Cumulative exposure to total dust (mg/m3-y): |
0.1–49.9 | 2.1 (1.1 to 3.8) | 2.0 (1.1 to 3.7) | | | | | |
50–119.9 | 1.7 (0.9 to 3.1) | 1.4 (0.7 to 2.8) | | | | | |
≥120 | 2.8 (1.6 to 5.0) | 2.1 (1.1 to 4.2) | | | | | |
Duration of exposure: |
0.1–9.9 | | | 2.0 (1.1 to 3.7) | 1.7 (0.9 to 3.2) | | | |
10–19.9 | | | 2.3 (1.3 to 4.0) | 1.9 (1.0 to 3.5) | | | |
≥20 | | | 2.3 (1.2 to 4.3) | 1.9 (1.0 to 3.7) | | | |
Cumulative exposure to arsenic (μg/m3-y): |
0.1–99.9 | | | | | 2.1 (1.1 to 3.9) | 1.8 (0.9 to 3.5) | |
100–499.9 | | | | | 2.1 (1.1 to 3.9) | 1.9 (1.0 to 3.5) | |
500–999.9 | | | | | 1.8 (1.0 to 3.6) | 1.4 (0.7 to 3.0) | |
≥1000 | | | | | 3.6 (1.8 to 7.3) | 2.6 (1.2 to 5.7) | |
Tobacco smoking* | 1.6 (1.1 to 2.4) | 1.5 (1.0 to 2.3) | 1.6 (1.1 to 2.4) | 1.5 (1.0 to 2.3) | 1.6 (1.1 to 2.4) | 1.6 (1.0 to 2.3) | 1.5 (1.0 to 2.7) |
Silicosis | | 1.5 (1.0 to 2.4) | | 1.5 (1.0 to 2.3) | | 1.5 (1.0 to 2.3) | 1.9 (1.3 to 2.7) |
p Value† | p=0.40 | p=0.75 | p=0.81 | p=0.19 | p=0.95 | p=0.35 | p=0.42 |