Group 1: Ventilator

Ventilator without Surfactant

(N = 19)

Ventilator with Surfactant

(N = 10)

Independent t-test

Mean

SD

Mean

SD

T

P-value

Cortisol level (mg/dl)

34.80

11.03

41.32

4.66

1.776

0.087

Group 2: CPAP

CPAP without surfactant

(N = 30)

CPAP with surfactant

(N = 3)

Independent t-test

Mean

SD

Mean

SD

T

P-value

Cortisol level (mg/dl)

28.33

6.27

32.30

5.92

-1.842

0.045