Table 5.
Maternal outcomes in LEAP area women allocated to caseload midwifery and traditional care and women in other postal code
| Other areas | LEAP area caseload midwifery | LEAP area traditional care | Comparison of caseload midwifery and traditional care in LEAP area* | ||||
| N 8430 (%) | N 230 (%) | N 293 (%) | Risk ratio (95% CI) | Interaction test P value |
Risk difference | No needed to treat† | |
| Mode of birth | |||||||
| Any caesarean section | 3061 (36.3) | 56 (24.3) | 114 (38.9) | 0.65 (0.47 to 0.90) | 0.01 | −0.14 | 7.4 |
| Elective caesarean | 1317 (15.6) | 21 (9.1) | 48 (16.3) | ||||
| Emergency caesarean | 1744 20.7) | 35 (15.2) | 66 (22.5) | 0.59 (0.38 to 0.94) | 0.03 | −0.11 | 10 |
| Assisted vaginal birth (forceps/ventouse) | 1205 (14.3) | 34 (14.8) | 31 (10.6) | ||||
| Normal vaginal birth | 4035 (47.9) | 138 (60) | 143 (48.8) | ||||
| Breech vaginal | 43 (0.5) | 2 (0.9) | 2 (0.7) | ||||
| Unknown | 86 (1.0) | 0 (0) | 3 (1.0) | ||||
| Gestational diabetes | 960 (11.4) | 22 (9.6) | 29 (9.9) | ||||
| Pregnancy induced hypertension | 141 (1.7) | 3 (1.3) | 8 (2.7) | ||||
| Pre-eclampsia | 205 (2.4) | 5 (2.2) | 7 (2.4) | ||||
| Postpartum haemorrhage (>501 mL) | 3289 (39.0) | 67 (29.1) | 111 (37.8) | 0.77 (0.57 to 1.04) | 0.10 | −0.09 | 11.6 |
| Inpatient admission | |||||||
| <24 hours | 1148 (13.6) | 27 (11.1) | 38 (13.0) | ||||
| >5 days (121 hours) | 1387 (16.5) | 32 (13.9) | 41 (14.0) | ||||
| Admission not documented | 120 (1.4) | 5 (2.2) | 5 (1.7) | ||||
*Comparisons carried out using inverse probability weighting to minimise potential bias.
†NNT: Number of women who need to be treated to prevent one bad outcome.
LEAP, Lambeth Early Action Partnership.