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Table 6 Classifications of COPD groups using mMRC scores (cutpoint of mMRC = 1)* (n = 257)

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

High risk 9 (3.5%) 133(51.8%)
Low risk 41 (16.0%) 74(28.8%)
mMRC < 1 mMRC ≥ 1
  1. *Kappa agreement with COPD groups classified by CAT scores was 0.649.