. Author manuscript; available in PMC: 2014 Feb 1.

Published in final edited form as: Am J Transplant. 2012 Dec 27;13(2):383–389. doi: 10.1111/ajt.12017

Table 3.

Risk factors for CAS requiring dilation after transplant N=467

Univariate analysis
	HR	95% CI	P value
Length of stay	1.01	1.01–1.02	0.0006
Postoperative tracheostomy	3.67	1.98–6.79	<0.0001
Ischemic time (n=387)	1.00	0.99–1.00	0.64
Acute rejection ratio ^*	1.09	0.71–1.67	0.69
Fungal infection ^*	2.12	1.27–3.55	0.004
Bacterial infection ^*	1.70	0.96–3.01	0.07
Mycobacterial infection ^*	1.20	0.72–2.00	0.48
Viral infection ^*	1.62	0.94–2.79	0.08

Multivariable analysis
	HR	95% CI	P value
Length of stay	1.01	1.00–1.01	0.09
Postoperative tracheostomy	2.92	1.47–5.80	0.002
Fungal infection ^*	2.01	1.20–3.37	0.0083

Time dependent predictor and considered only before dilation