Modified Medical Research Council scale vs Baseline Dyspnea Index to evaluate dyspnea in chronic obstructive pulmonary disease

Post date: Sep 6, 2015 7:18:28 AM

Assessment of dyspnea in COPD patients relies in clinical practice on the modified Medical Research Council (mMRC) scale, whereas the Baseline Dyspnea Index (BDI) is mainly used in clinical trials. Little is known on the correspondence between the two methods.

Both BDI and mMRC scores were significantly correlated at the group level (rho =-0.67;P<0.0001), but analysis of individual data revealed a large scatter of BDI scores for any given mMRC grade.

BDI and mMRC scores likely explore differently the dyspnea intensity in COPD patients and are clearly not interchangeable.

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