Table 7: Association between FEV1, FVC percentage predicted, and TRV values.

TRVX2-value
Normal
n(%)
Elevated
n(%)

FEV1 Predicted
 < 80%36 (67.9)17(32.1)0.570
 > 80%12(66.7)6(33.3)

FVC predicted
 < 80%29(65.9)15(34.1)0.452
 > 80%19(70.4)8(29.6)