Table 2 Correlations between quantitative CT measures in COPDGene subjects
From: Paired inspiratory-expiratory chest CT scans to assess for small airways disease in COPD
Correlations | ||||||||
|---|---|---|---|---|---|---|---|---|
N | Mean(SD) | %emph Insp -950 | Exp -856 | E/I mean lung atten. | RVC 856–950 | Residuals | SWRA Pi10 | |
%emphysema Insp -950 | 8517 | 6.2 (9.7) | -- | |||||
%Exp -856 | 8517 | 21.9 (19.9) | 0.83† | -- | ||||
E/I mean lung attenuation | 8517 | 0.87 (0.07) | 0.51† | 0.80† | -- | |||
RVC 856–950 | 8517 | −0.37 (0.18) | 0.37† | 0.48† | 0.58† | -- | ||
Residuals | 8517 | 0 (11.2) | 0 | 0.56† | 0.67† | 0.32† | -- | |
SRWA Pi10 (mm) | 2867 | 3.75 (0.12) | 0.06* | 0.13† | 0.23† | 0.46† | 0.15† | -- |