Table 4

Clinical features of the patients with progressive FA—continuous variables

Progressive (10)Stable (15)
MedianRangeMedianRangeMann-Whitney U test p Value
*Students t test.
FEV1, forced expiratory volume in 1 second; FVC, forced vital capacity; Tlco, carbon monoxide transfer factor; RV, residual volume; FA, fibrosing alveolitis; HRCT, high resolution computed tomography.
Age (years)6649–755747–710.103*
Disease duration (years)8.52–1861–240.559
Cigarette pack years200–35200–400.978
FEV1/FVC ratio79.569–939855–1230.597
Tlco (% of predicted)5025–706951–990.001
RV (% of predicted)92.560–1329555–1850.254
HRCT score for FA distribution0.7750–50.050–30.031
% Lung involvement on HRCT9.9751.24–95.422.8600.12–69.860.026