Table 3.

Factors associated with ICU mortality

Factors	Univariate analysis			Multivariate analysis
	Odds ratio	95% CI	p	Odds ratio	95% CI	p
APACHE II score of ≥20	3.2	1.6–6.5	0.001	1.7	0.9–2.0	0.19
Septic shock	2.1	1.0–4.2	0.05	0.4	0.1–0.6	0.55
Metabolic acidosis	2.4	1.2–5.0	0.01	0.8	0.3–1.2	0.38
Creatinine of ≥2 mg/dL	2.9	1.4–5.8	0.002	0.6	0.2–1.0	0.43
Abnormal Ka+	2.0	1.1–4.0	0.04	2.7	0.9–3.4	0.1
Requirement for vasopressor	26.6	3.5–200	<0.001	5.8	3.2–8.4	0.02
Mechanical ventilator	19.6	2.6–148.4	<0.001	1.5	0.5–2.6	0.27
Renal replacement therapy	9.4	4.4–20.3	<0.001	7.9	6.4–9.5	0.005

p-<0.05 indicates statistical significance.

Abbreviations: APACHE II score, Acute Physiology and Chronic Health Evaluation II score; K_a⁺, average potassium; ICU, intensive care unit; CI, confidence interval