Figure 1

Distributions of risk score of silicosis calculated with a linear combination of the selected predictors weighted by the Cox regression coefficient.
Note: low risk group (risk score < 3.97), high risk group (risk score >= 5.91).
Distributions of risk score of silicosis calculated with a linear combination of the selected predictors weighted by the Cox regression coefficient.
Note: low risk group (risk score < 3.97), high risk group (risk score >= 5.91).