Table 4 Perinatal outcomes of the 2nd birth (post-intervention)

Birth interval (months)

Mead (SD)

F 0.89, p 0.35; unequal variance in birth interval

Missing

Birth weight

Mean (SD)

Difference -97 g

Missing data

Low birth weight (<2500 g)

OR (exact) 1.85 [0.91, 3.91]

Birth weight <10^thpercentile*

OR (exact) 1.14 [0.55, 2.38]

Low birth weight

<1000 g

1000–1499

1500–1999

2000–2499

All with birth weight (≥ 2,500 g

Missing data

All births

Gestation

Mean (SD)

Preterm birth (<37 weeks)

OR (exact) 1.44 (0.73, 2.91)

Preterm birth

20–27 weeks

28–31 weeks

32–36 weeks

All with gestations ≥ 37 weeks

Missing data

All gestations