TABLE 2.
Characteristics of women with PAS in the UK and France
| UK n (%) | France n (%) | p | |
|---|---|---|---|
| N = 134 | N = 219 | ||
| Age (years), mean (SD) | 34. 6 (5.6) | 34.5 (5.1) | 0.833 |
| BMI (kg/m2) | |||
| <25 | 60 (45.8) | 119 (55.3) | 0.111 |
| 25 to <30 | 42 (32.1) | 48 (22.3) | |
| ≥30 | 29 (22.1) | 48 (22.3) | |
| Missing | 3 | 4 | |
| Smoking status | |||
| Did not smoke during pregnancy | 107 (80.5) | 165 (78.6) | 0.675 |
| Smoked during pregnancy | 26 (19.5) | 45 (21.4) | |
| Missing | 1 | 9 | |
| Country of birth | |||
| Not France | – | 87 (42.4) | |
| France | – | 118 (57.6) | |
| Missing | – | 14 | |
| Ethnicity | |||
| White | 99 (74.4) | – | |
| Non‐white | 34 (26.6) | – | |
| Missing | 1 | – | |
| Parity | |||
| 0 | 12 (9) | 37 (16.9) | 0.082 |
| 1 | 39 (29.1) | 66 (30.1) | |
| 2+ | 83 (61.9) | 116 (53.0) | |
| History of PPH | |||
| No | 111 (91) | 145 (79.7) | 0.008 |
| Yes | 11 (9) | 37 (20.3) | |
| N/A (nulliparous) | 12 | 37 | |
| Previous caesarean section | |||
| 0 | 9 (7.4) | 36 (19.8) | 0.011 |
| 1 | 63 (51.6) | 80 (44) | |
| 2+ | 50 (41.0) | 66 (36.3) | |
| N/A (nulliparous) | 12 | 37 | |
| Previous uterine surgery a | |||
| No | 94 (70.7) | 123 (56.2) | 0.007 |
| Yes | 39 (29.3) | 96 (43.8) | |
| Missing | 1 | 0 | |
| Previous uterine surgery and caesarean section | |||
| Yes | 129 (96.3) | 207 (94.5) | 0.457 |
| Hypertensive disorder during pregnancy | |||
| Yes | 6 (4.6) | 20 (9.1) | 0.116 |
| Missing | 3 | 0 | |
| Placenta praevia detected prior to birth | |||
| Yes | 86 (64.7) | 138 (63.0) | 0.755 |
| Missing | 1 | 0 | |
| Multiple pregnancy | |||
| Yes | 4 (3.0) | 10 (4.6) | 0.460 |
| PAS suspected prior to birth | |||
| Yes | 66 (49.6) | 94 (44.8) | 0.379 |
| Missing | 1 | 9 | |
| PAS type | |||
| Placenta accreta/increta | 94 (70.7) | 172 (78.5) | 0.096 |
| Placenta percreta | 39 (29.3) | 47 (21.5) | |
| Missing | 1 | 0 | |
Abbreviations: BMI, body mass index; PAS, placenta accreta spectrum; PPH, postpartum haemorrhage.
aIncludes: myomectomy; cavity breached; dilation and curettage; previous surgical termination of pregnancy; and evacuation of retained products of conception (excluding caesarean section). Descriptive statistics calculated excluding missing data.