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Table 2 Atonic postpartum hemorrhage by region and hospital volume, British Columbia, 2000-2009

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

  1. 1n refers to number of cases of atonic postpartum hemorrhage.
  2. 2P value based on data for all years between 2000 and 2009.
  3. RR denotes rate ratio and 95% CI denotes 95% confidence intervals.