Features of workers with claims accepted for diisocyanate OA versus other causes of OA, 1980–93
| Diisocyanate OA | Other OA | p Value | |
|---|---|---|---|
| *Number with information on nasal symptoms in the file: 382 diisocyanate OA, 391 other OA. | |||
| n | 425 | 419 | |
| Age (y, mean (SD (median))) | 37.4 (11.4 (35.25)) | 42.3 (12.6 (41.42)) | 0.0001 |
| Male | 60% | 69% | 0.005 |
| Never smoked | 37% | 45% | 0.001 |
| Atopic on skin tests | 33% | 51% | 0.001 |
| Improve weekends | 65% | 60% | NS |
| Improve holidays | 88% | 78% | 0.001 |
| Nasal symptoms | 42%* | 53% | 0.003 |
| Exposure before symptoms (y, mean (SD (median))) | 5.13 (6.1 (3.0)) | 7.45 (7.7 (4.87)) | 0.0001 |
| Still exposed at assessment | 23% | 31% | NS |
| Exposure after onset of symptoms (y, mean (SD (median)) | 2.38 (3.5 (1.0)) | 3.38 (4.8 (1.50)) | 0.0008 |