Epidemiology and clinical outcome of virus-positive respiratory samples in ventilated patients: a prospective cohort study

Table 4 Factors associated with survival in 122 patients with respiratory disorder (reason for admission or associated symptoms at admission).

Variable	Univariate Cox model		Multivariate Cox model^a
	Hazard ratio (95% confidence interval)	P value	Adjusted hazard ratio (95% confidence interval)	P value
Age	1.022 (0.995–1.050)	0.11
Male	0.630 (0.334–1.187)	0.15
Chronic obstructive pulmonary disease	0.619 (0.095–1.296)	0.20
Acute Physiology and Chronic Health Evaluation type II score	1.025 (0.996–1.055)	0.093
Simplified Acute Physiology Score II	1.015 (0.999–1.032)	0.072	1.012 (0.995–1.029)	0.16
Logistic organ dysfunction system	1.020 (0.948–1.098)	0.60
Admission for cardiogenic shock/cardiac arrest	2.588 (1.146–5.844)	0.022	2.106 (0.924–4.802)	0.08
Virus-positive sample	0. 233 (0.083–0.653)	<0.003	0.273 (0.096–0.777)	<0.006

^aStepwise selection of variables associated with survival with P < 0.10 in the univariate analysis.

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