Table I.

Patient characteristics and location at time of non-invasive cardiac stress testing, by test type

	All (N=80,676)	Nuclear Stress MPI (N=43,700)	Stress ECHO (N=16,879)	ETT (N=20,009)	P-value
Age (mean, interquartile range)	51.5 (46, 57)	52.1 (47, 57)	50.8 (45, 56)	50.7 (45, 56)	<.001
Female (%)	53	54	57	46	<.001
Diabetes	9.9	12.0	7.0	7.9	<.001
Hypertension	38.9	43.3	34.5	33.2	<.001
Hyperlipidemia	38.1	40.7	34.1	36.0	<.001
Cerebrovascular Disease	2.4	3.0	2.1	1.6	<001
Peripheral Vascular Disease	1.9	2.2	1.2	1.5	<.001
Chronic Pulmonary Disease	7.4	8.1	6.4	6.7	<.001
Hospital Referral Region* (%)	(% of Total)	(% of Stress Tests in Referral Region)†			<.001
Atlanta (2,647)	3	57	9	34
Charlotte (914)	1	49	34	17
Columbus (1,814)	2	64	19	17
Dallas (4,037)	5	32	47	21
Denver (1,138)	1	50	10	40
East Long Island (1,591)	2	65	10	25
Ft. Lauderdale (1,164)	1	79	11	10
Ft. Worth (1,684)	2	38	39	23
Houston (5,320)	7	61	3	36
Kansas City (1,419)	2	38	51	11
Los Angeles (962)	1	21	31	48
Manhattan (1,375)	2	48	19	33
Miami (1,340)	2	87	7	6
Milwaukee (1,339)	2	54	24	21
Nashville (893)	1	65	6	29
Orlando (1,987)	2	73	3	23
Phoenix (1,437)	2	50	14	36
Raleigh (942)	1	53	39	8
St. Louis (2,812)	4	55	33	12
Tucson (993)	1	17	24	59
ALL OTHERS (44,744)	56	55	21	24

MPI = myocardial perfusion imaging; ECHO = echocardiography; ETT = exercise treadmill testing.

^*Data unavailable for 124 patients.

^†May not sum to 100 due to rounding.