Subjects | Workers (n = 50) | Controls (n = 50) | p value |
Age (years) | 35 ± 6.85 | 35.51 ± 8.22 | 0.738 |
Sex | 50 (male) | 50 (male) | - |
Work history (years) | 11.18 ± 6.820 | 10.16 ± 8.87 | 0.62 |
Smoking (years) | 0.76 ± 3.305 | 1.80 ± 4.90 | 0.216 |
Smoking (N/day) | 0.70 ± 3.284 | 1.50 ± 4.53 | 0.315 |
BMI | 25.65 ± 1.94 | - | - |