University of Oulu

J Paltta, S Kortelainen, M Käyrä, L Pirilä, J Huhtakangas & A Palomäki (2023) The validity of systemic sclerosis diagnoses in two university hospitals in Finland, Scandinavian Journal of Rheumatology, 52:1, 84-87, DOI: 10.1080/03009742.2022.2056999

The validity of systemic sclerosis diagnoses in two university hospitals in Finland

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Author: Paltta, J.1,2; Kortelainen, S.1; Käyrä, M.3;
Organizations: 1Centre for Rheumatology and Clinical Immunology, Division of Medicine, Turku University Hospital, Turku, Finland
2Department of Medicine, University of Turku, Turku, Finland
3Division of Rheumatology, Department of Internal Medicine, Oulu University Hospital, Oulu, Finland
4Medical Research Centre Oulu, Oulu, Finland
5Division of Rheumatology, Department of Internal Medicine, Kuopio University Hospital, Kuopio, Finland
Format: article
Version: published version
Access: open
Online Access: PDF Full Text (PDF, 0.6 MB)
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Language: English
Published: Informa, 2022
Publish Date: 2023-08-10


Objective: This study aimed to determine the validity of systemic sclerosis (SSc) diagnoses in Finnish university hospitals.

Method: Electronic medical records for 385 patients with a registered diagnosis of SSc (ICD-10 code M34) in two Finnish university hospitals from 2008 to 2018 were reviewed to assess whether each patient’s diagnosis was correct.

Results: The positive predictive value (PPV) of a diagnosis of SSc was 0.66 when fulfilment of the 2013 American College of Rheumatology/European League Against Rheumatism (ACR/EULAR) classification criteria for SSc was required; the PPV was 0.75 if patients meeting the 2001 LeRoy and Medsger classification criteria for early SSc were also included. When a diagnosis of SSc was made in a department of rheumatology, the PPV was 0.78, and 0.90 when including patients with early SSc. For the more specific diagnosis of limited cutaneous SSc (lcSSc), the PPV was 0.80, and 0.95 when including early SSc. For an lcSSc diagnosis made in rheumatology, the PPV was 0.81, and 0.97 with early SSc included.

Conclusion: These results demonstrate that in these two Finnish university hospitals, the diagnostic validity of a diagnosis of SSc was good if it was diagnosed in the department of rheumatology. For a more specific diagnosis of lcSSc, the most prevalent form of SSc in Finland, the validity was good even when registered in any department.

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Series: Scandinavian journal of rheumatology
ISSN: 0300-9742
ISSN-E: 1502-7732
ISSN-L: 0300-9742
Volume: 52
Issue: 1
Pages: 84 - 87
DOI: 10.1080/03009742.2022.2056999
Type of Publication: A1 Journal article – refereed
Field of Science: 3121 General medicine, internal medicine and other clinical medicine
Funding: This work was supported by research grants from the Finnish Founda-tion for Rheumatic Diseases to JP, SK, and MK; Turunmaa Duodecim Society to JP; Turku University Hospital Education and Research Foundation to SK and AP, the Tampere Rheumatism Association to MK; the Finnish Medical Foundation to JH; and Finnish Governmen-tal VTR-funding to JP and AP.
Copyright information: © 2022 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group. This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives License ( licenses/by-nc-nd/4.0/), which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is properly cited, and is not altered, transformed, or built upon in any way..