Predicted annual prevalence, incidence (expressed as cases per 1000 workers) and proportion atopic for major groupings of disease states with accompanying 95% confidence intervals
| State | Prevalence | Incidence | Atopic (%) |
| Sensitised to wheat (states 2, 3, 6, 7, 10, 11) | 98 (73 to 130) | 7 (5 to 9) | 61 (47 to 74) |
| Sensitised to α-amylase (states 3, 4, 7, 8, 11, 12) | 90 (55 to 139) | 7 (4 to 10) | 53 (38 to 67) |
| Moderate symptoms (states 5, 6, 7, 8) | 120 (95 to 150) | 15 (12 to 18) | 40 (29 to 52) |
| Severe symptoms (states 9, 10, 11, 12) | 77 (46 to 140) | 9 (7 to 12) | 52 (40 to 64) |
| Work disability (state 13) | 4 (0 to 7) | 52 (40 to 64) |