Decline in mean (SD) lung function over the feeding period in the morning (% of baseline value) for all farmers, farmers with, and farmers without work related respiratory symptoms
| Respiratory variable | Total (n=67) | With work related symptoms5-150(n=36) | Without work related symptoms5-150(n=31) |
| ΔFVC | −1.52 (6.12) | −1.25 (6.61) | −1.83 (5.58) |
| ΔFEV1 | −1.73 (6.17) | −0.88 (6.73) | −2.72 (5.38) |
| ΔMMEF25/75 | −1.63 (12.52) | −0.84 (12.11) | −2.50 (13.12) |
↵5-150 Work related symptoms: wheezing, breathlessness, or cough without phlegm at work.