Preditores Mild BPD (n=61) Mild BPD (n=61) Moderate BPD (n=43) Moderate BPD (n=43) Severe BPD (n=53) Severe BPD (n=53)
Percentage RRaj (CI 95%) Percentage RRaj (CI 95%) Percentage RRaj (CI 95%)
Maternal systemic arterial hypertension a 34.4% 1.0 (0.62; 1.92) 33.3% 1.0 (0.53; 2.08) 22.6% 0.9 (0.50; 1.91)
Maternal smoking b 15.25% 1.0 (0.50;2.14) 13.9% 0.9 (0.38;2.21) 17.3% 0.9 (0.43; 1.93)
Chorioamnionitis 17.7% 0.9 (0.45; 1.75) 23.2% 1.2 (0.58; 2.54) 26.4% 1.0 (0.55; 1.92)
Antenatal corticosteroids 83.6 0.7 (0.37; 1.54) 90.6% 1.8 (0.63; 5.35) 79.2% 1.0 (0.50; 2.08)
Male 45.9% 1.0 (0.61; 1.72) 46.5% 1.0 (0.53; 1.82) 56.6% 1.2 (0.70; 2.11)
SGA 16.3% 0.7 (0.37; 1.53) 23.2% 1.3 (0.63; 2.82) 20.7% 1.7 (0.85; 3.54)
Need for surfactant 78.3% 1.8 (0.94; 3.36) 88.3% 4.1 (1.59; 10.95) 81.1% 1.2 (0.60; 2.57)
Patent ductus arteriosus 37.7% 0.6 (0.38; 1.18) 65.1% 2.0 (1.01; 3.99) 64.1% 1.6 (0.86; 2.99)
Early sepsis 37.7% 1.1 (0.64; 1.83) 53.4% 0.7 (0.38; 1.29) 83% 2.7 (1.31; 5.55)
Late sepsis up to the 14th day of life 34.4% 0.9 (0.53; 1.53) 41.8% 1.2 (0.63; 2.18) 32.5% 1.4 (0.80; 2.41)
Necrotizing enterocolitis up to the 14th day of life 8.1% 0.7 (0.28; 1.80) 4.6% 0.4 (0.10; 1.70) 18.8% 1.3 (0.66; 2.67)
FiO2>30% on the 14th day of life c 16.6% 0.4 (0.21; 0.89) 30.5% 2.0 (0.97; 4.08) 51.4% 3.2 (1.63; 6.26)
Nasal oxygen catheter 50% 3.2 (1.40; 7.53) 10,7% 3.3 (0.56; 20.22) 7.1% 4.1 (0.37; 45.21)
CPAP/ NIPPV 41.2% 2.5 (1,13; 5,71) 27.4% 8.2 (1.82; 36.81) 15.7% 7.8 (0.96; 63.14)
MV 21.2% 1.2 (0.48; 3.07) 29.7% 8.8 (1.95; 40.16) 43.7% 18.2 (2.38; 139.32)
HFV 13.0 0.7 (0.18; 2.82) 21.7 6.4 (1.17; 35.19) 60.8 24.4 (3.07; 194.14)