| ORa | IC (95%) | Coeff | SE | Z-statistic | P |
Low birth weight | 1.78 | 0.6 - 5.1 | 0.576 | 0.53 | 1.0743 | 0.3 |
Multiple pregnancy | 0.99 | 0.5 - 1.8 | −0.0018 | 0.31 | −0.0057 | 0.9 |
Prematurity | 3.62 | 1.2 - 10.6 | 1.286 | 0.54 | 2.3480 | 0.01 |