Spirometric findings of the workers
| Parameter | Group | % predicted value | |
|---|---|---|---|
| Mean (SD) | p Value | ||
| FEV1 | Coffeehouse workers | 89.37 (16.17) | 0.011 |
| Other occupations | 94.47 (12.42) | ||
| FVC | Coffeehouse workers | 86.70 (15.10) | 0.080 |
| Other occupations | 90.16 (12.67) | ||
| FEV1/FVC | Coffeehouse workers | 85.83 (10.76) | 0.250 |
| Other occupations | 87.43 (08.74) | ||
| PEF | Coffeehouse workers | 68.99 (21.13) | 0.026 |
| Other occupations | 75.44 (19.97) | ||
| FEF25 | Coffeehouse workers | 72.56 (24.58) | 0.027 |
| Other occupations | 79.84 (21.77) | ||
| FEF50 | Coffeehouse workers | 84.06 (29.14) | 0.006 |
| Other occupations | 94.22 (23.56) | ||
| FEF75 | Coffeehouse workers | 106.89 (31.60) | 0.254 |
| Other occupations | 101.44 (36.01) | ||
| FEF25–75 | Coffeehouse workers | 88.07 (28.67) | 0.009 |
| Other occupations | 97.94 (24.28) | ||