Table 1.

Characteristics of study population (n=47,089)

Characteristics	Value
Mean age (SD)	49 (22)
Male	21,573 (46)
Discharge diagnosis hyperkalemia	772 (1.6)
ED disposition
Median ED LOS (IQR, hr)	7.1 (4.8–10.9)
Admitted	19,014 (40.4)
Admitted to ICU	1,252 (2.7)
Died at index visit	489 (1.0)
Abnormal potassium level (mEq/L)	4,271 (9.1)
Low (< 3.5)	2,574 (5.5)
Normal (3.5–5.0)	42,818 (90.9)
Minimally elevated (5.1–5.4)	1,058 (2.2)
Moderately elevated (5.5–6.0)	448 (1.0)
Severely elevated (> 6.0)	191 (0.4)

Values are presented as number (%) unless otherwise indicated.

D, standard deviation; ED, emergency department; LOS, length of stay; IQR, interquartile range; ICU, intensive care unit.