Table 1: The study of age, forced expiratory volume in 1st second (FEV1), forced vital capacity (FVC)and serum mercury (Hg) levels in traditional gold miners and non-exposed healthy control men.
| Parameters | Traditional gold miners (n=83) (Mean ± Std) | Non exposed healthy controls (n=50) (Mean ± Std) | P value |
| Age (years) | 30.46 ± 10.01 | 28.1 ± 5.39 | |
| Weight (kg) | 63.14 ± 10.51 | 63.00 ± 10.96 | |
| Height (cm) | 169 ± 6.44 | 168.45 ± 6.46 | |
| Mean FEV1 (L) | 3.24 ± 0.57 | 3.40 ± 0.39 | |
| Mean FVC (L) | 3.7 ± 0.69 | 3.86 ± 0.60 | |
| Mercury (Hg) (μg/l) | 24.9 ± 32.24 Range (0.86–124μg/l) | 1.4 ± 0.94 Range (0.29–3.6 μg/l) | 0.000 |