From: Trends in postpartum hemorrhage from 2000 to 2009: a population-based study
Region (by health authority of mother's residence) | All years | Rate per 100 deliveries by year | 2009 vs. 2000 | P for trend2 | |||||
---|---|---|---|---|---|---|---|---|---|
n1 | rate | 2000 | 2001 | 2008 | 2009 | RR | 95% CI | ||
Fraser | 8340 | 5.2 | 5.0 | 4.9 | 6.6 | 6.0 | 1.19 | 1.09-1.30 | <0.001 |
Interior | 2769 | 4.7 | 3.9 | 3.4 | 5.8 | 7.0 | 1.81 | 1.54-2.11 | <0.001 |
Northern | 1694 | 4.9 | 5.2 | 4.8 | 5.6 | 4.1 | 0.79 | 0.64-0.97 | 0.03 |
Vancouver Coastal | 6995 | 7.1 | 5.4 | 6.0 | 8.8 | 8.3 | 1.55 | 1.39-1.72 | <0.001 |
Vancouver Island | 2206 | 3.7 | 3.8 | 3.8 | 4.4 | 4.9 | 1.29 | 1.09-1.53 | <0.001 |
Hospital Volume (by deliveries per year) | |||||||||
<500 | 2537 | 4.5 | 5.0 | 4.1 | 5.6 | 5.2 | 1.04 | 0.88-1.2 | <0.001 |
500-999 | 2363 | 4.6 | 3.8 | 4.0 | 5.6 | 5.6 | 1.49 | 1.27-1.75 | <0.001 |
1000-1499 | 3369 | 4.2 | 5.6 | 4.4 | 5.3 | 4.0 | 0.71 | 0.61-0.84 | 0.88 |
1500-2499 | 3851 | 6.3 | 1.5 | 4.9 | 8.4 | 8.2 | 5.45 | 4.30-6.92 | <0.001 |
≥2500 | 9980 | 6.1 | 5.6 | 5.5 | 6.8 | 6.5 | 1.15 | 1.05-1.25 | <0.001 |