Regional Variation on Rates of Bronchopulmonary Dysplasia and Associated Risk Factors

Table 4

Multivariate analysis predicting BPD for the entire cohort controlled by city of birth 𝑁=212.

Variables	OR	95% CI
Preterm premature rupture of membranes	1.17	1.05	1.31
Ventilatory support (nCPAP + MV)	1.18	1.01	1.38
Use of surfactant (rescue)	1.63	1.28	2.08
Use of surfactant (no surfactant)	1.37	1.12	1.67
City of birth (Bogotá)^1	1.9	1.46	2.49
FIO21 (median value)	1.58	1.11	2.26
PDA	1.14	1.01	1.28
Sepsis	1.12	1.01	1.26

¹OR adjusted by interaction term between Bogota and FIO₂.