Table 6 Univariate analysis of clinical variables influencing the risk of BPD

Gestational age

0.624

0.45–0.867

0.005**

Sex (male gender)

0.667

0.281–1.584

0.3

Birth weight (g)

0.999

0.997–1.001

0.2

Duration of hospitalization

1.12

1.064–1.18

0.001**

Mode of delivery

0.96

0.336–2.739

0.9

Duration O₂

1.255

1.139–1.382

0.001**

Mechanical ventilation

36.771

10.665–126.78

0.001**

Duration of MV

1.503

1.125–2.009

0.006**

Surfactant

5.014

1.797–13.99

0.002**

Inhaled steroid duration

1.277

1.143–1.427

0.001**

Early onset sepsis

1.3

0.54–3.0

0.6

Late onset sepsis

14.6

1.81–117.6

0.01*

Patent ductus arteriosus

4.879

1.907–12.48

0.001**

Pneumothorax

86.538

10.684–700.97

0.001**

Intraventricular hemorrhage

6.304

2.374–16.739

0.001**

Necrotizing enterocolitis

4.348

1.481–12.761

0.007**