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Table 5 Relationship between functional variables and densitometric quantification of emphysema by multivariate linear regression model with stepwise selection

From: Computer quantification of airway collapse on forced expiration to predict the presence of emphysema

Variables

Partial R2value

Model R2value

p value

1.

   

  AC, degrees

0.1938

0.1938

<.0001

  KCO, %predicted

0.0404

0.2342

<.0001

2.

   

  AC, degrees

0.1939

0.1939

<.0001

  FEV1/FVC

0.0074

0.2013

0.0385

  FEV1, %predicted

0.0083

0.2097

0.0280

  1. 1/ Variables of spirometry (initial model: AC, FVC,%pred, FEV1,%pred, FEV1/FVC); 2/ Variables of spirometry and diffusion capacity (initial model: AC, FVC,%pred, FEV1,%pred, FEV1/FVC, DL,CO,%pred, KCO,%pred).
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Respiratory Research

ISSN: 1465-993X

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