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The Egyptian Journal of Bronchology

Table 7 Correlation between FEV1% and inter-luminal diameter during the expiratory phase

From: Clinical, physiological, and radiological different phenotypes of COPD patients

CT inter-luminal diameter

FEV1%

r

P*

RB1

 + 0.62

 < 0.001

RB10

 + 0.72

 < 0.001

LB3

 + 0.51

 < 0.001

  1. RB1 apical bronchus of the right upper lobe, RB10 the posterior basal bronchus of the right lower lobe, LB3 the anterior bronchus of the left upper lobe
  2. *Pearson correlation coefficient, the sign before “r” denotes the direction of relation, P < 0.05 considered significant
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