TABLE 2.
Summary of Exposure Measurements for All Participants and Participants Stratified by Primary Work Location (Outdoor vs Indoor)
| Exposure | All Measurements (N =137) | Outdoor Workers (N = 101) | Indoor Workers (N= 36) | P Value* |
|---|---|---|---|---|
|
| ||||
| Dust (mg/m3) | ||||
| GM (GSD) | 0.22 (3.23) | 0.22 (3.30) | 0.22 (3.04) | 0.83 |
| Min | 0.01 | 0.01 | 0.01 | |
| Max | 3.81 | 3.81 | 1.29 | |
| Endotoxin (EU/m3) | ||||
| GM (GSD) | 42.67 (7.53) | 37.93 (6.31) | 60.50 (11.46) | 0.03 |
| Min | 0.04 | 0.17 | 0.04 | |
| Max | 1595.06 | 1595.06 | 1349.35 | |
| b-glucan (pg/m3) | ||||
| GM (GSD) | 1,505.65 (2.76) | 1,633.28 (2.70) | 1,185.20 (2.83) | 0.32 |
| Min | 57.88 | 189.13 | 57.88 | |
| Max | 22598.25 | 22598.25 | 6447.10 | |
| Same-day ambient ozone (ppm) | ||||
| GM (GSD) | 0.05 (1.21) | 0.05 (1.20) | 0.05 (1.22) | |
| Min | 0.03 | 0.03 | 0.03 | |
| Max | 0.08 | 0.08 | 0.08 | |
EU, endotoxin units; GM, geometric mean; GSD, geometric standard deviation, ppm, parts per million.
*
Wilcoxon test comparing the distribution of exposure between outdoor and indoor workers.