Administrative and Claims Data Help Predict Patient Mortality in Intensive Care Units by Logistic Regression: A Nationwide Database Study

Table 3

Univariate analysis assessing the association between the CCI with/without additional variables and mortality.

Categorical variable	OR	95% CI	value
CCI	1.18	(1.10–1.26)	<0.0001
Sex	0.95	(0.71–1.28)	0.736
Age	1.03	(1.02–1.04)	<0.0001
Division	1.09	(0.74–1.60)	0.658
Operation	0.48	(0.31–0.73)	0.001
Hemodialysis	1.36	(0.77–2.39)	0.291
Mechanical ventilation	6.53	(4.72–9.03)	<0.0001
Number of outpatient visits	0.99	(0.99–0.99)	0.008
Number of inpatient visits	1.01	(0.94-1.08)	0.863

<0.05; <0.01; <0.001. Abbreviations: CCI: Charlson Comorbidity Index; OR: odds ratio; CI: confidence interval.