From: COPD diagnosis related to different guidelines and spirometry techniques
 | FEV1/(VC or FVC) | FEV1 | Remarks |
---|---|---|---|
ERS | < 88% pred for men | Only for staging | Â |
 | < 89% pred for women |  |  |
NICE | < 70% absolute value | < 80% predicted | Â |
GOLD | < 70% absolute value | Only for staging | Post-bronchodilator values |