| Group 1 Ventilator (N = 29) | Group 2 CPAP (N = 33) | Group 3 Headbox (N = 28) | One-way ANOVA | ||||
Mean | SD | Mean | SD | Mean | SD | F | P-value | |
Cortisol level (mg/dl) | 39.22 | 9.91 | 28.96 | 6.48 | 25.88 | 5.42 | 25.131 | 0.001 |