Correlation of mMRC and Borg score

Correlation Coefficient

P value

Non adjusted (n = 342)

0.764

<0.001

Adjusted with age, BMI, FEV1 and % predicted distance in 6 MWT (n = 338)

0.670

<0.001

Adjusted with age, BMI, FEV1, % predicted distance, TLC, FRC, DLCO, presence of AFO (n = 254)

0.587

<0.001