Table 4.
Mean baseline values of spirometric parameters
| Spirometric parameter | Parquet manufacturers | Office workers | P-value* |
|---|---|---|---|
| (n = 37) | (n = 37) | ||
| FVC (%pred) | 92.3 ± 14.7 | 94.2 ± 11.4 | 0.088 |
| FEV1 (%pred) | 82.6 ± 10.2 | 86.8 ± 9.4 | 0.034 |
| FEV1/FVC | 0.75 ± 0.05 | 0.78 ± 0.03 | 0.037 |
| MEF25 (%pred) | 70.3 ± 8.9 | 76.9 ± 7.4 | 0.029 |
| MEF50 (%pred) | 64.6 ± 13.8 | 72.7 ± 10.5 | 0.011 |
| MEF75 (%pred) | 60.2 ± 16.7 | 69.7 ± 11.8 | 0 |
| MEF25-75 (%pred) | 65.9 ± 14.1 | 70.8 ± 12.9 | 0.006 |
Data are expressed as mean value with standard deviation. FVC: forced vital capacity; FEV1: forced expiratory volume in one second; MEF75, MEF50, MEF25, MEF25-75: maximal expiratory flow at 25, 50%, 75% and 25-75% of FVC, respectively; % pred: % of predicted value.
*
Compared by Independent-samples T-test.