Table 5.

Multivariate regression analysis for the association between FEV ₁ (ml) and airway size at extra- and intra-parenchymal levels

Variable	Parameter (Std Error)	P Value
Airway Wall Volume (mm 3 )
Right Main Bronchus	0.12	0.007
Left Main Bronchus	0.06	0.17
Segmental airway	0.86	0.09
Subsegmental airway	2.18	0.003
Airway Lumen Volume (mm 3 )
Right Main Bronchus	0.10	0.004
Left Main Bronchus	0.08	0.009
Segmental airway	1.16	0.03
Subsegmental airway	2.89	0.002

All models were adjusted for age, sex, race, and height.