| Characteristic | N | % |
|---|---|---|
| Gender | ||
| Male | 10,910 | 60.5 |
| Female | 7116 | 39.5 |
| Race | ||
| White non-Hispanic | 12,586 | 69.8 |
| Black non-Hispanic | 1858 | 10.3 |
| Hispanic | 2081 | 11.5 |
| Asian | 1011 | 5.6 |
| Other | 490 | 2.6 |
| Age at 9/11 | ||
| 0–17 | 223 | 1.2 |
| 18–24 | 578 | 3.2 |
| 25–44 | 9185 | 51.0 |
| 45–64 | 7625 | 42.3 |
| 65+ | 414 | 2.3 |
| Education | ||
| High School Diploma or less | 3989 | 22.2 |
| Some College | 4570 | 25.4 |
| College Degree/Post grad | 9431 | 52.4 |
| PTSD at Wave 1 | ||
| Yes | 2666 | 14.9 |
| No | 15,201 | 85.1 |
| Exposed to Dust Cloud | ||
| Yes | 10,262 | 57.2 |
| No | 7675 | 42.8 |
| Injured on 9/11 | ||
| Yes | 2641 | 14.8 |
| No | 15,261 | 85.2 |
| Witnessed Traumatic Events on 9/11 | ||
| Yes | 6823 | 38.6 |
| No | 10,855 | 61.4 |