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

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. To establish how switching to new spirometric reference equat...

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Bibliographic Details
Published in:Primary care respiratory journal 2014-03, Vol.23 (1), p.85-91
Main Authors: Sluga, Romina, Smeele, Ivo J M, Lucas, Annelies E, Thoonen, Bart P, Grootens-Stekelenburg, Joke G, Heijdra, Yvonne F, Schermer, Tjard R
Format: Article
Language:English
Subjects:
Adult
Aged
Aged, 80 and over
Cross-Sectional Studies
Female
Humans
Male
Middle Aged
Primary Health Care
Pulmonary Disease, Chronic Obstructive - diagnosis
Reference Values
Severity of Illness Index
Spirometry - statistics & numerical data
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Summary: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. To establish how switching to new spirometric reference equations would affect severity staging of airflow obstruction in the Dutch primary care COPD patient population. Spirometry tests of 3,370 adults aged >40 years with obstruction (postbronchodilator FEV1/forced vital capacity (FVC)
ISSN:1475-1534
DOI:10.4104/pcrj.2014.00006