Effect of ventilator-associated tracheobronchitis on outcome in patients without chronic respiratory failure: a case–control study

Table 5 Factors associated with duration of mechanical ventilation longer than median (14 days) in patients with (cases) and without (controls) ventilator-associated tracheobronchitis

Factor	Univariate analysis			Multivariate analysis
	Number of patients (n = 110)	Number of patients with MV duration ≥ 14 days (%)	P	OR (95% CI)	P
Renal failure on ICU admission
Yes	24	18 (75)	0.002	4.9 (1.6–14.6)	0.004
No	86	34 (39)
Tracheostomy
Yes	17	13 (76)	0.009	4.0 (1.1–14.5)	0.032
No	93	39 (41)
VAT related to multidrug-resistant bacteria
Yes	31	22 (70)	0.002	-	-
No	79	30 (37)
VAT
Yes	55	35 (63)	0.001	3.5 (1.5–8.3)	0.004
No	55	17 (30)

CI, confidence interval; ICU, intensive care unit; MV, mechanical ventilation; OR, odds ratio; VAT, ventilator-associated tracheobronchitis.

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