Red blood cell distribution width to albumin ratio as a novel predictor for mortality in chronic obstructive pulmonary disease patients: Results from the cohort study of NHANES, 1999–2018

• Guoxin Zhang ,

  Contributed equally to this work with: Guoxin Zhang, Beizheng Xu

  Roles Conceptualization, Data curation, Formal analysis, Software, Writing – original draft, Writing – review & editing

  Affiliation Department of Respiratory and Critical Care Medicine, Tianjin University Chest Hospital, Thoracic Clinical College of Tianjin Medical University, Tianjin Chest Hospital, Tianjin, China

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• Beizheng Xu ,

  Contributed equally to this work with: Guoxin Zhang, Beizheng Xu

  Roles Data curation, Formal analysis, Software, Writing – original draft, Writing – review & editing

  Affiliation Tianjin Key Laboratory of Ionic-Molecular Function of Cardiovascular Disease, Department of Cardiology, Tianjin Institute of Cardiology, Second Hospital of Tianjin Medical University, Tianjin, China

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• Xiaoyun Zhao

  Roles Funding acquisition, Writing – review & editing

  * E-mail: zxydoctor@163.com

  Affiliation Department of Respiratory and Critical Care Medicine, Tianjin University Chest Hospital, Thoracic Clinical College of Tianjin Medical University, Tianjin Chest Hospital, Tianjin, China

  https://orcid.org/0000-0003-0873-7229

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