Maternal characteristics among normal weight, overweight and obese women* (singleton, first pregnancies)
| Normal† n=71 538 | Overweight† n=36 188 | Obese† n=25 173 | ||||
| N | % | N | % | N | % | |
| Maternal age (y) | ||||||
| 20–24 | 19 372 | 27.1 | 9152 | 25.3 | 6851 | 27.2 |
| 25–29 | 23 871 | 33.4 | 11 895 | 32.9 | 8280 | 32.9 |
| 30–34 | 20 488 | 28.6 | 10 304 | 28.5 | 6777 | 26.9 |
| 35–39 | 7807 | 10.9 | 4837 | 13.4 | 3265 | 13.0 |
| Carstairs 2001 quintiles for Scotland | ||||||
| Q1 (least deprived) | 14 546 | 20.3 | 6715 | 18.6 | 3833 | 15.2 |
| Q2 | 13 574 | 19.0 | 6733 | 18.6 | 4578 | 18.2 |
| Q3 | 14 245 | 19.9 | 7382 | 20.4 | 5005 | 19.9 |
| Q4 | 14 930 | 20.9 | 7777 | 21.5 | 5909 | 23.5 |
| Q5 (most deprived) | 14 243 | 19.9 | 7581 | 21.0 | 5848 | 23.2 |
| Maternal smoking in pregnancy | ||||||
| No | 61 116 | 85.4 | 31 119 | 86.0 | 21 130 | 83.9 |
| Yes | 10 422 | 14.6 | 5069 | 14.0 | 4043 | 16.1 |
*Figures show women who had complete data on age, deprivation, maternal smoking and the conditions occurring during pregnancy.
†Maternal weight status at first antenatal visit.