Demographic and EMS-related employment characteristics of sample (n=13 218)
| Characteristic | n (%) |
| Age, median (IQR) | 36 (29–47) |
| Age category (years) | |
| <30 | 3591 (27) |
| 30–39 | 4100 (31) |
| 40–49 | 2972 (22) |
| ≥50 | 2555 (19) |
| Missing | 0 |
| Sex | |
| Female | 3682 (28) |
| Male | 9508 (72) |
| Missing or not reported | 28 |
| Race/ethnicity | |
| Non-Hispanic white | 11 354 (87) |
| Other* | 1650 (13) |
| Missing or not reported | 214 |
| Education level | |
| High school/GED | 1698 (13) |
| Some college | 4149 (31) |
| Associate degree | 2999 (23) |
| Bachelor’s degree | 3446 (26) |
| Graduate degree | 925 (7) |
| Missing | 1 |
| EMS certification level | |
| BLS | 5532 (42) |
| ALS | 7686 (58) |
| Missing | 0 |
| EMS experience (years) | |
| <3 | 4211 (32) |
| 3–7 | 4132 (31) |
| ≥8 | 4851 (38) |
| Missing | 24 |
| Employment status | |
| Part-time (<40 hours/week) | 3513 (27) |
| Full time (≥40 hours/week) | 9599 (73) |
| Missing or not reported | 106 |
| Community size of main EMS agency | |
| Rural | 1583 (12) |
| Urban | 11 435 (88) |
| Missing or not reported | 200 |
| Agency type of main EMS agency | |
| Fire | 5102 (39) |
| Third service (municipal, non-fire) | 1748 (13) |
| Private | 3209 (24) |
| Hospital | 1842 (14) |
| Other | 1253 (10) |
| Missing or not reported | 64 |
| Service type of main EMS agency | |
| Any 9-1-1 response | 11 108 (84) |
| Other | 2061 (16) |
| Missing or not reported | 49 |
*Other race/ethnicity consists of those who selected black, non-Hispanic; Hispanic; non-Hispanic other.
ALS, advanced life support; BLS, basic life support; EMS, emergency medical services; GED, General Education Diploma.