Table 2.
Demographic characteristics in 3,646 patients transported by ambulance for suspected ACS.
| Patient Characteristic | Mean (SD) or n(%) |
|---|---|
| Age | 59.7 (15.7) years, range 21->90 |
| Sex | |
| Female | 1633(44.8) |
| Race | |
| American Indian or Alaska Native | 5(0.14) |
| Asian | 36(0.99) |
| Black or African American | 1720(47.2) |
| White | 1631(44.7) |
| Multiracial | 7(0.19) |
| Unknown | 247(6.8) |
| Ethnicity | |
| Hispanic | 130(3.6) |
| Non-Hispanic | 3350(91.8) |
| Unknown | 166 (4.6) |
| Primary hospital diagnosis | |
| Any ACS | 662(18.2) |
| STEMI | 452(68.2) |
| NSTEMI | 147(22.2) |
| Unstable angina | 63(9.5) |
| Non-ACS | 2984(81.8) |
| Outcomes within 30 days | |
| Any of the three adverse clinical outcomes below | 691 (19.0) |
| Death | 137 (3.8) |
| Reinfarction | 13 (0.4) |
| New onset HF | 586 (16.1) |
| Return to ED | 1250 (34.3) |
| Rehospitalization | 474 (13.0) |
Each author made significant contributions to the manuscript and provided insights to the revisions. Jessica Zègre-Hemsey conceived of the study idea, made direct contributions to writing the paper, and led the study. Melanie Hogg and Pilar Tochiki extracted hospital data elements and reviewed multiple manuscript drafts. Jamie Crandell conducted statistical analyses, data interpretation, created tables, and reviewed multiple drafts. Len Gettes and Eugene Chung provided expert ECG interpretation and reviewed drafts of the manuscript. Michele Pelter reviewed multiple drafts and provided expertise to the prehospital 12-lead ECG interpretation. Jonathan Studnek and David Pearson provided expert guidance to the conceptualization of the study, manuscript draft recommendations, and ongoing support to conducting research in the prehospital and ED settings. Wayne Rosamond contributed to the overall study conduct, writing of the manuscript drafts, and expertise in EMS systems of care.
This manuscript has not been previously published nor is under consideration for publication elsewhere.