Items and dimensions for the construction of a multidimensional computerized adaptive test to measure fatigue in patients with rheumatoid arthritis

Abstract Objectives Development of an item pool to construct a future computerized adaptive test (CAT) for fatigue in rheumatoid arthritis (RA). The item pool was based on the patients' perspective and examined for face and content validity previously. This study assessed the fit of the items w...

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Veröffentlicht in:Journal of clinical epidemiology 2013-10, Vol.66 (10), p.1175-1183
Hauptverfasser: Nikolaus, Stephanie, Bode, Christina, Taal, Erik, Oostveen, Johanna C.M, Glas, Cees A.W, van de Laar, Mart A.F.J
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container_end_page 1183
container_issue 10
container_start_page 1175
container_title Journal of clinical epidemiology
container_volume 66
creator Nikolaus, Stephanie
Bode, Christina
Taal, Erik
Oostveen, Johanna C.M
Glas, Cees A.W
van de Laar, Mart A.F.J
description Abstract Objectives Development of an item pool to construct a future computerized adaptive test (CAT) for fatigue in rheumatoid arthritis (RA). The item pool was based on the patients' perspective and examined for face and content validity previously. This study assessed the fit of the items with seven predefined dimensions and examined the item pool's dimensionality structure in statistical terms. Study Design and Setting A total of 551 patients with RA participated in this study. Several steps were conducted to come from an explorative item pool to a psychometrically sound item bank. The item response theory (IRT) analysis using the generalized partial credit model was conducted for each of the seven predefined dimensions. Poorly fitting items were removed. Finally, the best possible multidimensional IRT (MIRT) model for the data was identified. Results In IRT analysis, 49 items showed insufficient item characteristics. Items with a discriminative ability below 0.60 and/or model misfit effect sizes greater than 0.10 were removed. Factor analysis on the 196 remaining items revealed three dimensions, namely severity, impact, and variability of fatigue. The dimensions were further confirmed in MIRT model analysis. Conclusion This study provided an initially calibrated item bank and showed which dimensions and items can be used for the development of a multidimensional CAT for fatigue in RA.
doi_str_mv 10.1016/j.jclinepi.2013.05.010
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The item pool was based on the patients' perspective and examined for face and content validity previously. This study assessed the fit of the items with seven predefined dimensions and examined the item pool's dimensionality structure in statistical terms. Study Design and Setting A total of 551 patients with RA participated in this study. Several steps were conducted to come from an explorative item pool to a psychometrically sound item bank. The item response theory (IRT) analysis using the generalized partial credit model was conducted for each of the seven predefined dimensions. Poorly fitting items were removed. Finally, the best possible multidimensional IRT (MIRT) model for the data was identified. Results In IRT analysis, 49 items showed insufficient item characteristics. Items with a discriminative ability below 0.60 and/or model misfit effect sizes greater than 0.10 were removed. Factor analysis on the 196 remaining items revealed three dimensions, namely severity, impact, and variability of fatigue. The dimensions were further confirmed in MIRT model analysis. Conclusion This study provided an initially calibrated item bank and showed which dimensions and items can be used for the development of a multidimensional CAT for fatigue in RA.</description><identifier>ISSN: 0895-4356</identifier><identifier>EISSN: 1878-5921</identifier><identifier>DOI: 10.1016/j.jclinepi.2013.05.010</identifier><identifier>PMID: 23958376</identifier><language>eng</language><publisher>New York, NY: Elsevier Inc</publisher><subject>Adult ; Aged ; Aged, 80 and over ; Analysis. Health state ; Arthritis, Rheumatoid - physiopathology ; Arthritis, Rheumatoid - psychology ; Biological and medical sciences ; Computerized adaptive test ; Diagnosis, Computer-Assisted ; Epidemiology ; Factor analysis ; Fatigue ; Fatigue - diagnosis ; Female ; General aspects ; Humans ; Internal Medicine ; Item response theory ; Male ; Medical sciences ; Middle Aged ; Models, Psychological ; Patient-reported outcome ; Psychometrics ; Public health. Hygiene ; Public health. Hygiene-occupational medicine ; Questionnaires ; Reproducibility of Results ; Rheumatoid arthritis ; Surveys and Questionnaires ; Young Adult</subject><ispartof>Journal of clinical epidemiology, 2013-10, Vol.66 (10), p.1175-1183</ispartof><rights>Elsevier Inc.</rights><rights>2013 Elsevier Inc.</rights><rights>2014 INIST-CNRS</rights><rights>Copyright © 2013 Elsevier Inc. 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The item pool was based on the patients' perspective and examined for face and content validity previously. This study assessed the fit of the items with seven predefined dimensions and examined the item pool's dimensionality structure in statistical terms. Study Design and Setting A total of 551 patients with RA participated in this study. Several steps were conducted to come from an explorative item pool to a psychometrically sound item bank. The item response theory (IRT) analysis using the generalized partial credit model was conducted for each of the seven predefined dimensions. Poorly fitting items were removed. Finally, the best possible multidimensional IRT (MIRT) model for the data was identified. Results In IRT analysis, 49 items showed insufficient item characteristics. Items with a discriminative ability below 0.60 and/or model misfit effect sizes greater than 0.10 were removed. Factor analysis on the 196 remaining items revealed three dimensions, namely severity, impact, and variability of fatigue. The dimensions were further confirmed in MIRT model analysis. Conclusion This study provided an initially calibrated item bank and showed which dimensions and items can be used for the development of a multidimensional CAT for fatigue in RA.</description><subject>Adult</subject><subject>Aged</subject><subject>Aged, 80 and over</subject><subject>Analysis. Health state</subject><subject>Arthritis, Rheumatoid - physiopathology</subject><subject>Arthritis, Rheumatoid - psychology</subject><subject>Biological and medical sciences</subject><subject>Computerized adaptive test</subject><subject>Diagnosis, Computer-Assisted</subject><subject>Epidemiology</subject><subject>Factor analysis</subject><subject>Fatigue</subject><subject>Fatigue - diagnosis</subject><subject>Female</subject><subject>General aspects</subject><subject>Humans</subject><subject>Internal Medicine</subject><subject>Item response theory</subject><subject>Male</subject><subject>Medical sciences</subject><subject>Middle Aged</subject><subject>Models, Psychological</subject><subject>Patient-reported outcome</subject><subject>Psychometrics</subject><subject>Public health. Hygiene</subject><subject>Public health. 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The item pool was based on the patients' perspective and examined for face and content validity previously. This study assessed the fit of the items with seven predefined dimensions and examined the item pool's dimensionality structure in statistical terms. Study Design and Setting A total of 551 patients with RA participated in this study. Several steps were conducted to come from an explorative item pool to a psychometrically sound item bank. The item response theory (IRT) analysis using the generalized partial credit model was conducted for each of the seven predefined dimensions. Poorly fitting items were removed. Finally, the best possible multidimensional IRT (MIRT) model for the data was identified. Results In IRT analysis, 49 items showed insufficient item characteristics. Items with a discriminative ability below 0.60 and/or model misfit effect sizes greater than 0.10 were removed. Factor analysis on the 196 remaining items revealed three dimensions, namely severity, impact, and variability of fatigue. The dimensions were further confirmed in MIRT model analysis. Conclusion This study provided an initially calibrated item bank and showed which dimensions and items can be used for the development of a multidimensional CAT for fatigue in RA.</abstract><cop>New York, NY</cop><pub>Elsevier Inc</pub><pmid>23958376</pmid><doi>10.1016/j.jclinepi.2013.05.010</doi><tpages>9</tpages></addata></record>
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source MEDLINE; Access via ScienceDirect (Elsevier); ProQuest Central UK/Ireland
subjects Adult
Aged
Aged, 80 and over
Analysis. Health state
Arthritis, Rheumatoid - physiopathology
Arthritis, Rheumatoid - psychology
Biological and medical sciences
Computerized adaptive test
Diagnosis, Computer-Assisted
Epidemiology
Factor analysis
Fatigue
Fatigue - diagnosis
Female
General aspects
Humans
Internal Medicine
Item response theory
Male
Medical sciences
Middle Aged
Models, Psychological
Patient-reported outcome
Psychometrics
Public health. Hygiene
Public health. Hygiene-occupational medicine
Questionnaires
Reproducibility of Results
Rheumatoid arthritis
Surveys and Questionnaires
Young Adult
title Items and dimensions for the construction of a multidimensional computerized adaptive test to measure fatigue in patients with rheumatoid arthritis
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