Age, employment and health history information for the four cases
| Case 1 | Case 2 | Case 3 | Case 4 | |
| Age yrs | 29 | 38 | 44 | 39 |
| Occupational exposure time months | 4.5 | 6 | 27 | ∼48 |
| Time from onset of work to onset of symptoms months | 1.5 | 1 | <6 | <12 |
| FEV1 L | Sep 2001: 3.96 | Dec 2001: 2.60 | May 2003: 2.43 | Mar 2003: 2.77 |
| Oct 2001: 3.48 | Jan 2002: 2.41 | |||
| Oct 2001: 3.45 | Mar 2002: 2.42 | |||
| Nov 2001: 3.51 | ||||
| Feb 2002: 3.73 | ||||
| Mar 2002: 3.69 | ||||
| PC20 mg·mL−1 | Oct 2001: 1.03 | Mar 2002: 3.43 | May 2003: 1.66 | Mar 2003: >32 |
| Nov 2001: 0.74 | ||||
| Feb 2002: 1.23 | ||||
| Mar 2002: 5.90 | ||||
| Skin-prick test reactivity weal size mm | Tree mix: >3 | Horse: >3 | House dust mite: 1–2 | None |
| Weed mix: >3 | Cat: 1–2 | House dust: 1–2 | ||
| Grass mix: >3 | Swine: 1–2 | Grain dust: 1–2 | ||
| Alfalfa: >3 | ||||
| Smoking status | Current smoker | Current smoker | Never-smoker | Ex-smoker |
Data are presented as n, unless otherwise stated
FEV1: forced expiratory volume in one second
PC20: provocative concentration causing a 20% fall in FEV1