Table 2.
Unadjusted incidence of postpartum haemorrhage (PPH), by characteristics of mother and pregnancy
| No. of women in this group | No of PPHs in this group | % of women suffering PPH | |
|---|---|---|---|
|
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 |