Table 3.

Univariate and multivariate regression analysis for risk factors of one-year mortality and quality of life.

Predictors	OR (95% CI)	p a	OR (95% CI)	p b
A: one-year mortality
Age	1.036 (1.017–1.043)	0.000∗∗	1.025 (1.011–1.039)	0.001∗∗
APACHE II	1.097 (1.067–1.129)	0.000∗∗	—	—
SOFA	1.159 (1.102–1.219)	0.000∗∗	—	—
Charlson Comorbidity index	1.068 (1.012–1.126)	0.016∗	—	—
Malignancy	1.770 (1.034–3.030)	0.045∗	—	—
Septic shock	2.327 (1.549–3.495)	0.000∗∗	2.533 (1.525–5.568)	0.000∗∗
Fungus infection	2.213 (1.424–3.167)	0.000∗∗	1.846 (1.160–2.938)	0.010∗
Acute renal failure	3.854 (2.152–6.904)	0.000∗∗	2.914 (1.525–5.568)	0.001∗∗
Cystatin c	1.453 (1.193–1.768)	0.000∗∗	—	—
Anion gap	1.071 (1.031–1.113)	0.000∗∗	1.070 (1.025–1.117)	0.002∗∗
Pulmonary infectionc	2.243 (1.465–3.436)	0.000∗∗	2.547 (1.513–4.288)	0.000∗∗
B: one-year QoL
APACHE II	1.048 (1.008–1.088)	0.017∗	—	—
Chronic heart failure	6.217 (1.343–28.786)	0.019∗	—	—
Pulmonary infectionc	2.939 (1.621–5.329)	0.000∗∗	2.846 (1.530–5.294)	0.004∗∗
Tracheal extubation in 24 hd	0.231 (0.083–0.645)	0.005∗∗	0.330 (0.110–0.989)	0.048∗
Mechanical ventilation days	1.036 (1.009–1.064)	0.008∗∗	—	—

A: n = 435. Variables eliminated from backward selection.

B: n = 209. Variables eliminated from backward selection.

^aResults of univariate analysis.

^bResults of multivariate analysis.

^cPulmonary infection was defined as pulmonary infection identified during the whole ICU stay period.

^d n = 188; patients without mechanical ventilation were excluded.

^∗ p < 0.05.  ^∗∗ p < 0.01.