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Table 2 Agreement between COPD categorisation by spirometry, and COPD categorisation by clinician

From: The UK Quality and Outcomes Framework pay-for-performance scheme and spirometry: rewarding quality or just quantity? A cross-sectional study in Rotherham, UK

  COPD category by FEV1 (% predicted) result
Clinician categorisation of COPD Normal Mild Moderate Severe Total
Normal 0 0 0 0 0
Mild 140 470 50 13 673
Moderate 17 218 235 13 483
Severe 5 23 105 97 230
Total 162 711 390 123 1386