Abstract P210
Never smokers (n = 63)Non-index (n = 42)
Regression methodAge group methodRegression methodAge group method
FEV1 % predicted using 80% threshold3825–294140–44
FEV1:FVC4555–594740–44
KCO % predicted using 80% threshold3330–342425–29
Upper zone voxel index<2025–292025–29
Lower zone voxel index2530–342730–34