Construction and Validation of a Predictive Model for the Risk of Ventilator-Associated Pneumonia in Elderly ICU Patients

Table 2

Multivariate analysis of VAP risk in elderly ICU patients on MV.

Risk factors	b	Wald		OR	95% CI
					Lower limit	Upper limit
Length of ICU stay	0.473	3.984	0.046	1.604	1.009	2.551
Surgery	1.937	71.815	<0.001	6.937	4.432	10.857
COPD	−1.950	6.929	0.008	0.142	0.033	0.608
CRP	1.092	24.658	<0.001	2.981	1.937	4.587
PCT	−0.663	7.156	0.007	0.515	0.317	0.837
Number of reintubations	0.839	3.921	0.048	2.313	1.009	5.350
Constant	−4.231	76.976	<0.001	0.015	—	—

VAP, ventilator-associated pneumonia; ICU, intensive-care unit; MV, mechanical ventilation; OR, odds ratio; CI, confidence interval; COPD, chronic obstructive pulmonary disease; CRP, C-reactive protein; PCT, procalcitonin.