Dissemin is shutting down on January 1st, 2025

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Elsevier, Primary Care Respiratory Journal, 1(23), p. 85-91, 2014

DOI: 10.4104/pcrj.2014.00006

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Impact of switching to new spirometric reference equations on severity staging of airflow obstruction in COPD: a cross-sectional observational study in primary care

Journal article published in 2014 by Romina Sluga, Ivo Jm Smeele, Annelies E. Lucas, Bart P. Thoonen, Joke G. Grootens-Stekelenburg, Yvonne F. Heijdra, Tjard R. Schermer ORCID
This paper was not found in any repository, but could be made available legally by the author.
This paper was not found in any repository, but could be made available legally by the author.

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Abstract

BACKGROUND: Severity of airflow obstruction in chronic obstructive pulmonary disease (COPD) is based on forced expiratory volume in one second expressed as percentage predicted (FEV1%predicted) derived from reference equations for spirometry results. AIMS: To establish how switching to new spirometric reference equations would affect severity staging of airflow obstruction in the Dutch primary care COPD patient population. METHODS: Spirometry tests of 3,370 adults aged >40 years with obstruction (postbronchodilator FEV1/forced vital capacity (FVC)