Table 1.
Exposure levels of INH and RES dust by personal characteristics among Australian miners
| Characteristic | INH | RES | ||||
|---|---|---|---|---|---|---|
| N | GM (GSD) | High exposure (%)a | N | GM (GSD) | High exposure (%)b | |
| Overall | 5683 | 0.78 (3.52) | 167 (2.9) | 8561 | 0.26 (2.69) | 80 (0.9) |
| Gender, n (%) | ||||||
| Female | 533 | 0.51 (3.19) | 10 (1.9) | 772 | 0.22 (2.48) | 4 (0.5) |
| Male | 5150 | 0.75 (3.53) | 157 (3.0) | 7789 | 0.26 (2.70) | 76 (1.0) |
| Pc | < 0.001 | < 0.001 | ||||
| Occupation, n (%) | ||||||
| Manager | 1391 | 0.81 (3.45) | 45 (3.2) | 1546 | 0.26 (2.66) | 13 (0.8) |
| Surface production | 2182 | 0.76 (3.63) | 69 (3.2) | 2487 | 0.26 (2.77) | 25 (1.0) |
| Underground mining | 2110 | 0.64 (3.42) | 53 (2.5) | 4528 | 0.25 (2.65) | 42 (0.9) |
| Pc | < 0.001 | 0.569 | ||||
| Shift length, n (%) | ||||||
| 10 h | 1442 | 0.81 (3.70) | 45 (3.1) | 1763 | 0.26 (2.73) | 17 (1.0) |
| 12 h | 4241 | 0.70 (3.45) | 122 (2.9) | 6798 | 0.25 (2.68) | 63 (0.9) |
| Pc | < 0.001 | 0.817 | ||||
| Smoking status, n (%) | ||||||
| Yes | 1826 | 0.82 (3.47) | 58 (3.2) | 2927 | 0.28 (2.69) | 30 (1.0) |
| No | 3857 | 0.69 (3.53) | 109 (2.8) | 5634 | 0.25 (2.68) | 50 (0.9) |
| Pc | < 0.001 | < 0.001 | ||||
GM geometric mean
a > 10 mg/m3
b > 5 mg/m3
cfrom Wilcoxon sign test or Kruskal–Wallis test