Birth weight (g) | SGA | ||||
---|---|---|---|---|---|
Crude Diff (g) (95% CI) | Adjusted Diff a (g) (95% CI) | SGA/Total (%) | Crude OR (95% CI) | Adjusted OR b (95% CI) | |
Main effect | |||||
Non-smoking | 0 (Ref) | 0 (Ref) | 179/2681 (6.7%) | 1.0 (Ref) | 1.0 (Ref) |
Smoking | − 167.6 (− 211.5, − 123.7) | −158.4 (−203.4, −113.4) | 69/545 (12.7%) | 2.02 (1.51, 2.72) | 1.92 (1.42, 2.60) |
Strata of maternal pre-pregnancy overweight: | |||||
Non-overweight | |||||
Non-smoking | 0 (Ref) | 0 (Ref) | 157/2168 (7.2%) | 1.0 (Ref) | 1.0 (Ref) |
Smoking | −177.1 (− 226.6, − 127.6) | −164.5 (−215.2, −113.8) | 58/418 (13.9%) | 2.06 (1.49, 2.85) | 1.96 (1.41, 2.72) |
Overweight | |||||
Non-smoking | 0 (Ref) | 0 (Ref) | 22/513 (4.3%) | 1.0 (Ref) | 1.0 (Ref) |
Smoking | − 156.9 (− 250.4, −63.5) | −145.2 (−241.1, −49.3) | 11/127 (8.6%) | 2.12 (0.99, 4.48) | 1.89 (0.87, 4.09) |