Median regression spline modeling of longitudinal FEV₁ measurements in cystic fibrosis (CF) and chronic obstructive pulmonary disease (COPD) patients

• Douglas J. Conrad ,

  Roles Conceptualization, Data curation, Formal analysis, Methodology, Writing – original draft

  * E-mail: dconrad@ucsd.edu

  Affiliation Department of Medicine, University of California, San Diego, United States of America

  http://orcid.org/0000-0002-9344-3446

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• Barbara A. Bailey,

  Roles Methodology, Supervision, Writing – review & editing

  Affiliation Department of Mathematics and Statistics, San Diego State University, San Diego, United States of America

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• Jon A. Hardie,

  Roles Data curation, Resources, Writing – review & editing

  Affiliation Department of Clinical Science, University of Bergen, Bergen, Norway

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• Per S. Bakke,

  Roles Data curation, Resources, Writing – review & editing

  Affiliation Department of Clinical Science, University of Bergen, Bergen, Norway

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• Tomas M. L. Eagan,

  Roles Data curation, Methodology, Resources, Writing – review & editing

  Affiliations Department of Clinical Science, University of Bergen, Bergen, Norway, Department of Thoracic Medicine, Haukeland University Hospital, Bergen, Norway

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• Bernt B. Aarli

  Roles Data curation, Formal analysis, Investigation, Writing – original draft

  Affiliation Department of Clinical Science, University of Bergen, Bergen, Norway

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