Comparison of characteristics of mothers in the prescreeeningand postscreening periods
| Variable | Category | 2009–2013 (n=25 073) | 2014–2015 (n=9104)* | p Value |
|---|---|---|---|---|
| Gestation (weeks) | – | 39.1±2.1 | 39.1±2.0 | 0.43 |
| Age (years) | – | 29.0±5.4 | 29.7±5.3 | <0.001 |
| Mode of birth | Caesarean | 7163 (28.6%) | 2698 (29.9%) | 0.05 |
| Instrumental | 3162 (12.6%) | 1123 (12.5%) | ||
| SVD | 14 748 (58.8%) | 5193 (57.6%) | ||
| Ethnicity | Black | 3401 (13.6%) | 867 (9.6%) | <0.001 |
| British/Irish | 2665 (10.7%) | 770 (8.6%) | ||
| White other | 4964 (19.9%) | 2393 (26.6%) | ||
| Indian subcontinent | 11 811 (47.2%) | 4237 (47.0%) | ||
| Other | 2166 (8.7%) | 741 (8.2%) |
Figures are Mean±SD or number (percentage).
*Complete missing demographic data in 84 mothers.
SVD, spontaneous vaginal delivery.