Table 4:

Univariate analysis results identifying risk factors for mortality, reoperation and residual symptoms

Variable	Mortality	P-value	Reoperation	P-value	Residual symptoms	P-value
	(N = 371)		(N = 371)		(N = 360)
Neonate		0.59		0.37		0.008
Yes	1/18		0/18		2/18
No	11/353		15/353		18/342
Male		0.76		0.38		0.83
Yes	8/232		11/232		14/225
No	4/139		4/139		6/135
Complete vascular ring		0.005		0.45		<0.001
Yes	1/229		8/229		10/228
No	11/142		7/142		10/132
Tracheomalacia		0.39		<0.001		0.014
Yes	1/68		9/68		9/67
No	11/303		6/303		11/293
Complete tracheal ring		<0.001		1.00		0.055
Yes	7/52		2/52		4/45
No	5/319		13/319		16/315
Concomitant cardiac defect		0.011		0.79		0.004
Yes	11/163		7/163		11/153
No	1/208		8/208		9/207