Table 1.
Descriptive characteristics of factory workers enrolled in the study and that were either exposed to diesel engine exhaust (Diesel) or unexposed (Control).
| Subjects (n=79) | Control (n=38) | Diesel (n=41) | p-value | ||
|---|---|---|---|---|---|
| Age, mean (SD) | 41.3 (6.8) | 41.0 (7.0) | 0.95◇ | ||
| BMI, mean (SD) | 25.1 (4.2) | 24.6 (3.2) | 0.78◇ | ||
| Smoking Status | |||||
| Never, n (%) | 5 (13.2) | 8 (19.5) | 0.72▽ | ||
| Former, n (%) | 9 (23.7) | 10 (24.4) | |||
| Current, n (%) | 24 (63.2) | 23 (56.1) | |||
| Avg. cigs/day (SD), Current | 11.4 (6.6) | 11.1 (5.5) | 1◇ | ||
| Exposure Metrics | |||||
| Mean (SD) | Median (range) | Mean (SD) | Median (range) | ||
| Elemental Carbon, µg/m3 | 11.1 (1.34) | 11.1 (9.9–12.6) | 57.54 (21.1) | 60.7 (17.2–105.4) | 5.38E-16◇ |
| Organic Carbon, µg/m3 | 68.7 (4.03) | 68.7 (65.0–73.1) | 136.66 (25.7) | 131.3 (95.6–209.1) | 5.38E-16◇ |
| Soot, (abs coefficient in 10−5 /m) | 6.8 (0.64) | 6.8 (6.2–7.5) | 49.57 (14.6) | 52.3 (23.0–77.3) | 5.38E-16◇ |
| PM2.5, mg/m3 | 0.2 (0.07) | 0.2 (0.2–0.3) | 0.36 (0.1) | 0.4 (0.2–0.5) | 1.27E-14◇ |
◇
- Wilcoxon Test,
▽
- Fisher’s Exact Test