Table 1.
Characteristics of the subjects in this study, unadjusted and adjusted analyses.
| All subjects (n=1180) | FEV1>LLN (n=749) | FEV1<LLN (n=431, 36.5%) | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| n or mean | % or SD | n or mean | % or SD | n or mean | % or SD | p | ORadj | 95%CI | p | |||
| Increased PAAr | ||||||||||||
| Yes | 337 | 28.6 | 185 | 24.7 | 152 | 35.3 | 0.0001 | 1.63 | 1.21 | 2.20 | 0.0015 | |
| No | 843 | 71.4 | 564 | 75.3 | 279 | 64.7 | ref | |||||
| Sex | ||||||||||||
| Male | 972 | 82.4 | 611 | 81.6 | 361 | 83.8 | 0.3433 | ref | ||||
| Female | 208 | 17.6 | 138 | 18.4 | 70 | 16.2 | 1.38 | 0.89 | 2.15 | 0.1537 | ||
| Age (years) | 49.8 | 9.34 | 49.8 | 9.43 | 49.8 | 9.20 | 0.9907 | 1.01 | 0.99 | 1.02 | 0.3973 | |
| Height (cm) | 171.6 | 9.78 | 170.6 | 9.82 | 173.2 | 9.48 | <.0001 | 1.05 | 1.03 | 1.07 | <0.0001 | |
| Race/Ethnicity | ||||||||||||
| Non-Latino White | 630 | 53.4 | 409 | 54.6 | 221 | 51.3 | 0.2621 | ref | ||||
| Non-Latino Non-White | 139 | 11.8 | 80 | 10.7 | 59 | 13.7 | 1.41 | 0.92 | 2.15 | 0.1150 | ||
| Latino | 411 | 34.8 | 260 | 34.7 | 151 | 35.0 | 1.89 | 1.35 | 2.66 | 0.0002 | ||
| Body mass index, kg/m2 | 29.82 | 5.14 | 29.30 | 4.70 | 30.72 | 5.73 | <.0001 | 1.04 | 1.01 | 1.07 | 0.0077 | |
| Smoking status | ||||||||||||
| Never | 627 | 53.1 | 400 | 53.4 | 227 | 52.7 | 0.9417 | - | - | - | 0.7619 | |
| Former | 329 | 27.9 | 209 | 27.9 | 120 | 27.8 | - | - | - | - | ||
| Current | 224 | 19.0 | 140 | 18.7 | 84 | 19.5 | - | - | - | - | ||
| Occupational category | ||||||||||||
| Management/service | 214 | 18.1 | 113 | 15.1 | 101 | 23.4 | <.0001 | - | - | - | - | |
| Construction trades/maintenance | 215 | 18.2 | 122 | 16.3 | 93 | 21.6 | - | - | - | - | ||
| Laborer/cleaner/asbestos removal | 385 | 32.6 | 306 | 40.8 | 79 | 18.3 | - | - | - | - | ||
| Transportation | 69 | 5.9 | 36 | 4.8 | 33 | 7.7 | - | - | - | - | ||
| Law enforcement/military | 261 | 22.1 | 145 | 19.4 | 116 | 26.9 | - | - | - | - | ||
| Unemployed/retired/unknown | 36 | 3.1 | 27 | 3.6 | 9 | 2.1 | - | - | - | - | ||
| WTC arrival | ||||||||||||
| <48 hours | 582 | 49.3 | 319 | 42.6 | 263 | 61.0 | <.0001 | 1.71 | 1.29 | 2.28 | 0.0002 | |
| >48 hours | 598 | 50.7 | 430 | 57.4 | 168 | 39.0 | ref | |||||
| WTC exposure duration | ||||||||||||
| <60 days | 476 | 40.3 | 275 | 36.7 | 201 | 46.6 | 0.0008 | 1.44 | 1.09 | 1.90 | 0.0099 | |
| 60+ days | 704 | 59.7 | 474 | 63.3 | 230 | 53.4 | ref | |||||
| Wall area percent (WAP)** | 62.32 | 7.78 | 61.23 | 7.73 | 64.22 | 7.51 | <.0001 | 1.05* | 1.02 | 1.08 | 0.0044 | |
| Sleep apnea | ||||||||||||
| Yes | 479 | 40.6 | 308 | 41.1 | 171 | 39.7 | 0.6262 | 0.77 | 0.58 | 1.03 | 0.0794 | |
| No | 701 | 59.4 | 441 | 58.9 | 260 | 60.3 | ref | |||||
| Bronchodilator response (BDR) | ||||||||||||
| Yes | 268 | 22.7 | 89 | 11.9 | 179 | 41.5 | <.0001 | 5.37 | 3.91 | 7.38 | <0.0001 | |
| No | 912 | 77.3 | 660 | 88.1 | 252 | 58.5 | ref | |||||
| PTSD Checklist (PCL) score | 44.4 | 19.13 | 45.5 | 18.85 | 42.6 | 19.48 | 0.0080 | 1.00 | 0.99 | 1.00 | 0.3107 | |
| FET >= 6 sec | ||||||||||||
| Yes | 708 | 60.0 | 462 | 61.7 | 246 | 57.1 | 0.7799 | 0.78 | 0.59 | 1.03 | 0.0772 | |
| No | 472 | 40.0 | 287 | 38.3 | 185 | 42.9 | ref | |||||
*
per each 5% units of WAP.
**
Imputed