Correlation of mMRC and Borg score

With airflow obstruction

No airflow obstruction

Coefficient

P Value

Coefficient

p Value

Non adjusted

0.6717

(n = 133)

<0.001

0.8804

(n = 161)

<0.001

Adjusted with age, BMI, FEV1 and % predicted distance

0.5749

(n = 133)

0.001

0.7476

(n = 161)

<0.001

Adjusted with age, BMI, FEV1 and % predicted distance, TLC, FRC, DLCO

0.4084

(n = 114)

0.52

0.6779

(n = 140)

0.001