Exposure factors associated with vascular stage
| Vascular stage | ||||
|---|---|---|---|---|
| 0 | 1 | 2 or 3 | p Value | |
| n | 110 | 27 | 28 | |
| Age (mean (SD)) | 39.1 (11.9) | 45.1 (9.3) | 46.6 (7.4) | <0.0001 |
| Trade (n (%)): | 0.03 | |||
| Welder | 49 (66) | 16 (22) | 9 (12) | |
| Fitter | 44 (76) | 5 (9) | 9 (16) | |
| Plater | 11 (65) | 3 (18) | 3 (18) | |
| Dresser | 6 (38) | 3 (19) | 7 (44) | |
| Smoking (n (%)): | 0.47 | |||
| Current | 34 (59) | 13 (22) | 11 (19) | |
| Non-smoking | 51 (73) | 8 (11) | 11 (16) | |
| Ex-smoking | 25 (68) | 6 (16) | 6 (16) | |
| Tool use (y, mean (SD)) | 20.6 (11.6) | 27.2 (9.8) | 30.0 (7.3) | <0.0001 |
| Exposure (h, mean (SD)) | 9171 (7495) | 12579 (9714) | 16786 (9587) | <0.0001 |