Table 2.

Logistic Regression Results for ICU Mortality.

Variable	OR	CI	P	Bootstrap SE	Bootstap CI
VA-LRTI model
SAPS 2	1.02	1.01-1.03	<.001	0.005	1.01-1.03
Barthel index	0.99	0.98-1.00	.06	0.003	0.98-1.00
Worsening gas exchange	1.46	0.82-2.60	.19	0.306	0.79-2.65
VA-LRTI	1.07	0.62-1.83	.80	0.280	0.61-1.85
VAT/VAP model
SAPS 2	1.02	1.01-1.03	<.001	0.005	1.01-1.03
Barthel index	0.99	0.98-1.00	.06	0.003	0.98-1.00
Worsening gas exchange	1.36	0.74-2.50	.31	0.325	0.71-2.56
VAT	0.94	0.49-1.77	.87	0.338	0.48-1.83
VAP	1.30	0.61-2.74	.49	0.399	0.59-2.84

Abbreviations: CI, confidence interval; ICU, intensive care unit; OR, odds ratio; SAPS 2, Simplified Acute Physiology Score 2; SE, standard error; VA-LRTI, ventilator-associated lower respiratory tract infections; VAP, ventilator-associated pneumonia; VAT, ventilator-associated tracheobronchitis.