Exposure/outcome | Preterm birth | SGA | LGA | |||||||
---|---|---|---|---|---|---|---|---|---|---|
n | cases | OR | 95% CI | cases | OR | 95% CI | cases | OR | 95% CI | |
High strain | 3337 | 162 | 1.00 | (0.84 to 1.18) | 327 | 1.07 | (0.94 to 1.20) | 268 | 0.83 | (0.73 to 0.96) |
Passive | 4278 | 199 | 0.96 | (0.83 to 1.22) | 400 | 1.03 | (0.92 to 1.15) | 402 | 0.98 | (0.87 to 1.09) |
Active | 11 075 | 558 | 1.04 | (0.94 to 1.15) | 935 | 0.92 | (0.85 to 0.99) | 1085 | 1.02 | (0.95 to 1.10) |
Low strain | 30 200 | 1456 | 1.00 | – | 2750 | 1.00 | – | 2897 | 1.00 | – |
OR with 95% CIs.