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Table 3 Results of stepwise multiple regression analyses to identify those variables that best predicted dyspnea assessed by the BDI score.

From: Airflow limitation or static hyperinflation: which is more closely related to dyspnea with activities of daily living in patients with COPD?

 

BDI score

Independent variables

 

   Age (years)

-

   Smoking (pack-years)

-

   BMI (kg/m2)

-

   FEV1 (L)

0.262

   IC/predicted TLC

-

   DLCO (mL/min/mmHg)

0.144

   PaO2 (mmHg)

-

   BNP (pg/mL)

-

Cumulative R2

0.406