Open Access<p>Fixed Ratio versus Lower Limit of Normality for Diagnosing COPD in Primary Care: Long-Term Follow-Up of EGARPOC Study</p>
Author(s) -
Montserrat Llordés Llordés,
Ángeles Jaén,
Elba Zurdo,
Montserrat Roca,
Inmaculada Fernández Vázquez,
Pere Almagro
Publication year - 2020
Publication title -
international journal of chronic obstructive pulmonary disease/international journal of copd
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 67
eISSN - 1178-2005
pISSN - 1176-9106
DOI - 10.2147/copd.s250720
Subject(s) - medicine , copd , normality , primary care , term (time) , pediatrics , family medicine , physics , quantum mechanics , psychiatry
The best criterion for diagnosing airway obstruction in COPD, fixed ratio (FR: FEV1/FVC<0.7) or lower limit of normality (LLN), remains controversial. We compared the long-term evolution of COPD patients according to the initial obstruction criteria.