Table 4. Multivariate regression analysis for mortality risk factors.

Variables	OR (95% CI)	P value
Age, ≥ 70 yr	18.264 (3.419–97.573)	0.001
Malignancy	8.789 (1.436–53.788)	0.019
Body temperature, > 37.5°C	21.883 (3.813–125.584)	0.001
Diabetes mellitus	5.451 (1.544–19.253)	0.001

OR = odds ratio, CI = confidence interval.