Table 2.

Subgroup Analysis in Patients With or Without Heart Failure After Matching^a

	Hyperkalemia		Normokalemia		Relative Risks
	No. of Events	%	No. of Events	%	Hazard Ratio	95% CI
Overall	n=5859		n=5859
Death	745	12.7	172	2.9	4.40	3.74-5.18
Hospitalization for cardiac eventsb	278	4.7	140	2.4	1.95	1.59-2.39
Hospitalization for HF	581	9.9	114	1.9	5.09	4.17-6.21
Renal replacement therapy introduction	402	6.9	52	0.9	7.54	5.73-9.91
With HF	n=1548		n=1575
Death	308	19.9	81	5.1	4.05	3.18-5.16
Hospitalization for cardiac eventsb	141	9.1	68	4.3	2.11	1.58-2.81
Hospitalization for HF	371	24.0	86	5.5	4.67	3.71-5.89
Renal replacement therapy introduction	80	5.2	17	1.1	4.60	2.78-7.62
Without HF	n=4311		n=4284
Death	437	10.1	91	2.1	4.81	3.83-6.03
Hospitalization for cardiac eventsb	137	3.2	72	1.7	1.84	1.38-2.45
Hospitalization for HF	210	4.9	28	0.7	7.17	4.84-10.62
Renal replacement therapy introduction	322	7.5	35	0.8	8.93	6.38-12.51

^aHF = heart failure.

^bCardiac event includes myocardial infarction, arrhythmia, and cardiac arrest.