Table 4. 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+ <3.5	1.37 (0.96–1.96)	0.079	1.47 (1.00–2.15)	0.048
K+ 3.5–5.0 (ref.)**	-	-	-	-
K+ >5.0	1.51 (0.92–2.47)	0.10	0.61 (0.35–1.08)	0.09

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

**The reference group is normokalemia: 3.5–5.0mmol/L.