Table 1.

Demographic characteristics in older adults with acute myocardial infarction by whether they had concomitant heart failure during index admission in Premier Healthcare Database from 2000 to 2016.

Variable Name	Total (n=468,654)	Heart Failure (n=42,946)	No Heart Failure (n=425,708)	P-Value
Age, mean (SD)	82.3 (4.7)	83.2 (4.7)	82.2 (4.7)	<0.001
Age>85, %	36.0	43.8	35.2	<0.001
Male, %	46.8	43.3	47.2	<0.001
White, %	75.1	76.1	75.1	<0.001
Hispanic, %	12.9	11.4	13.0	<0.001
Admission Source
Emergency Department, %	40.4	43.7	40.0	<0.001
Non-Healthcare Facility, %	35.9	38.9	35.6	<0.001
Transfer, %	14.5	6.2	15.4	<0.001
Admission Type
Emergent, %	72.2	79.8	71.4	<0.001
Urgent, %	20.5	14.2	21.2	<0.001
Elective, %	6.4	5.3	6.5	<0.001
Comorbidities
Hypertension, %	76.5	88.0	75.4	<0.001
Diabetes Mellitus, %	30.7	43.3	29.5	<0.001
Diabetes Mellitus with Complications, %	6.9	15.5	6.1	<0.001
Valvular Heart Disease, %	4.0	23.5	2.0	<0.001
Pulmonary Circulation Disorder, %	1.3	9.0	0.5	<0.001
Peripheral Vascular Disease, %	17.5	27.9	16.5	<0.001
Paraplegia, %	2.9	5.3	2.6	<0.001
Neurologic Disorder, %	11.0	17.1	10.4	<0.001
Chronic Lung Disease, %	25.4	43.6	23.6	<0.001
Hypothyroidism, %	17.4	23.9	16.8	<0.001
Renal Failure, %	23.9	44.2	21.9	<0.001
Coagulopathy, %	6.6	11.7	6.1	<0.001
Obesity, %	6.8	10.7	6.4	<0.001
Weight loss, %	4.6	11.3	4.0	<0.001
Electrolyte disorder, %	31.1	56.0	28.6	<0.001
Blood loss, %	2.3	5.7	2.0	<0.001
Iron deficiency anemia, %	27.2	51.3	24.7	<0.001
Psychiatric disorder, %	2.4	4.6	2.1	<0.001
Depression, %	8.7	17.0	7.8	<0.001
Claims-based Frailty Indexα, %	19.1	59.3	15.1	<0.001
PCI, %	29.8	14.9	31.4	<0.001
CABG Surgery, %	7.3	4.6	7.6	<0.001

Abbreviations: AIDS = acquired immune deficiency virus; PCI = Percutaneous coronary intervention; CABG = coronary artery bypass surgery.

^αFrailty was defined according to the claims-based frailty index derived from inpatient and outpatient data from 6 months prior to the acute myocardial infarction admission.