Risk associated with occupational exposure among male cases of systemic sclerosis and matched controls; maximum likehood estimate of the odds ratio (OR) and confidence intervals (95% CI)
| Exposure† | Cases n=11 | Controls n=22 | OR (95% CI) |
|---|---|---|---|
| †Ever versus never exposed; *p<0.05. | |||
| Crystalline silica | 4 | 3 | 3.62 (0.64 to 20.40) |
| Trichlorethylene | 7 | 6 | 4.67 (0.99 to 21.89) |
| Chlorinated solvents | 7 | 6 | 4.67 (0.99 to 21.89) |
| Toluene | 3 | 2 | 3.75 (0.52 to 26.84) |
| Aromatic solvents | 4 | 3 | 3.62 (0.64 to 20.41) |
| Ketones | 1 | 0 | Non-calculable |
| White spirit | 7 | 7 | 3.75 (0.82 to 17.17) |
| Any type of solvent | 8 | 6 | 7.11 (1.40 to 36.12)* |
| Epoxy resin | 3 | 3 | 2.37 (0.39 to 14.38) |
| Welding fumes | 5 | 3 | 5.28 (0.96 to 28.9) |