Impact of timing on in-patient outcomes of complete repair of tetralogy of Fallot in infancy: an analysis of the United States National Inpatient 2005–2011 database

Table 4 Associations between age at complete repair of TOF and length of stay and postoperative complication for children admitted electively (n = 770)

	Length of stay		Postoperative complication
	Univariate	Multivariate^a	Univariate	Multivariate^b
	β ± SE	β ± SE	OR (95% CI)	aOR (95% CI)
Age at repair	−0.01 ± 0.01	−0.01 ± 0.005	0.99 (0.99–1.00)	1.00 (0.99–1.00)
≤ 30 days	0	0	1	1
31–90 days	−2.87 ± 1.87	−2.94 ± 1.89	0.43 (0.19–0.97)	0.43 (0.19–0.99)
91–180 days	− 3.48 ± 1.82	−3.95 ± 1.77	0.51 (0.25–1.02)	0.58 (0.28–1.18)
> 180 days	−3.43 ± 2.15	−4.29 ± 2.06	0.51 (0.25–1.03)	0.58 (0.27–1.22)

β estimate, SE standard error, OR odds ratio, aOR adjusted OR, CI confidence interval
Multivariate logistic regression was adjusted for variables significant in univariate analysis
Numbers in bold indicates statistically significant (P < 0.05)
^aMultivariate analysis was adjusted for insurance status, gastrostomy tube insertion and bed size of hospital
^bMultivariate analysis was adjusted for heart catheterization and bed size of hospital

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