Increased Accuracy After Adjustment of Spirometry Threshold for Diagnosing COPD Based on Pre-Bronchodilator FEV1/FVC

Thomas Kronborg; Stine Hangaard; Simon Lebech Cichosz; Ole Hejlesen

doi:10.4187/respcare.06148

Research ArticleOriginal Research

Increased Accuracy After Adjustment of Spirometry Threshold for Diagnosing COPD Based on Pre-Bronchodilator FEV₁/FVC

Thomas Kronborg, Stine Hangaard, Simon Lebech Cichosz and Ole Hejlesen

Respiratory Care January 2019, 64 (1) 85-90; DOI: https://doi.org/10.4187/respcare.06148

Thomas Kronborg

Department of Health Science and Technology, Aalborg University, Denmark.

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For correspondence: [email protected]

Stine Hangaard

Department of Health Science and Technology, Aalborg University, Denmark.

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Simon Lebech Cichosz

Department of Health Science and Technology, Aalborg University, Denmark.

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Ole Hejlesen

Department of Health Science and Technology, Aalborg University, Denmark.

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Fig. 1.
Flow chart. NHANES = National Health and Nutrition Examination Survey.
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Fig. 2.
Receiver operating characteristics curve based on varying the threshold of pre-bronchodilator FEV₁/FVC when diagnosing COPD. Crosses indicate the thresholds of 0.70 and 0.66.

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Respiratory Care

Vol. 64, Issue 1

1 Jan 2019

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Increased Accuracy After Adjustment of Spirometry Threshold for Diagnosing COPD Based on Pre-Bronchodilator FEV₁/FVC