Occupational category and time from symptom to diagnosis
| Occupation/source of exposure, time from symptom to diagnosis (median, days) | Men | Women | P value |
| Construction (builder, electrician, plumber, carpenter, lagger) | 49.6%, (N=188), 92 days, IQR=50–81 | There were no women in this category. | Not applicable |
| Work environment (teacher, doctor, nurse, secretarial, admin) | 2.6%, (N=10), 97 days, IQR=35–90 | 17.3%, (N=14), 396 days, IQR=58.75–80.75 | 0.47 |
| No occupation listed because assumed/could not prove that was exposed at work | 24% (N=91), 90 days, IQR=50–77.5 | 67.9%, (N=55), 151 days, IQR=60–80 | 0.076 |
| Other | 23.7%, (N=90), 92 days, IQR=50.75–85 | 14.8%, (N=12), 169 days, (IQR=80–95.25) | 0.05* |
*Significant.