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Table 1 Patient characteristics in the neonatal period, shown as means with SDs (in brackets) or as numbers with percentages (%).

From: Development of lung function in very low birth weight infants with or without bronchopulmonary dysplasia: Longitudinal assessment during the first 15 months of corrected age

  Without BPD With BPD p-value
  N = 26 N = 29  
Gestational age (weeks) 29.08 (2.12) 26.41 (2.19) < 0.001
Birth weight (g) 1124.1 (248.3) 815.7 (243.1) < 0.001
Birth weight < 1,000 g 7 (27%) 25 (86%) < 0.001
Fetal lung maturation1) 14/19 (74%) 12/17 (71%) 1.000
Surfactant administration1) 18/20 (90%) 18/20 (90%) 1.000
Mechanical ventilation 15 (58%) 29 (100%) < 0.001
Mechanical ventilation for ≥ 7 d 2 (8%) 16 (55%) < 0.001
  1. Statistically significant p-values are shown in bold
  2. 1) Total number is reduced because the some data of outpatients were incomplete