Table 4.

Univariate risk factor analysis (n = 46)

	Odds ratio	95% CI	P value
Gross A/B vs C	0.47	(0.08‐2.74)	.87
Gross D vs C	0.00	(0.00‐Inf)	⋯
Gross E vs C	0.00	(0.00‐Inf)	⋯
Extubation Day 2‐4 vs Day 1 (n = 45)	1.82	(0.50‐6.68)	.62
Extubation Day 5+ vs Day 1 (n = 45)	1.00	(0.14‐7.10)	⋯
Birth weight, kg	0.35	(0.16‐0.79)	.01*
Anastomotic leak	0.94	(0.14‐6.26)	.95
Abnormal reflux index (n = 34)	0.82	(0.21‐3.22)	.77
Episodes of general anesthesia (n = 43)	0.89	(0.80‐1.01)	.06
Age at follow up	1.10	(0.95‐1.27)	.22
Pneumonia (n = 43)	0.71	(0.19‐2.69)	.62

Note: Patients excluded from the risk factor analyses: the pulmonary function of one patient could not be evaluated due to incomplete tests, one patient received a tracheostomy and two patients were considered outliers regarding episodes of general anesthesia (27 and 53 episodes); 3 cases of missing data for pneumonia and 12 for abnormal reflux index.

Abbreviation: CI, confidence interval.

^*statistical significance.