Exposure category |
Low birth weight (<2500 g) n=137145 OR3-150 (95% CI) |
Small for gestational age n=123747 OR3-150 (95% CI) |
Preterm delivery (<37 weeks) n=123747 OR3-150 (95% CI) |
No chlorination, low colour | 1.00 | 1.00 | 1.00 |
No chlorination, high colour | 1.02 (0.91 to 1.14) | 1.02 (0.89 to 1.14) | 0.92 (0.83 to 1.03) |
Chlorination, low colour | 0.99 (0.90 to 1.09) | 1.00 (0.91 to 1.11) | 0.95 (0.88 to 1.03) |
Chlorination, high colour | 0.97 (0.89 to 1.06) | 1.00 (0.91 to 1.10) | 0.91 (0.84 to 0.99) |
↵3-150 Logistic regression analysis adjusting for maternal age and parity, the child's place of birth, centrality, population density, and industrial profile of the municipality where the mother lived during pregnancy.