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Table 2. Staging of COPD based on spirometry.
| At risk | Normal spirometry, chronic symptoms |
| Mild | FEV1/ FVC < 70% FEV1 > 80% predicted. |
| Moderate | FEV1/ FVC < 70% FEV1 30 - 80% predicted |
| Severe | FEV1/ FVC < 70% FEV1 < 30% predicted. |
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Table 2. Staging of COPD based on spirometry.
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| Copyright © 2003 Prof. S.K.Jindal, Head, Department of Pulmonary Medicine, PGIMER, Chandigarh. All rights reserved. |