Smoking status just before pregnancy | Total n (%) | ||||
---|---|---|---|---|---|
Never smoked n (%) | Ex-smoker n (%) | Smoker: decreased or quit in pregnancy n (%) [within smoker%] | Smoker: no change in pregnancy n (%) [within smoker%] | ||
Mothers who planned pregnancy | 5,870 (62.3) | 1,173 (12.4) | 1,955 (21.1) [82.1] | 425 (4.5) [17.9] | 9,463 (100) [100] |
Mothers who did not plan pregnancy | 3,674 (45.9) | 574 (7.2) | 2,902 (36.2) [77.1] | 860 (10.7) [22.9] | 8,010 (100) [100] |