Table 2 Unadjusted incidence of postpartum haemorrhage (PPH), by characteristics of mother and pregnancy

Intended place of birth

Hospital

267,874

2,785

1.04

Home

5,998

23

0.38

Pregnancy risk status*

Medium

73,862

968

1.31

Low

200,010

1,840

0.92

Parity

Primipara

125,963

1,653

1.31

Multipara

147,909

1,155

0.78

Mother’s age at delivery

<20

13,881

111

0.80

20-24

51,640

436

0.84

25-29

93,757

915

0.98

30-34

81,332

903

1.11

35-39

29,031

367

1.26

40+

4,231

76

1.80

Mother’s ethnic group

Black African

7,516

130

1.73

Black Caribbean

6,587

79

1.20

Mediterranean

6,808

62

0.91

Oriental

4,350

72

1.66

South Asian

34,674

320

0.92

White European

195,498

1,940

0.99

Other

11,064

137

1.24

Missing

7,375

68

0.92

Current baby’s birthweight

Low (<2500g)

5,122

31

0.61

2500g-3999g

241,301

2,195

0.91

4000g+

27,449

582

2.12

Sex of baby

Boy

140,548

1,306

0.93

Girl

133,324

1,502

1.13

Number of ultrasound scans in pregnancy

0

4,610

51

1.11

1

114,588

1,005

0.88

2

99,368

1,091

1.10

3

35,376

384

1.09

4

10,951

166

1.52

>4

5,748

84

1.46

Missing

3,231

27

0.84

Year of delivery

1988

20,901

159

0.76

1989

21,939

187

0.85

1990

22,311

234

1.05

1991

22,108

189

0.85

1992

22,040

208

0.94

1993

21,077

186

0.88

1994

21,014

189

0.90

1995

20,066

228

1.14

1996

20,950

222

1.06

1997

20,246

239

1.18

1998

20,087

240

1.19

1999

20,267

263

1.30

2000

20,866

264

1.27

Hospital providing care (anonymised)

A

8,620

73

0.85

B

16,969

117

0.69

C

7,958

66

0.83

D

21,167

321

1.52

E

8,177

88

1.08

F

20,041

192

0.96

G

20,784

150

0.72

H

25,066

237

0.95

I

29,819

389

1.30

J

22,954

298

1.30

K

19,940

228

1.14

L

19,389

144

0.74

M

20,832

191

0.92

N

17,078

149

0.87

O

15,078

165

1.09

Time of delivery

00:00–01:59

23,457

251

1.07

02:00–03:59

24,377

191

0.78

04:00–05:59

24,601

213

0.87

06:00–07:59

23,911

204

0.85

08:00–09:59

22,211

234

1.05

10:00–11:59

23,155

211

0.91

12:00–13:59

22,871

246

1.08

14:00–15:59

22,105

250

1.13

16:00–17:59

21,594

253

1.17

18:00–19:59

21,829

255

1.17

20:00–21:59

21,245

241

1.13

22:00–23:59

22,516

259

1.15