Assessing internal construct validity of DAPSA and DAPSA28 in psoriatic arthritis: a European observational study using confirmatory factor analysis and additional psychometric testing.

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Title: Assessing internal construct validity of DAPSA and DAPSA28 in psoriatic arthritis: a European observational study using confirmatory factor analysis and additional psychometric testing.
Authors: Jørgensen JB; Copenhagen Center for Arthritis Research, Center for Rheumatology and Spine Diseases, Rigshospitalet, Glostrup, Denmark.; Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark., Christensen KB; Department of Public Health, University of Copenhagen, Copenhagen, Denmark., Michelsen B; Copenhagen Center for Arthritis Research, Center for Rheumatology and Spine Diseases, Rigshospitalet, Glostrup, Denmark.; Center for treatment of Rheumatic and Musculoskeletal Diseases (REMEDY), Diakonhjemmet Hospital, Oslo, Norway.; Research Unit, Sørlandet Sykehus HF, Kristiansand, Norway., Loft AG; Department of Rheumatology and DANBIO Aarhus University Hospital, Aarhus, Denmark.; Department of Clinical Medicine, Aarhus University, Aarhus, Denmark., Horskjær Rasmussen S; Copenhagen Center for Arthritis Research, Center for Rheumatology and Spine Diseases, Rigshospitalet, Glostrup, Denmark.; Copenhagen Research Center for Biological and Precision Psychiatry, Mental Health Centre Copenhagen, Copenhagen University Hospital, Copenhagen, Denmark., Heberg J; Copenhagen Center for Arthritis Research, Center for Rheumatology and Spine Diseases, Rigshospitalet, Glostrup, Denmark., Hetland ML; Copenhagen Center for Arthritis Research, Center for Rheumatology and Spine Diseases, Rigshospitalet, Glostrup, Denmark.; Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark., Zavada J; Institute of Rheumatology, Prague, Czech Republic., Pavelka K; Institute of Rheumatology, Prague, Czech Republic.; Department of Rheumatology, First Faculty of Medicine, Charles University, Prague, Czech Republic., Iannone F; Rheumatology Unit, DiMePReJ, University of Bari, Bari, Italy., Conti F; Department of Clinical Internal, Anesthesiological and Cardiovascular Sciences, Sapienza University of Rome, Rome, Italy., Borges J; Instituto Português de Reumatologia, Lisbon, Portugal., Codreanu C; Center for Rheumatic Diseases, University of Medicine and Pharmacy, Bucharest, Romania., Mogosan C; Center for Rheumatic Diseases, University of Medicine and Pharmacy, Bucharest, Romania., Glintborg B; Copenhagen Center for Arthritis Research, Center for Rheumatology and Spine Diseases, Rigshospitalet, Glostrup, Denmark.; Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark.; DANBIO Rigshospitalet, Glostrup, Denmark., Ciurea A; Department of Rheumatology, University Hospital Zurich, University of Zurich, Zürich, Switzerland., Nissen MJ; Department of Rheumatology, Geneva University Hospitals, Geneva, Switzerland., Nordström D; Departments of Medicine and Rheumatology, Helsinki University Central Hospital, Helsinki, Finland., Kuusalo L; Department of Rheumatology, Division of Medicine, Turku University Central Hospital, Turku, Finland., Laas K; Department of Rheumatology, Division of Medicine, Turku University Central Hospital, Turku, Finland.; Department of Internal Medicine, University of Turku, Turku, Finland., Vorobjov S; Department of Rheumatology, East Tallinn Central Hospital, Tallinn, Estonia., Gudbjornsson B; Centre for Rheumatology Research, Landspitali University Hospital, Reykjavík, Iceland.; Faculty of Medicine, University of Iceland, Reykjavík, Iceland., Love TJ; University of Iceland, Faculty of Medicine, Reykjavík, Iceland.; Landspitali University Hospital, Reykjavík, Iceland., Østergaard M; Copenhagen Center for Arthritis Research, Center for Rheumatology and Spine Diseases, Rigshospitalet, Glostrup, Denmark.; Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark., Ørnbjerg LM; Copenhagen Center for Arthritis Research, Center for Rheumatology and Spine Diseases, Rigshospitalet, Glostrup, Denmark lykke.midtboell.oernbjerg@regionh.dk.
Source: RMD open [RMD Open] 2025 Dec 23; Vol. 11 (4). Date of Electronic Publication: 2025 Dec 23.
Publication Type: Journal Article; Observational Study
Journal Info: Publisher: BMJ Publishing Group Country of Publication: England NLM ID: 101662038 Publication Model: Electronic Cited Medium: Internet ISSN: 2056-5933 (Electronic) Linking ISSN: 20565933 NLM ISO Abbreviation: RMD Open Subsets: MEDLINE
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  Data: Assessing internal construct validity of DAPSA and DAPSA28 in psoriatic arthritis: a European observational study using confirmatory factor analysis and additional psychometric testing.
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  Data: <searchLink fieldCode="AU" term="%22Jørgensen+JB%22">Jørgensen JB</searchLink>; Copenhagen Center for Arthritis Research, Center for Rheumatology and Spine Diseases, Rigshospitalet, Glostrup, Denmark.; Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark.<br /><searchLink fieldCode="AU" term="%22Christensen+KB%22">Christensen KB</searchLink>; Department of Public Health, University of Copenhagen, Copenhagen, Denmark.<br /><searchLink fieldCode="AU" term="%22Michelsen+B%22">Michelsen B</searchLink>; Copenhagen Center for Arthritis Research, Center for Rheumatology and Spine Diseases, Rigshospitalet, Glostrup, Denmark.; Center for treatment of Rheumatic and Musculoskeletal Diseases (REMEDY), Diakonhjemmet Hospital, Oslo, Norway.; Research Unit, Sørlandet Sykehus HF, Kristiansand, Norway.<br /><searchLink fieldCode="AU" term="%22Loft+AG%22">Loft AG</searchLink>; Department of Rheumatology and DANBIO Aarhus University Hospital, Aarhus, Denmark.; Department of Clinical Medicine, Aarhus University, Aarhus, Denmark.<br /><searchLink fieldCode="AU" term="%22Horskjær+Rasmussen+S%22">Horskjær Rasmussen S</searchLink>; Copenhagen Center for Arthritis Research, Center for Rheumatology and Spine Diseases, Rigshospitalet, Glostrup, Denmark.; Copenhagen Research Center for Biological and Precision Psychiatry, Mental Health Centre Copenhagen, Copenhagen University Hospital, Copenhagen, Denmark.<br /><searchLink fieldCode="AU" term="%22Heberg+J%22">Heberg J</searchLink>; Copenhagen Center for Arthritis Research, Center for Rheumatology and Spine Diseases, Rigshospitalet, Glostrup, Denmark.<br /><searchLink fieldCode="AU" term="%22Hetland+ML%22">Hetland ML</searchLink>; Copenhagen Center for Arthritis Research, Center for Rheumatology and Spine Diseases, Rigshospitalet, Glostrup, Denmark.; Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark.<br /><searchLink fieldCode="AU" term="%22Zavada+J%22">Zavada J</searchLink>; Institute of Rheumatology, Prague, Czech Republic.<br /><searchLink fieldCode="AU" term="%22Pavelka+K%22">Pavelka K</searchLink>; Institute of Rheumatology, Prague, Czech Republic.; Department of Rheumatology, First Faculty of Medicine, Charles University, Prague, Czech Republic.<br /><searchLink fieldCode="AU" term="%22Iannone+F%22">Iannone F</searchLink>; Rheumatology Unit, DiMePReJ, University of Bari, Bari, Italy.<br /><searchLink fieldCode="AU" term="%22Conti+F%22">Conti F</searchLink>; Department of Clinical Internal, Anesthesiological and Cardiovascular Sciences, Sapienza University of Rome, Rome, Italy.<br /><searchLink fieldCode="AU" term="%22Borges+J%22">Borges J</searchLink>; Instituto Português de Reumatologia, Lisbon, Portugal.<br /><searchLink fieldCode="AU" term="%22Codreanu+C%22">Codreanu C</searchLink>; Center for Rheumatic Diseases, University of Medicine and Pharmacy, Bucharest, Romania.<br /><searchLink fieldCode="AU" term="%22Mogosan+C%22">Mogosan C</searchLink>; Center for Rheumatic Diseases, University of Medicine and Pharmacy, Bucharest, Romania.<br /><searchLink fieldCode="AU" term="%22Glintborg+B%22">Glintborg B</searchLink>; Copenhagen Center for Arthritis Research, Center for Rheumatology and Spine Diseases, Rigshospitalet, Glostrup, Denmark.; Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark.; DANBIO Rigshospitalet, Glostrup, Denmark.<br /><searchLink fieldCode="AU" term="%22Ciurea+A%22">Ciurea A</searchLink>; Department of Rheumatology, University Hospital Zurich, University of Zurich, Zürich, Switzerland.<br /><searchLink fieldCode="AU" term="%22Nissen+MJ%22">Nissen MJ</searchLink>; Department of Rheumatology, Geneva University Hospitals, Geneva, Switzerland.<br /><searchLink fieldCode="AU" term="%22Nordström+D%22">Nordström D</searchLink>; Departments of Medicine and Rheumatology, Helsinki University Central Hospital, Helsinki, Finland.<br /><searchLink fieldCode="AU" term="%22Kuusalo+L%22">Kuusalo L</searchLink>; Department of Rheumatology, Division of Medicine, Turku University Central Hospital, Turku, Finland.<br /><searchLink fieldCode="AU" term="%22Laas+K%22">Laas K</searchLink>; Department of Rheumatology, Division of Medicine, Turku University Central Hospital, Turku, Finland.; Department of Internal Medicine, University of Turku, Turku, Finland.<br /><searchLink fieldCode="AU" term="%22Vorobjov+S%22">Vorobjov S</searchLink>; Department of Rheumatology, East Tallinn Central Hospital, Tallinn, Estonia.<br /><searchLink fieldCode="AU" term="%22Gudbjornsson+B%22">Gudbjornsson B</searchLink>; Centre for Rheumatology Research, Landspitali University Hospital, Reykjavík, Iceland.; Faculty of Medicine, University of Iceland, Reykjavík, Iceland.<br /><searchLink fieldCode="AU" term="%22Love+TJ%22">Love TJ</searchLink>; University of Iceland, Faculty of Medicine, Reykjavík, Iceland.; Landspitali University Hospital, Reykjavík, Iceland.<br /><searchLink fieldCode="AU" term="%22Østergaard+M%22">Østergaard M</searchLink>; Copenhagen Center for Arthritis Research, Center for Rheumatology and Spine Diseases, Rigshospitalet, Glostrup, Denmark.; Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark.<br /><searchLink fieldCode="AU" term="%22Ørnbjerg+LM%22">Ørnbjerg LM</searchLink>; Copenhagen Center for Arthritis Research, Center for Rheumatology and Spine Diseases, Rigshospitalet, Glostrup, Denmark lykke.midtboell.oernbjerg@regionh.dk.
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