78–0.95) | |||
| p for trend 2002/03–2014/15 | < 0.001 | 0.03 | ||||
| Cesarean delivery | ||||||
| Rate per 100 deliveries (95% CI) | 26.5 (26.4–26.7) | 28.3 (28.2–28.5) | 27.8 (27.7–27.9) | 27.4 (25.8–29.0) | 28.9 (27.4–30.4) | 28.5 (27.2–29.8) |
| IRR (95% CI) | 1.03 (0.98–1.10) | 1.02 (0.97–1.07) | 1.02 (0.98–1.07) | |||
| p for trend 2002/03–2014/15 | < 0.001 | 0.009 | ||||
Note: CI = confidence interval, IRR = incidence rate ratio (incident rate in First Nations women/incidence rate in other women per study period).