[Retracted] Comparison of Ventilator-Associated Pneumonia and Surgical Site Infection between Two Methods of Tracheostomy

Table 2

Multivariate analyses for ventilator-associated pneumonia (VAP) and surgical site infection (SSI).

Characteristic	SSI		VAP
	Hazard ratio (95% CI)	value	Hazard ratio (95% CI)	value
Age (yrs)				0.005
<60			Reference
≥60			3.63 (1.46-9.00)
Sex				0.61
Male			Reference
Female			1.25 (0.53-2.92)
Charlson comorbidity index		0.003		<0.001
0-1	Reference		Reference
≥2	3.18 (1.47-6.91)		6.93 (3.06-15.69)
Smoking				0.008
No			Reference
Yes			2.20 (1.23-3.91)
Type of tracheostomy		0.01
Surgical	Reference
Percutaneous	0.33 (0.14-0.79)
Cluster nursing		<0.001		0.01
No	Reference		Reference
Yes	0.13 (0.04-0.36)		0.42 (0.22-0.81)