Table 7
Relative risk (95% CI) for lung cancer from the logistic regression model
| Model 1 | Model 2 | Model 3 | Model 4 | Model 5 | Model 6 | Model 7 | |
|---|---|---|---|---|---|---|---|
| *Tobacco smoking was divided into ≥20 cigarettes/day and <20 cigarettes/day; †p value for goodness of fit test, p=1 means completely fit, p<0.1 means can not fit. | |||||||
| 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 |
