Table 2. Pulmonary function test data and Inhalation exposure intensity (mg/m3) in study groups .
| Groups | Mean | SD | Min | Max | P value |
| FEV1 (%) | |||||
| Exposure | 103.5 | 16.5 | 81.0 | 126.0 | 0.002 |
| Negative control | 90.8 | 10.1 | 74.5 | 110.0 | |
| Positive control | 74.5 | 1.9 | 72.0 | 76.0 | |
| FVC (%) | |||||
| Exposure | 120.2 | 25.6 | 86.0 | 164.0 | 0.001 |
| Negative control | 91.3 | 7.7 | 77.0 | 110.0 | |
| Positive control | 113.5 | 5.2 | 109.0 | 121.0 | |
| FEV1/FVC (%) | |||||
| Exposure | 71.6 | 5.7 | 64.0 | 84.0 | 0.001 |
| Negative control | 83.4 | 2.7 | 78.0 | 88.0 | |
| Positive control | 60.7 | 2.7 | 57.9 | 64.0 | |
| Respirable dust | |||||
| Exposure | 5.2 | 1.8 | 1.8 | 8.2 | 0.026 |
| Positive control | 7.5 | 1.1 | 5.9 | 8.5 | |
| Crystalline silica | |||||
| Exposure | 0.1 | 0.1 | 0.1 | 0.3 | 0.006 |
| Positive control | 0.2 | 0.1 | 0.2 | 0.3 |