Table I.
Characteristics of workers in the control and diesel engine exhaust exposure groups in a cross-sectional molecular epidemiology study in China
| Variables | Control (n=46) | Diesel engine exhaust exposure (n=41) | P |
|---|---|---|---|
| Age (years, mean±SD) | 42.4±7.3 | 43.0±6.1 | 0.70a |
| BMI (kg/m2, mean±SD) | 25.3±3.9 | 24.6±2.9 | 0.31a |
| Current smoking status | 0.95b | ||
| Yes, n (%) | 30 (65.2) | 27 (65.9) | |
| No, n (%) | 16(34.8) | 14 (34.1) | |
| Current alcohol use | 0.047b | ||
| Yes, n (%) | 42 (91.3) | 31 (75.6) | |
| No, n (%) | 4 (8.7) | 10 (24.4) | |
| Current infection | 0.47b | ||
| Yes, n (%) | 26 (56.5) | 20 (48.8) | |
| No, n (%) | 20 (43.5) | 21 (51.2) | |
| Working years (years, mean±SD) | - | 20.8±6.0 | - |
a,
t-test for difference between two groups
b,
χ2 test for difference between two groups
BMI, body mass index