Table 1. Selected Characteristics of Patients With STEMI or STEMI Equivalent by Mode of Presentation.
| Characteristics | Patients, No. (%)a | ||
|---|---|---|---|
| EMS arrival (n = 57 303) | Walk in (n = 32 483) | Transfer (n = 25 085) | |
| Age, median (IQR), y | 64 (55-73) | 61 (53-70) | 62 (54-71) |
| Men | 39 468 (68.9) | 24 177 (74.4) | 18 003 (71.8) |
| Women | 17 835 (31.1) | 8306 (25.6) | 7082 (28.2) |
| Race and ethnicity | |||
| American Indian/Alaska Native | 233 (0.4) | 153 (0.5) | 234 (0.9) |
| Asian | 2210 (3.9) | 1507 (4.6) | 562 (2.2) |
| Black | 7085 (12.4) | 3311 (10.2) | 2101 (8.4) |
| Hispanic | 4071 (7.1) | 3183 (9.8) | 1976 (7.9) |
| Native Hawaiian/Pacific Islander | 169 (0.3) | 88 (0.3) | 49 (0.2) |
| Non-Hispanic White | 41 690 (72.8) | 23 315 (71.8) | 19 520 (77.8) |
| Not specified | 1845 (3.2) | 926 (2.9) | 643 (2.6) |
| Heart rate documented on first medical contact, median (IQR), /min | 78 (63-94) | 81 (69-96) | 80 (67-95) |
| Systolic blood pressure on first medical contact, median (IQR), mm Hg | 138 (113-161) | 151 (131-172) | 147 (125-168) |
| Cardiac arrest prior to arrival, No./total No. (%) | 5551/53 293 (10.4) | NA | NA |
| Heart failure documented on first medical contact, No./total No. (%) | 4378/52 226 (8.4) | 1884/29 731 (6.3) | 1830/22 437 (8.2) |
| Cardiogenic shock documented on first medical contact, No./total No. (%) | 5277/52 196 (10.1) | 918/29 705 (3.1) | 1435/22 431 (6.4) |
| History of smoking, No./total No. (%) | 21 771/54 822 (39.7)b | 11 632/31 187 (37.3)b | 10 059/24 131 (41.7)b |
| Destination prearrival alert or notificationc | 41 620 (72.6) | NA | NA |
Abbreviations: EMS, emergency medical services; NA, not applicable; STEMI, ST-segment elevation myocardial infarction.
a
Numeric values are reported as No. (%) unless otherwise specified.
b
Regarding history of smoking, data were missing for 2481 (4.3%) patients who arrived by EMS, 1296 (4.0%) who walked in, and 954 (3.8%) who were transferred.
c
EMS notified hospital of incoming STEMI patient prior to arrival.