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