Occurrence of VWF in 755 Swedish car mechanics, using a survival analysis with life tables
| Duration of exposure (years) | VWF (%) |
|---|---|
| Non-attendants at the clinical examination, cases with white finger of other origin, and mechanics with unknown year of start of exposure were excluded from the analysis. | |
| 5 | 3.4 |
| 10 | 10 |
| 15 | 17 |
| 20 | 27 |
| 25 | 38 |
| 30 | 49 |