Comparison of central laboratory HbA1c measurements obtained from a capillary collection versus a standard venous whole blood collection in the GRADE and EDIC studies

• David M. Nathan,

  Roles Conceptualization, Data curation, Project administration, Writing – original draft, Writing – review & editing

  Affiliation Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States of America

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• Heidi Krause-Steinrauf ,

  Contributed equally to this work with: Heidi Krause-Steinrauf, Barbara H. Braffett

  Roles Conceptualization, Data curation, Formal analysis, Project administration, Supervision, Writing – original draft, Writing – review & editing

  * E-mail: heidi@bsc.gwu.edu

  Affiliation The Biostatistics Center, Milken Institute School of Public Health, The George Washington University, Rockville, MD, United States of America

  https://orcid.org/0000-0001-6894-4110

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• Barbara H. Braffett ,

  Contributed equally to this work with: Heidi Krause-Steinrauf, Barbara H. Braffett

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

  Affiliation The Biostatistics Center, Milken Institute School of Public Health, The George Washington University, Rockville, MD, United States of America

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• Valerie L. Arends,

  Roles Conceptualization, Data curation, Methodology, Project administration, Supervision, Writing – original draft, Writing – review & editing

  Affiliation Advanced Research and Diagnostic Laboratory, Department of Laboratory Medicine and Pathology, University of Minnesota, Minneapolis, MN, United States of America

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• Naji Younes,

  Roles Formal analysis, Writing – original draft, Writing – review & editing

  Affiliation The Biostatistics Center, Milken Institute School of Public Health, The George Washington University, Rockville, MD, United States of America

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• Paula McGee,

  Roles Formal analysis, Writing – original draft, Writing – review & editing

  Affiliation The Biostatistics Center, Milken Institute School of Public Health, The George Washington University, Rockville, MD, United States of America

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• Claire Lund,

  Roles Conceptualization, Data curation, Writing – review & editing

  Affiliation The Biostatistics Center, Milken Institute School of Public Health, The George Washington University, Rockville, MD, United States of America

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• Mary Johnson,

  Roles Conceptualization, Data curation, Investigation, Project administration, Supervision, Writing – review & editing

  Affiliation International Diabetes Center, Health Partners Institute, Minneapolis, MN, United States of America

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• Gayle Lorenzi,

  Roles Conceptualization, Data curation, Investigation, Writing – review & editing

  Affiliation University of California, San Diego, La Jolla, CA, United States of America

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• Xiaoyu Gao,

  Roles Data curation, Writing – review & editing

  Affiliation The Biostatistics Center, Milken Institute School of Public Health, The George Washington University, Rockville, MD, United States of America

  https://orcid.org/0000-0003-0633-8996

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• Michael W. Steffes,

  Roles Conceptualization, Methodology, Project administration, Supervision, Writing – review & editing

  Affiliation Advanced Research and Diagnostic Laboratory, Department of Laboratory Medicine and Pathology, University of Minnesota, Minneapolis, MN, United States of America

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• John M. Lachin,

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

  Affiliation The Biostatistics Center, Milken Institute School of Public Health, The George Washington University, Rockville, MD, United States of America

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• the GRADE Research Group ,

  ¶Membership of the GRADE Research Group and the DCCT/EDIC Research Group is provided in the Supporting information.

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• the DCCT/EDIC Research Group

  ¶Membership of the GRADE Research Group and the DCCT/EDIC Research Group is provided in the Supporting information.

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