Table 2

Comparison of the baseline characteristics in NCPAP and nHFOV groups

Newborn characteristicsNCPAP (n=34)nHFOV (n=34)
PO2 before intervention, mm Hg37 (13.30)36.35 (12.49)
PCO2 before intervention, mm Hg42.57 (7.68)43.78 (9.94)
HCO3 before intervention19.18 (3.15)20.04 (5.74)
BE before intervention−5.94 (3.15)−6.37 (2.58)
pH before intervention7.30 (7.27–7.34)7.28 (7.24–7.35)
Received prenatal steroids10 (29.4%)8 (23.5%)
Type of steroid
 Dexamethasone6 (60%)6 (75%)
 Betamethasone4 (40%)2 (25%)
Received surfactant18 (52.9%)18 (52.9%)
Age when received surfactant5.43 (6.20)7.16 (6.45)
Number of surfactant received
 113 (72.2%)17 (94.4%)
 24 (22.3%)1 (5.6%)
 31 (5.6%)0
  • Values in table are frequency (%) for categorical, mean (SD) for normally distributed continuous variables and median (IQR; Q1: first quartile, Q3: third quartile) for non-normally distributed continuous variables.

  • BE, base excess; HCO3, bicarbonate; NCPAP, nasal continuous positive airway pressure; PCO2, partial pressure of carbon dioxide; PO2, partial pressure of oxygen; nHFOV, nasal high-frequency oscillatory ventilation.