Skip to main content

Table 1 Severity criteria of COPD

From: Health-related quality of life is related to COPD disease severity

Global Initiative for Chronic Obstructive Lung Disease, GOLD [3]: FEV1/FVC < 70%
I: Mild COPD FEV1 ≥ 80% predicted
II: Moderate COPD FEV1 50- < 80% predicted
III: Severe COPD FEV1 30- < 50% predicted
IV: Very severe COPD FEV1 < 30% predicted
British Thoracic Society, BTS [2]: FEV 1 /VC < 70% and FEV 1 < 80% predicted
I: Mild COPD FEV1 60- < 80% predicted
II: Moderate COPD FEV1 40-59% predicted
III: Severe COPD FEV1 < 40% predicted
  1. A group labelled BTS stage 0 was created for subjects with FEV1 ≥ 80% predicted: i.e. identical with mild COPD according to the GOLD criteria.