Table 1.
Cohort characteristics
| Biomarkers 10/2001 to 3/2002 | Biomarkers 12/2013 to 10/2015 | Source population | |
|---|---|---|---|
| N = 816 | N = 983 | N = 9566 | |
| Age on 9/11 | 41.4 ± 7.5 | 42.0 ± 7.8 | 40.2 ± 7.4 |
| Race, n (%) | |||
| White | 780 (95.6) | 904 (92.0) | 9012 (94.2) |
| African American | 12 (1.5) | 39 (4.0) | 223 (2.3) |
| Hispanic | 23 (2.8) | 36 (3.7) | 304 (3.2) |
| Other | 1 (0.1) | 4 (0.4) | 27 (0.3) |
| Smoking status, n (%) | |||
| Never | 680 (83.3) | 615 (62.6) | 6406 (67.0) |
| Ever | 136 (16.7) | 368 (37.4) | 3160 (33.0) |
| World Trade Center | arrival time, n (%) | ||
| Morning of 9/11 | 130 (15.9) | 174 (17.7) | 1560 (16.3) |
| Afternoon of 9/11 to 9/12 | 626 (76.7) | 697 (70.9) | 6849 (71.6) |
| 9/13/2001 or later | 60 (7.4) | 112 (11.4) | 1157 (12.1) |
| FEV1% predicteda | 98.6 ± 14.5 | 97.2 ± 14.6 | 97.0 ± 13.7 |
| FEV1 decline ml/yearb | 38.4 ± 26.6 | 36.1 ± 23.4 | 37.3 ± 28.9 |
a
First post‐9/11 measurement.
b
Between 9/11/2001 and 9/10/2020.