Table 7

Relative risk (95% CI) for lung cancer from the logistic regression model

Model 1Model 2Model 3Model 4Model 5Model 6Model 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):
    0.1–49.92.1 (1.1 to 3.8)2.0 (1.1 to 3.7)
    50–119.91.7 (0.9 to 3.1)1.4 (0.7 to 2.8)
    ≥1202.8 (1.6 to 5.0)2.1 (1.1 to 4.2)
Duration of exposure:
    0.1–9.92.0 (1.1 to 3.7)1.7 (0.9 to 3.2)
    10–19.92.3 (1.3 to 4.0)1.9 (1.0 to 3.5)
    ≥202.3 (1.2 to 4.3)1.9 (1.0 to 3.7)
Cumulative exposure to arsenic (μg/m3-y):
    0.1–99.92.1 (1.1 to 3.9)1.8 (0.9 to 3.5)
    100–499.92.1 (1.1 to 3.9)1.9 (1.0 to 3.5)
    500–999.91.8 (1.0 to 3.6)1.4 (0.7 to 3.0)
    ≥10003.6 (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)
Silicosis1.5 (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=0.40p=0.75p=0.81p=0.19p=0.95p=0.35p=0.42