Association between silicosis and exposure variables in logistic regression analysis (n = 520)
| Odds ratio | 95% CI | p | |
|---|---|---|---|
| *Length of service and average intensity mutually adjusted. Cumulative exposure examined in a model on its own. | |||
| Length of service (per year)* | 1.11 | 1.06 to 1.17 | 0.00 |
| Length of service (per 5 years)* | 1.69 | 1.34 to 2.15 | 0.00 |
| Cumulative exposure respirable dust (per mg.year/m3) | 1.2 | 1.1 to 1.3 | 0.00 |
| Cumulative exposure quartz (per mg.year/m3) | 3.2 | 1.9 to 5.4 | 0.00 |
| Average intensity respirable dust (per 0.01 mg/m3)* | 1.03 | 1.005 to 1.05 | 0.02 |
| Average intensity quartz (per 0.01 mg/m3)* | 1.18 | 1.02 to 1.37 | 0.03 |