Table 1 Clinical Characteristics of the two study groups

Number of patients

21

13

Gestational Age (weeks) mean ± SD

30.3 ± 1.0

30.8 ± 2.3

Birth Weight (g) mean ± SD

(range)

1340 ± 180

(1010 - 1640)

1575 ± 635

(565 - 2480)

Sex ratio (male/female)

1.1

0.44

Postnatal Age (days) mean ± SD

(range)

6 ± 1

(2 -7)

10.6 ± 3.5

(8 - 20)

IVH <3 grade (n°)

2

4

CLD n°(%)

3 (14,3)

3 (23,1)