Table 4.: Mean baseline values of spirometric parameters in the examined subjects.

Spirometric Parameter Dairy Farmers (n = 52) Office Workers (n = 52) P-Value*
FVC (% pred) 85.3 ± 9.4 88.5 ± 10.1 0.0975
FEV1 (% pred) FEV1/FVC% 81.4 ± 8.7 72.8 ± 4.3 84.6 ± 9.1 74.7 ± 5.2 0.0697 0.0449
MEF50 (% pred) MEF75 (% pred) 55.9 ± 6.1 53.7 ± 5.7 60.5 ± 5.9 60.8 ± 6.4 0.0002 0.0000
MEF25-75 (% pred) 61.8 ± 6.3 64.5 ± 7.1 0.0428

Data are expressed as mean value with standard deviation.
FVC: forced vital capacity; FEV1: forced expiratory volume in 1 second; MEF50, MEF75, MEF25-75: maximal expiratory flow at 50%, 75%, and 25-75% of FVC, respectively; % pred: % of predicted value.
Tested by independent-sample T-test.