Study group

Control group

P

Gestational age at time of delivery

24 - 27 w + 6 days

0 (0.0%)

7 (29.2%)

0.04*

28 - 31 w + 6 days

3 (30.0%)

10 (41.6%)

32 - 36 w + 6 days

7 (70%)

7 (29.2%)