Table 3.
Odds ratios (OR) with 95 % confidence intervals (CI) for obesity by exposure to intrauterine tobacco smoking, stratified according to own smoking in generation 2 (G2).
| G2 Non-smokers (n=45124) | G2 Smokers (n=8888) | |||||||
|---|---|---|---|---|---|---|---|---|
|
| ||||||||
| Cases | Non-cases | Unadjusted OR (95% CI) | Adjusted ORb (95% CI) | Cases | Non-cases | Unadjusted OR (95% CI) | Adjusted ORb (95% CI) | |
| Obesity (BMI > 30) | ||||||||
| Non-smokers (ref) | 3209 | 25457 | 1 | 1 | 465 | 2708 | 1 | 1 |
| 1–9 cigarettes/dayc | 1484 | 8461 | 1.39 (1.30, 1.49) | 1.38 (1.29, 1.47) | 506 | 2464 | 1.20 (1.04, 1.37) | 1.19 (1.04, 1.37) |
| >9 cigarettes/day | 1158 | 5355 | 1.72 (1.59, 1.85) | 1.70 (1.58, 1.83) | 478 | 2267 | 1.23 (1.07, 1.41) | 1.23 (1.07, 1.41) |
a
G2 smokers classified as “yes” or “no”.
b
Adjusted for woman’s (G2) age, parity and mode of delivery.
c
G1 smoking during pregnancy as categorized in Medical Birth Register.