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Table 5 Maternal mortality rates by cause using ICD-MM, per 100,000 maternities, 2009 to 2013

From: Examining the impact of introducing ICD-MM on observed trends in maternal mortality rates in the UK 2003–13

Cause of death

2009–11

2010–12

2011–13

n

Rate

95 % CI

n

Rate

95 % CI

n

Rate

95 % CI

Direct causes

 Group 1: Pregnancy with abortive outcome

4

0.17

0.05–0.43

8

0.33

0.14–0.66

6

0.25

0.09–0.55

 Group 2: Hypertensive disorders

10

0.42

0.20–0.77

9

0.38

0.18–0.71

6

0.25

0.09–0.55

 Group 3: Obstetric Haemorrhage

14

0.59

0.32–0.99

11

0.46

0.23–0.82

13

0.55

0.29–0.94

 Group 4: Pregnancy-related infection

16

0.67

0.38–1.09

13

0.54

0.29–0.93

8

0.34

0.15–0.66

 Group 5: Other obstetric complications

43

1.81

1.31–2.43

44

1.83

1.33–2.46

47

1.98

1.46–2.63

 Group 6: Unanticipated complications of management

3

0.12

0.03–0.37

4

0.17

0.05–0.43

3

0.13

0.03–0.37

Indirect causes

 Group 7: Non-obstetric complications

163

6.85

5.84–7.99

154

6.41

5.44–7.51

131

5.52

4.62–6.55

 Group 8: Unknown/undetermined

0

0

-

0

0

-

0

0

-

Coincidental causes

 Group 9: Coincidental causes

23

0.98

0.61–1.45

26

1.08

0.71–1.59

26

1.10

0.72–1.61

  1. Source: MBRRACE-UK, Office for National Statistics, General Register Office for Scotland, Northern Ireland Statistics and Research Agency