Table 1:

Mean sizes of airway and components measured by OCT and Histology

Structure	OCT	Histology	*p-value
Epithelium (mm2)	0.092±0.018	0.067±0.017	<0.001
Basement membrane (mm2)	0.033±0.0093	0.033±0.012	0.57
Airway smooth muscle (mm2)	0.040±0.014	0.054±0.033	<0.001
Glands (mm2)	0.028±0.018	0.038±0.015	<0.001
Cartilage (mm2)	0.20±0.23	0.26±0.37	0.03
Adventitia (mm2)	0.41±0.094	0.42±0.072	0.17
Total wall (mm2)	0.91±0.57	1.3±1.5	0.02
Lumen (mm2)	2.6±0.39	1.8±0.97	<0.001

^*paired t-test