Document Classification

Section Type: METHODS

Text: From December 2011 to March 2013, 107 preterm infants with RDS who received intubation-pulmonary surfactant (PS) - extubation in our NICU were randomly divided (by means of random number table) into three groups based on the primary mode of ventilation : nasal continuous positive airway pressure [NCPAP, n = 39, male/female ratio was 27/12, mean gestational age (GA) was (32. 0 2. 1) weeks, mean birth weight (BW) was (1752 457) g], bi-level positive airway pressure [BiPAP, n = 35, male/female ratio was 25/10, GA was (31. 4 2. 0) weeks, BW was (1530 318) g], and synchronized bi-level positive airway pressure [SBiPAP, n = 33, male/female rate was 25/8, GA was (31. 5 2. 2) weeks, BW was (1622 447) g].