Exposure/outcome | Preterm birth | SGA | LGA | |||||||
---|---|---|---|---|---|---|---|---|---|---|
n | cases | OR | 95% CI | cases | OR | 95% CI | cases | OR | 95% CI | |
High strain | 3337 | 162 | 0.98 | (0.82 to 1.16) | 327 | 1.01 | (0.89 to 1.14) | 268 | 0.81 | (0.70 to 0.92) |
Passive | 4278 | 199 | 0.93 | (0.80 to 1.09) | 400 | 0.97 | (0.86 to 1.09) | 402 | 0.98 | (0.87 to 1.09) |
Active | 11 075 | 558 | 1.04 | (0.93 to 1.15) | 935 | 0.90 | (0.83 to 0.98) | 1085 | 1.02 | (0.95 to 1.10) |
Low strain | 30 200 | 1456 | 1.00 | – | 2750 | 1.00 | – | 2897 | 1.00 | – |
*Covariates: maternal age, parity, smoking during pregnancy, alcohol, coffee, physical exercise, maternal Body Mass Index, type of work, maternal diabetes or epilepsy, gestational age at interview and parents’ heights.
OR with 95% CIs, controlled for covariates.