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Clinical Epidemiology Volume 13, 2021 - Issue
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Methodology

Adaptation of the Charlson Comorbidity Index for Register-Based Research in Sweden

Jonas F Ludvigsson1 Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden;2 Department of Pediatrics, Orebro University Hospital, Orebro, Sweden;3 Division of Epidemiology and Public Health, School of Medicine, University of Nottingham, Nottingham, UK;4 Department of Medicine, Columbia University College of Physicians and Surgeons, New York, New York, USACorrespondence[email protected]
ORCID Iconhttps://orcid.org/0000-0003-1024-5602View further author information
ORCID Icon,
Peter Appelros5 University Health Care Research Center, Faculty of Medicine and Health, Örebro University, ÖrebroSE-701 82, SwedenView further author information
,
Johan Askling6 Clinical Epidemiology Division, Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden;7 Rheumatology, Theme Inflammation and Infection, Karolinska University Hospital, Stockholm, SwedenView further author information
,
Liisa Byberg8 Department of Surgical Sciences, Uppsala University, Uppsala, SwedenView further author information
,
Juan-Jesus Carrero1 Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, SwedenORCID Iconhttps://orcid.org/0000-0003-4763-2024View further author information
ORCID Icon,
Anna Mia Ekström9 Global & Sexual Health Research Group (GloSH), Department of Global Public Health, Karolinska Institutet, Stockholm, Sweden;10 Faculty of Medicine, Department of Clinical Sciences Lund, Respiratory Medicine and Allergology, Lund University, Lund, SwedenView further author information
,
Magnus Ekström11 Department of Infectious Diseases, Karolinska University Hospital, Stockholm, SwedenORCID Iconhttps://orcid.org/0000-0002-7227-5113View further author information
ORCID Icon,
Karin Ekström Smedby6 Clinical Epidemiology Division, Department of Medicine Solna, Karolinska Institutet, Stockholm, SwedenView further author information
,
Hannes Hagström12 Division of Hepatology, Department of Upper GI Diseases, Karolinska University Hospital, Stockholm, Sweden;6 Clinical Epidemiology Division, Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden;14 Department of Medicine, Karolinska Huddinge, Institutet, Stockholm, SwedenView further author information
,
Stefan James15 Department of Medical Sciences, Cardiology, Uppsala University, Uppsala, Sweden;16 Uppsala Clinical Research Center, Uppsala University, Uppsala, SwedenView further author information
,
Bengt Järvholm17 Department of Public Health and Clinical Medicine, Umeå University, Umeå, SwedenView further author information
,
Karl Michaelsson8 Department of Surgical Sciences, Uppsala University, Uppsala, SwedenORCID Iconhttps://orcid.org/0000-0003-2815-1217View further author information
ORCID Icon,
Nancy L Pedersen18 Department of Medical Epidemiology, Karolinska Institutet, Stockholm, SwedenView further author information
,
Helene Sundelin19 Neuropediatric Unit, Department of Women’s and Children’s Health, Karolinska University Hospital, Karolinska Institutet, Stockholm, Sweden;20 Division of Children’s and Women’s Health, Department of Biomedical and Clinical Sciences, Linköping University, Linköping, SwedenView further author information
,
Kristina Sundquist21 Center for Primary Health Care Research, Department of Clinical Sciences, Malmö, Lund University, Lund, SwedenView further author information
&
Johan Sundström22 Department of Medical Sciences, Uppsala University, Uppsala, Sweden;23 The George Institute for Global Health, University of New South Wales, Sydney, Australia;24 Department of Family Medicine and Community Health, Department of Population Health Science and Policy, Icahn School of Medicine at Mount Sinai, New York, NY, USA; Center for Community-Based Healthcare Research and Education (CoHRE), Department of Functional Pathology, School of Medicine, Shimane University, JapanORCID Iconhttps://orcid.org/0000-0003-2247-8454View further author information
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Pages 21-41 | Published online: 12 Jan 2021

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