oru.sePublications
Change search
Link to record
Permanent link

Direct link
BETA
Visuri, Isabella
Publications (3 of 3) Show all publications
Shrestha, S., Olén, O., Eriksson, C., Everhov, Å. H., Myrelid, P., Visuri, I., . . . Gustavsson, A. (2020). The use of ICD codes to identify IBD subtypes and phenotypes of the Montreal classification in the Swedish National Patient Register. Scandinavian Journal of Gastroenterology, 55(4), 430-435
Open this publication in new window or tab >>The use of ICD codes to identify IBD subtypes and phenotypes of the Montreal classification in the Swedish National Patient Register
Show others...
2020 (English)In: Scandinavian Journal of Gastroenterology, ISSN 0036-5521, E-ISSN 1502-7708, Vol. 55, no 4, p. 430-435Article in journal (Refereed) Published
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.

Place, publisher, year, edition, pages
Taylor & Francis, 2020
Keywords
Crohn’s disease, ICD-codes, Inflammatory bowel disease, Montreal classification, National Patient Register, Swedish Quality Register for IBD, epidemiology, ulcerative colitis, validation
National Category
Gastroenterology and Hepatology
Identifiers
urn:nbn:se:oru:diva-81780 (URN)10.1080/00365521.2020.1740778 (DOI)000532826000007 ()32370571 (PubMedID)
Available from: 2020-05-11 Created: 2020-05-11 Last updated: 2020-05-29Bibliographically approved
Visuri, I., Eriksson, C., Mårdberg, E., Grip, O., Gustavsson, A., Hjortswang, H., . . . Halfvarson, J. (2019). 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). Journal of Crohn's & Colitis, 13(Suppl. 1), S443-S444
Open this publication in new window or tab >>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)
Show others...
2019 (English)In: Journal of Crohn's & Colitis, ISSN 1873-9946, E-ISSN 1876-4479, Vol. 13, no Suppl. 1, p. S443-S444Article in journal, Meeting abstract (Other academic) Published
Place, publisher, year, edition, pages
Oxford University Press, 2019
National Category
Gastroenterology and Hepatology
Identifiers
urn:nbn:se:oru:diva-73336 (URN)10.1093/ecco-jcc/jjy222.773 (DOI)000460544502205 ()
Available from: 2019-03-26 Created: 2019-03-26 Last updated: 2019-03-26Bibliographically approved
Eriksson, C., Bergemalm, D., Vigren, L., Nilsson, L., Visuri, I., Hjortswang, H., . . . Halfvarson, J. (2018). 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-SWIBREG. Paper presented at 13th Congress of ECCO – European Crohn’s and Colitis Organisation, Vienna, Austria, February 14-17, 2018. Journal of Crohn's & Colitis, 12(Suppl. 1), S409-S410
Open this publication in new window or tab >>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-SWIBREG
Show others...
2018 (English)In: Journal of Crohn's & Colitis, ISSN 1873-9946, E-ISSN 1876-4479, Vol. 12, no Suppl. 1, p. S409-S410Article in journal, Meeting abstract (Other academic) Published
Place, publisher, year, edition, pages
Oxford University Press, 2018
National Category
Gastroenterology and Hepatology
Identifiers
urn:nbn:se:oru:diva-66750 (URN)000427318901372 ()
Conference
13th Congress of ECCO – European Crohn’s and Colitis Organisation, Vienna, Austria, February 14-17, 2018
Note

Funding Agency:

MSD

Available from: 2018-04-26 Created: 2018-04-26 Last updated: 2018-08-31Bibliographically approved
Organisations

Search in DiVA

Show all publications