Weight at birth

Exposed

N = 59

n (%)

Not exposed

N = 181

n (%)

RR

(IC = 95%)

P-value

<4000

50 (84.7)

165 (91.2)

0.6 (0.4 - 1.2)

0.161

≥4000

9 (15.3)

16 (8.8)

Moyenne ± ET

3472 ± 580.8

3 306 ± 461.9

0.023

Min - Max

2100 - 5500

1 800 - 4550