Table 3. Associations between K⁺ levels and the outcome of hospitalization or death.

K+ levels (mmol/L)	Crude OR (95% CI)	p-value	Adjusted OR (95% CI)*	p-value
K+ <4.0	0.75 (0.59–0.95)	0.015	0.89 (0.69–1.15)	0.38
K+ 4.0–5.0 (ref.)**	-	-	-	-
K+ >5.0	1.25 (0.75–2.07)	0.40	0.68 (0.39–1.17)	0.16

*Model adjusted for age, gender, estimated glomerular filtration rate, hemoglobin and thiazide diuretics.

**The reference group is normokalemia: 4.0–5.0mmol/L.