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  • 1.
    Eriksson, Carl
    et al.
    Örebro universitet, Institutionen för medicinska vetenskaper.
    Bergemalm, Daniel
    Örebro universitet, Institutionen för medicinska vetenskaper.
    Vigren, L.
    Dept Med, Div Gastroenterol, Hosp Trelleborg, Trelleborg, Sweden.
    Nilsson, L.
    Dept Internal Med, Danderyd Hosp, Stockholm, Sweden.
    Visuri, Isabella
    Örebro universitet, Institutionen för medicinska vetenskaper.
    Hjortswang, H.
    Dept Gastroenterol, Linköping Univ, Linköping, Sweden; Dept Clin & Expt Med, Linköping, Sweden.
    Udumyan, Ruzan
    Örebro universitet, Institutionen för medicinska vetenskaper.
    Almer, S.
    Dept Med, Gastrocentrum, Karolinska Inst, Stockholm, Sweden.
    Seddighzadeh, M.
    Merck Sharp & Dohme Ltd, Stockholm, Sweden.
    Hertervig, E.
    Dept Gastroenterol, Skane Univ Hosp, Lund, Sweden.
    Karlen, P.
    Dept Internal Med, Danderyd Hosp, Stockholm, Sweden.
    Strid, H.
    Dept Internal Med, Södra Älvsborgs Hosp, Borås, Sweden.
    Halfvarson, Jonas
    Örebro universitet, Institutionen för medicinska vetenskaper.
    Clinical effectiveness of golimumab: Interim analysis of the observational study of patients with ulcerative colitis on golimumab in the Swedish National Quality Registry for IBD-GO-SWIBREG2018Ingår i: Journal of Crohn's & Colitis, ISSN 1873-9946, E-ISSN 1876-4479, Vol. 12, nr Suppl. 1, s. S409-S410Artikel i tidskrift (Övrigt vetenskapligt)
  • 2.
    Shrestha, Sarita
    et al.
    Örebro universitet, Institutionen för medicinska vetenskaper.
    Olén, Ola
    Department of Clinical Science and Education, Karolinska Institutet, Stockholm, Sweden; Clinical Epidemiology Division, Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden; Department of Pediatric Gastroenterology and Nutrition, Sachs' Children and Youth Hospital, Stockholm, Sweden.
    Eriksson, Carl
    Örebro universitet, Institutionen för medicinska vetenskaper. Region Örebro län. Clinical Epidemiology Division, Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden; Department of Gastroenterology, Faculty of Medicine and Health, Örebro University, Örebro, Sweden.
    Everhov, Åsa H.
    Department of Clinical Science and Education, Karolinska Institutet, Stockholm, Sweden; Clinical Epidemiology Division, Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden.
    Myrelid, Pär
    Division of Surgery, Department of Clinical and Experimental Medicine, Faulty of Health Sciences, Linköping University; Department of Surgery, County Council of Östergötland Linköping, Linköping, Sweden.
    Visuri, Isabella
    Örebro universitet, Institutionen för medicinska vetenskaper.
    Ludvigsson, Jonas F.
    Örebro universitet, Institutionen för medicinska vetenskaper. Region Örebro län. Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden; Department of Pediatrics, Örebro University Hospital, Örebro University, Örebro, Sweden; Division of Epidemiology and Public Health, School of Medicine, University of Nottingham, Nottingham, UK; Department of Medicine, Celiac Disease Center, Columbia University College of Physicians and Surgeons, New York, NY, USA.
    Schoultz, Ida
    Örebro universitet, Institutionen för medicinska vetenskaper.
    Montgomery, Scott
    Örebro universitet, Institutionen för medicinska vetenskaper. Clinical Epidemiology Division, Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden; Department of Epidemiology and Public Health, University College London, London, UK.
    Sachs, Michael C.
    Clinical Epidemiology Division, Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden.
    Halfvarson, Jonas
    Örebro universitet, Institutionen för medicinska vetenskaper. Department of Gastroenterology.
    Olsson, Malin
    Department of Surgery, County Council of Östergötland, Linköping, Sweden.
    Hjortswang, Henrik
    Department of Gastroenterology and Department of Clinical and Experimental Medicine, Linköping University, Linköping, Sweden.
    Bengtsson, Jonas
    Department of Surgery, Sahlgrenska University Hospital/Östra, Gothenburg, Sweden.
    Strid, Hans
    Department of Internal Medicine, Södra Älvsborgs Hospital, Borås, Sweden.
    Andersson, Marie
    Department of Internal Medicine, Södra Älvsborgs Hospital, Borås, Sweden.
    Jäghult, Susanna
    Stockholm Gastro Center, Karolinska Institutet, Stockholm, Sweden.
    Eberhardson, Michael
    Department of Medicine, Karolinska Institutet, Stockholm, Sweden.
    Nordenvall, Caroline
    Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden; Department of Colorectal Cancer, Karolinska University Hospital, Stockholm, Sweden.
    Björk, Jan
    Unit of Internal Medicine, Institute Medicine Solna, Karolinska Institutet, Stockholm, Sweden; Unit of Biostatistics, Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden.
    Fagerberg, Ulrika L.
    Center for Clinical Research, Västmanland Hospital, Västerås, Sweden and Uppsala University, Uppsala, Sweden; Department of Pediatrics, Västmanland Hospital, Västerås, Sweden; Department of Women's and Children's Health, Karolinska Institutet, Stockholm, Sweden.
    Rejler, Martin
    Department of Medicine, Region Jönköping County Council, Jönköping, Sweden; Jönköping Academy for Improvement of Health and Welfare, Jönköping University, Jönköping, Sweden.
    Grip, Olof
    Department of Gastroenterology, Skåne University Hospital, Malmö, Sweden.
    Karling, Pontus
    Department of Public Health and Clinical Medicine, Umeå University, Umeå, Sweden.
    Block, Mattias
    Department of Surgery, Institute of Clinical Sciences, Sahlgrenska Academy at University of Gothenburg, SSORG - Scandinavian Surgical Outcomes Research Group, Sahlgrenska University Hospital/Östra, Gothenburg, Sweden.
    Angenete, Eva
    Department of Surgery, SSORG - Scandinavian Surgical Outcomes Research Group, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden; Department of Surgery, Region Västra Götaland, Sahlgrenska University Hospital/Östra, Gothenburg, Sweden.
    Hellström, Per M.
    Department of Gastroenterology, Skåne University Hospital, Malmö, Sweden.
    Gustavsson, Anders
    Department of Internal Medicine, Central Hospital, Karlstad, Sweden; Department of Medical Sciences, Uppsala University, Uppsala, Sweden.
    The use of ICD codes to identify IBD subtypes and phenotypes of the Montreal classification in the Swedish National Patient Register2020Ingår i: Scandinavian Journal of Gastroenterology, ISSN 0036-5521, E-ISSN 1502-7708, Vol. 55, nr 4, s. 430-435Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Introduction: Whether data on International Classification of Diseases (ICD)-codes from the Swedish National Patient Register (NPR) correctly correspond to subtypes of inflammatory bowel disease (IBD) and phenotypes of the Montreal classification scheme among patients with prevalent disease is unknown.

    Materials and methods: We obtained information on IBD subtypes and phenotypes from the medical records of 1403 patients with known IBD who underwent biological treatment at ten Swedish hospitals and retrieved information on their IBD-associated diagnostic codes from the NPR. We used previously described algorithms to define IBD subtypes and phenotypes. Finally, we compared these register-generated subtypes and phenotypes with the corresponding information from the medical records and calculated positive predictive values (PPV) with 95% confidence intervals.

    Results: Among patients with clinically confirmed disease and diagnostic listings of IBD in the NPR (N = 1401), the PPV was 97 (96-99)% for Crohn's disease, 98 (97-100)% for ulcerative colitis, and 8 (4-11)% for IBD-unclassified. The overall accuracy for age at diagnosis was 95% (when defined as A1, A2, or A3). Examining the validity of codes representing disease phenotype, the PPV was 36 (32-40)% for colonic Crohn's disease (L2), 61 (56-65)% for non-stricturing/non-penetrating Crohn's disease behaviour (B1) and 83 (78-87)% for perianal disease. Correspondingly, the PPV was 80 (71-89)% for proctitis (E1)/left-sided colitis (E2) in ulcerative colitis.

    Conclusions: Among people with known IBD, the NPR is a reliable source of data to classify most subtypes of prevalent IBD, even though misclassification commonly occurred in Crohn's disease location and behaviour and also among IBD-unclassified patients.

  • 3.
    Visuri, Isabella
    et al.
    Örebro universitet, Institutionen för medicinska vetenskaper. Department of Gastroenterology.
    Eriksson, Carl
    Örebro universitet, Institutionen för medicinska vetenskaper. Region Örebro län. Department of Gastroenterology.
    Mårdberg, E.
    Örebro University, Department of Gastroenterology, Faculty of Medicine and Health, Örebro, Sweden.
    Grip, O.
    Skåne University Hospital, Department of Gastroenterology, Malmö, Sweden.
    Gustavsson, A.
    Central Hospital, Department of Internal Medicine, Karlstad, Sweden.
    Hjortswang, H.
    Linköping University, Department of Clinical and Experimental Medicine, Linköping, Sweden; Linköping University, Department of Gastroenterology, Linköping, Sweden.
    Karling, P.
    Umeå University, Department of Public Health and Clinical Medicine, Umeå, Sweden.
    Montgomery, Scott
    Örebro universitet, Institutionen för medicinska vetenskaper. Region Örebro län. University College London, Department of Epidemiology and Public Health, London, UK; Karolinska Institutet, Clinical Epidemiology Unit, Department of Medicine Solna, Stockholm, Sweden.
    Myrelid, P.
    Linköping University, Department of Clinical and Experimental Medicine, Linköping, Sweden; Linköping University Hospital, Department of Surgery, Linköping, Sweden.
    Olén, O.
    Karolinska Institutet, Clinical Epidemiology Unit, Department of Medicine Solna, Stockholm, Sweden; Stockholm South General Hospital, Sachs’ Children and Youth Hospital, Stockholm, Sweden; Karolinska Institutet, Department of Clinical Science and Education Södersjukhuset, Stockholm, Sweden .
    Ludvigsson, Jonas F.
    Örebro universitet, Institutionen för medicinska vetenskaper. Region Örebro län. Karolinska Institutet, Department of Medical Epidemiology and Biostatistics, Stockholm, Sweden; Örebro University Hospital, Department of Pediatrics, Örebro, Sweden.
    Halfvarson, Jonas
    Örebro universitet, Institutionen för medicinska vetenskaper. Department of Gastroenterology.
    Anti-TNF agent drug survival in patients with IBD: real-world comparisons of individual anti-TNF agents based on the Swedish National Quality Registry for IBD (SWIBREG)2019Ingår i: Journal of Crohn's & Colitis, ISSN 1873-9946, E-ISSN 1876-4479, Vol. 13, nr Suppl. 1, s. S443-S444Artikel i tidskrift (Övrigt vetenskapligt)
1 - 3 av 3
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