Maternal and labour outcomes in First Nations women and other women in Ontario with gestational diabetes, 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) | 1.9 (1.7–2.1) | 1.6 (1.4–1.8) | 2.1 (1.9–2.3) | 3.2 (1.8–5.2) | 4.7 (3.0–7.1) | 4.4 (3.1–6.1) |
| IRR (95% CI) | 1.66 (1.00–2.77) | 2.96 (1.93–4.55) | 2.09 (1.49–2.93) | |||
| p for trend 2002/03–2014/15 | < 0.001 | 0.2 | ||||
| Labour induction | ||||||
| Rate per 100 deliveries (95% CI) | 30.0 (29.1–30.9) | 30.7 (29.9–31.5) | 37.5 (36.7–38.3) | 38.5 (33.2–44.4) | 42.4 (36.9–48.6) | 46.9 (42.3–51.8) |
| IRR (95% CI) | 1.28 (1.11–1.49) | 1.38 (1.20–1.59) | 1.25 (1.13–1.38) | |||
| p for trend 2002/03–2014/15 | < 0.001 | 0.001 | ||||
| Obstructed labour | ||||||
| Rate per 100 deliveries (95% CI) | 5.8 (5.4–6.2) | 6.5 (6.1–6.8) | 6.6 (6.2–6.9) | 4.6 (2.9–6.9) | 5.8 (3.9–8.3) | 5.5 (4.1–7.4) |
| IRR (95% CI) | 0.79 (0.52–1.21) | 0.90 (0.63–1.30) | 0.84 (0.63–1.13) | |||
| p for trend 2002/03–2014/15 | < 0.001 | 0.4 | ||||
| Cesarean delivery | ||||||
| Rate per 100 deliveries (95% CI) | 35.4 (34.5–36.3) | 37.4 (36.6–38.2) | 36.4 (35.7–37.1) | 41.8 (36.2–48.1) | 41.4 (36.0–47.4) | 43.4 (38.9–48.3) |
| IRR (95% CI) | 1.18 (1.03–1.36) | 1.11 (0.97–1.27) | 1.19 (1.07–1.33) | |||
| p for trend 2002/03–2014/15 | 0.2 | 0.6 | ||||
Note: CI = confidence interval, IRR = incidence rate ratio (incident rate in First Nations women/incidence rate in other women per study period).