The FEV1/FEV6 ratio is a good substitute for the FEV1/FVC ratio in the elderly.

@article{Melbye2006TheFR,
  title={The FEV1/FEV6 ratio is a good substitute for the FEV1/FVC ratio in the elderly.},
  author={Hasse Melbye and Astri Medb\o and Alan Crockett},
  journal={Primary care respiratory journal : journal of the General Practice Airways Group},
  year={2006},
  volume={15 5},
  pages={294-8}
}
AIMS To determine the agreement between the FEV1/FEV6 ratio and the FEV1/FVC ratio in an elderly population. METHOD The study sample consisted of 3874 participants in a cross-sectional population survey in Tromsö, Norway, aged 60 years or more, in whom acceptable spirometry had been obtained. Mean differences between the FEV1/FEV6 ratio (%) and the FEV1/FVC ratio (%) were calculated according to age, sex, smoking habit, and the degree of airflow limitation. ROC-curve analysis and Kappa… CONTINUE READING

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