Age at delivery | | | <0.001 |
<20 | 11.1 (7.7 to 15.9) | 4.9 (4.4 to 5.3) | |
20–29 | 59.3 (52.3 to 65.9) | 41.3 (39.6 to 43.0) | |
30–39 | 28.6 (22.6 to 35.5) | 50.3 (48.5 to 52.1) | |
≥40 | 1.0 (0.3 to 3.9) | 3.6 (3.3 to 4.0) | |
Ethnic group | | | 0.52 |
White | 88.3 (82.3 to 92.5) | 86.8 (84.3 to 88.9) | |
Other ethnic group | 11.7 (7.5 to 17.7) | 13.2 (11.1 to 15.7) | |
Social class | | | <0.001 |
Managerial | 17.3 (18.8 to 24.6) | 44.9 (42.7 to 47.1) | |
Intermediate occupations | 16.0 (11.5 to 21.8) | 19.6 (18.8 to 20.5) | |
Routine and manual | 51.3 (44.5 to 58.0) | 30.8 (29.1 to 32.6) | |
Never worked and long term unemployed | 15.4 (11.2 to 20.9) | 4.6 (4.0 to 5.4) | |
Household income | | | <0.001 |
<£10 400 | 48.4 (41.3 to 55.4) | 22.1 (20.7 to 23.6) | |
£10 400–£20 800 | 35.2 (28.7 to 42.2) | 31.9 (30.3 to 33.4) | |
£20 800–£31 200 | 9.5 (6.0 to 14.9) | 22.1 (20.9 to 23.3) | |
£31 200–£52 000 | 5.3 (2.5 to 10.9) | 17.0 (15.8 to 18.3) | |
>£52 000 | 1.7 (0.7 to 4.2) | 7.0 (5.6 to 8.6) | |
Education | | | <0.001 |
Higher | 11.7 (7.2 to 18.5) | 32.9 (30.7 to 35.1) | |
Medium | 7.5 (4.6 to 12.1) | 14.3 (13.6 to 15.0) | |
Lower | 37.4 (31.6 to 43.6) | 38.0 (36.3 to 39.7) | |
Other | 4.0 (1.8 to 8.7) | 2.4 (2.1 to 2.8) | |
Lone parent | 10.4 (6.81 to 1525) | 3.5 (3.0 to 4.1) | <0.001 |