Table 2.

Demographic characteristics of patient populations

Characteristic	Nonischemic cardiomyopathy		Ischemic cardiomyopathy
	No. of studies reporting	Range across studies, %*	No. of studies reporting	Range across studies, %*
Age, yr	5	33.5–53.9	4	59.5–73
Male sex	5	25–86	4	0–85
Length of follow-up, d	4	143–426	3	152–414
Comorbidities
Diabetes	2	8–30	2	18–74
Hypertension	2	8–85	1	91
Chronic renal insufficiency	3	11–29	3	0–70
Dialysis	1	2	1	6
Chronic obstructive pulmonary disease	1	12	1	32
Previous stroke/transient ischemic attack	1	17	0	12
Peripheral arterial disease	1	11	1
History of cardiac surgery	4	10–14	3	43–100
Creatinine level, mg/dL	3	0.8–1.35	2	0.8–1.49
Mechanically ventilated	1	3	1	9

^*Except where noted otherwise.