Table 1.

Patient characteristics for ST-elevation Myocardial Infarction emergency department visits in the United States for the years 2006 and 2011. All rates are reported as ST-elevation Myocardial Infarction emergency department visits per 10,000 adults.

Visits (95% CI)
	2006	2007	2008	2009	2010	2011
U.S. STEMI ED visits (n)
	300,466	276,779	263,475	243,471	237,100	227,343
Incidence of STEMI ED visits in U.S. (visits/10,000 adults/year)
	10.1 (9.3, 10.8)	9.2 (8.5, 9.9)	8.7 (8.0, 9.3)	7.9 (7.3, 8.6)	7.7 (7.1, 8.3)	7.3 (6.8, 7.8)
Incidence of STEMI ED visits by Age Group (visits/10,000 adults/year)
18–34	0.5 (0.4, 0.5)	0.5 (0.4, 0.6)	0.5 (0.4, 0.5)	0.4 (0.3, 0.4)	0.5 (0.4, 0.5)	0.4 (0.4, 0.4)
35–44	4.1 (3.7, 4.5)	3.9 (3.5, 4.2)	3.8 (3.5, 4.2)	3.3 (3.0, 3.6)	3.4 (3.0, 3.7)	3.3 (3.0, 3.6)
45–54	11.7 (10.7, 12.6)	10.9 (10.0, 11.8)	10.3 (9.4, 11.2)	9.7 (8.9, 10.5)	9.4 (8.6, 10.2)	9.0 (8.3, 9.8)
55–64	20.8 (19.1, 22.5)	18.5 (17.0, 20.1)	17.7 (16.2, 19.1)	16.3 (14.9, 17.6)	15.6 (14.3, 16.8)	14.7 (13.6, 15.8)
65–74	31.3 (28.8, 33.8)	27.7 (25.5, 30.0)	25.6 (23.6, 27.7)	23.6 (21.8, 25.5)	21.8 (20.1, 23.6)	21.1 (19.5, 22.7)
75–84	47.2 (43.6, 50.8)	42.5 (39.2, 45.9)	38.4 (35.3, 41.6)	34.1 (31.3, 36.8)	32.0 (29.5, 34.6)	29.5 (27.3, 31.6)
85+	83.4 (76.9, 90.0)	73.5 (67.6, 79.4)	67.5 (61.9, 73.1)	58.8 (53.7, 63.8)	55.9 (51.4, 60.5)	49.5 (45.8, 53.2)
Incidence of STEMI ED visits by U.S. Geographic Region (visits/10,000/year)
Northeast	8.8 (7.1, 10.5)	8.1 (6.6, 9.6)	7.8 (6.2, 9.4)	7.3 (5.9, 8.8)	7.1 (5.8, 8.4)	6.8 (5.5, 8.0)
Midwest	12.4 (10.5, 14.3)	11.0 (9.4, 12.7)	9.8 (8.3, 11.3)	9.2 (7.8, 10.6)	9.2 (7.8, 10.7)	8.4 (7.2, 9.7)
South	10.9 (9.6, 12.3)	10.0 (8.7, 11.3)	9.6 (8.3, 10.8)	8.5 (7.4, 9.6)	8.0 (6.9, 9.1)	7.9 (7.0, 8.8)
West	7.5 (6.2, 8.7)	6.9 (5.7, 8.1)	6.9 (5.8, 7.9)	6.3 (5.2, 7.3)	6.1 (5.2, 7)	5.8 (5.0, 6.5)

Note: ED, emergency department; STEMI, ST-elevation myocardial infarctions