Weight gain (Kg)

≤9

20 (9.1)

199 (90.9)

0.74 (0.40 - 1.37)

0.212

[9 - 12]

4 (10.8)

33 (89.2)

1.23 (0.53 - 2.86)

0.383

>12

6 (12.2)

43 (87.8)

1.32 (0.63 - 2.78)

0.288

BMI before delivery

<18.5

0 (0.0)

0 (0.0)

NC

[18.5 - 25]

5 (13.9)

31 (86.1)

1.36 (0.62 - 2.98)

0.226

[25 - 30]

9 (11.00)

73 (89.0)

Ref.