. Author manuscript; available in PMC: 2018 Feb 1.

Published in final edited form as: Invest Radiol. 2017 Feb;52(2):120–127. doi: 10.1097/RLI.0000000000000322

Table 4.

Correlations of pulmonary functions tests to VDP. Note: significant results are displayed in bold font type.

Correlation with VDP	r	P-value
FEV1%	−0.42	.0249
FVC%	−0.09	.6284
FEV1/FVC	−0.71	<.0001
FEF25-75%	−0.45	.019
RV/TLC	0.51	.0067
DLCO mmol CO	0.34	.0858
FeNO ppb	0.69	<.0001
Eos Sputum %	0.00	.9631

EV1%=forced expiratory volume in 1 second; FVC%=forced vital capacity; FEF=forced mid-expiratory flow rate; FeNO=fractional exhaled nitric oxide; RV/TLC=residual volume/total lung capacity; VDP=ventilation defect percentage