Table 1 Demographic variables

Number of infants (f/m)

5 (5/0)

25 (12/13)

9 (7/2)

p = 0.506*^,#

p = 0.052**^,#

Gestational age at birth (weeks) (median (range))

24.4 (23.6-25.4)

24.8 (23.1-26.4)

27 (23.6-33.6)

p = 0.402*

p = 0.160**

Birth weight (g) (median (range))

480 (370-530)

570 (340-800)

950 (395-1460)

p = 0.048*^,##

p = 0.016**^,##

Weight at presentation (g) (median (range))

970 (790-1180)

1145 (670-2470)

p = 0.64^##

Day of life at presentation (median (range))

44 (37-52)

17 (2-97)

p = 0.028^##

Postmenstrual age at presentation (weeks) (median (range))

31.0 (29.1-31.6)

33.1 (24.3-38.0)

p = 0.739^##