Control Group

Study Group

p

Gestational age (week)

31 (26 - 35)

29 (23 - 35)

<0.001*

Birth weight (gram)

1757 (820 - 2830)

1332 (490 - 2850)

<0.001*

Length of stay in incubator (day)

24(2 - 120)

46 (6 - 195)

<0.001*

Gender(male/female)

98/91

74/54

0.304