ratio of forced expiratory volume in 1 second to forced vital capacity(English)
- when below 0.7 it is the cornerstone of COPD diagnosis. Also expressed as a percentage; aka Tifeneau index
- COPD, FEV1, FVC, PFT
- Respiratory system, Ratio-based metric, Diagnostics
- https://doi.org…0330-018-5659-9
- https://doi.org…598-021-95655-7