Gestation in weeks, mean (SD)

30.8 (3.6)

34.2 (4.7)

0.001

Birthweight, mean (SD)

1228.1 (498.7)

2067.1 (665.5)

<0.001

Birthweight < p10, n (%)

9 (33.3)

156 (19.9)

0.088

Sex distribution, male, n (%)

10 (37.0)

389 (48.2)

0.212

TTTS, n (%)

8 (29.6)

91 (11.5)

0.005