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Differences in classification of COPD group using COPD assessment test (CAT) or modified Medical Research Council (mMRC) dyspnea scores: a cross-sectional analyses

Sunmin Kim, Jisun Oh, Yu-Il Kim*, Hee-Jung Ban, Yong-Soo Kwon, In-Jae Oh, Kyu-Sik Kim, Young-Chul Kim and Sung-Chul Lim

BMC Pulmonary Medicine 2013, 13:35  doi:10.1186/1471-2466-13-35

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Concordance of mMRC and CAT when used for COPD classification according to GOLD 2011

Norbert Banik   (2013-07-16 11:40)  Winicker Norimed Medical Research GmbH, Munich, Germany email

I read your article with big interest. It seems that we now have already a couple of indications that the two alternative classification systems suggeted by GOLD will need some revision - as you also concluded.
I wanted to make you aware of a similar work which appeared online in ERJ already in December 2012 ( Unfortunately it did not show up in print yet.
I want to mention that CAT is a validated score and item-wise use is not intended. The correlation analyses you presented with regard to single CAT items and mMRC is thus lacking a methodological sound basis.

Competing interests

No conflicting interests.


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