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Table 5 Comorbidities according to disease severity

From: COPD uncovered: an international survey on the impact of chronic obstructive pulmonary disease [COPD] on a working age population

  Mild [MRC*** 1-2****] Moderate [MRC 3-4] Severity [MRC 5]
  [n = 849] [n = 1012] [n = 521]
Zero comorbidities 44% [376] 15% [152] 14% [71]
[n = 595] [%**]    
1-2 comorbidities 46% [391] 53% [533] 49% [255]
[n = 1196]    
≥3 comorbidities 10% [82] 32% [327] 37% [195]
[n = 613]    
  1. *2382 reported disease severity [44 = missing data from cohort of 2426]
  2. **The percentage with a particular level of disease and number of co-morbidities within each disease level
  3. ***= Medical Research Council
  4. ****1-2 = mild severity of disease, 3-4 = moderate severity of disease, 5 = severe disease