Table 3.

Clinical Outcomes of Inpatient versus Outpatient Management for Severe Hyperkalemia without Concurrent Acute Conditions or Life-Threatening ECG Abnormalities: before and after Overlap Weighting.

	Setting	Participants, n	Events, n	Unweighted OR, 95% CI	Weighted OR, 95% CI
All-cause mortality	Inpatient	99	6	1 [reference]	1 [reference]
	Outpatient	275	5	0.29 (0.09-0.96)	1.39 (0.31-6.26)
Hyperkalemia recurrence	Inpatient	99	4	1 [reference]	1 [reference]
	Outpatient	275	27	2.59 (0.88-7.59)	4.82 (1.04-22.44)

Notes: Weighted estimates were obtained using propensity score–based overlap weighting, adjusted for age, sex, body mass index, diabetes mellitus, heart failure, coronary artery disease, stroke, malignancy, visit pattern, do-not-resuscitate code, use of renin–angiotensin system inhibitors, mineralocorticoid receptor antagonists, beta-blockers, loop diuretics, bicarbonate, and potassium binders, as well as laboratory values at the time of hyperkalemia (potassium, creatinine, estimated glomerular filtration rate, white blood cell count, hemoglobin, and platelet), 3-month increase in potassium level, and creatinine ratio (hyperkalemia / 3 months prior). No deaths directly attributable to hyperkalemia were observed in either group.

CI: confidence interval; ECG: electrocardiographic; OR: odds ratio.