Table 1 Maternal and infant characteristics of the study sample (n = 912)

Maternal age (years)

27.6 (4.3)

Maternal pre-pregnant weight (kg)

45.7 (5.3)

Maternal height (cm)

152.7 (5.0)

Maternal pre-pregnancy BMI (kg/m²)

19.6 (2.0)

Maternal underweight (<18.5 kg/m²)

280 (30.8)

 0

32 (4.0)

 1

752 (94.6)

  ≥ 2

11 (1.4)

Sex of infant (Male)

457 (50.1)

Birthweight (g)

3098.3 (457.5)

Birth length (cm)

49.0 (3.1)

Low birthweight (<2500 g)

45 (5.0)

High birthweight (>3500 g)

123 (13.6)