Group

N

Gender (male/female)

Gestational age (week)

Age in days

Birth weight (kg)

Complication (hyaline membrane disease/mild

asphyxia/respiratory distress syndrome)

Combination group

30

20/10

30.21 ± 3.38

6.06 ± 0.59

1.22 ± 0.17

23/5/2

PICC group

30

18/12

30.45 ± 3.55

6.15 ± 0.66

1.26 ± 0.24

24/3/3

x2/t

0.2871

0.2682

0.5568

0.7449

0.7213

p

0.5921

0.7895

0.5798

0.4593

0.6972