Rasch analysis of the forgotten joint score in patients with total hip arthroplasty

Stano, Flavia; Pellicciari, Leonardo; La Porta, Fabio; Piscitelli, Daniele; Angilecchia, Domenico; Signorelli, Maria; Giovannico, Giuseppe; Pournajaf, Sanaz; Caselli, Serena

doi:10.2340/jrm.v56.15774

Cited by 1 publication

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References 35 publications

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“…Finally, CFA can be used as a technique to preliminarily explore the dimensionality of the instrument, to obtain a sufficiently unidimensional instrument to then be subjected to Rasch analysis [ 80 ]. Indeed, Rasch analysis is a confirmatory analytical technique for validating a scale that is supposed to be unidimensional [ 80 ], therefore, the unidimensionality of different scales was first addressed with classical psychometric techniques [ 63 , 81 ] and subsequently through Rasch analysis [ 82 , 83 ].…”

Section: Discussionmentioning

confidence: 99%

Psychometric properties of the Disability of Arm Shoulder and Hand (DASH) in subjects with frozen shoulder: a reliability and validity study

Brindisino,

Venturin,

Bartoli

et al. 2024

BMC Musculoskelet Disord

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Background Frozen Shoulder (FS) is a painful condition characterized by severe pain and progressive restriction of shoulder movement, leading to functional impairment and reduced quality of life. While different Patient Reported Outcome Measurements (PROMs) tools exist for assessing shoulder diseases, few specific PROMs are validated for FS patients. Purpose This study aims to assess the psychometric properties of the Disability of Arm, Shoulder, and Hand (DASH) questionnaire in FS patients. Methods One hundred and twenty-four subjects (mean ± SD age = 55.4 ± 7.9 years; 55.6% female) diagnosed with FS were included and completed the DASH questionnaire, the Numerical Pain Rating Scale (NPRS), the Shoulder Pain and Disability Index (SPADI), and the Short-Form Health Survey 36 (SF-36). Floor or ceiling effects were investigated. Structural validity was analysed through a unidimensional Confirmatory Factor Analysis (CFA), internal consistency through Cronbach’s alpha, test-retest reliability through the Intraclass Correlation coefficient (ICC), measurement error through the Standard Error of Measurement (SEM), and the Minimum Detectable Change (MDC), and construct validity through the hypothesis testing with the correlation with the other outcome measures used. Results No floor or ceiling effects were observed. CFA confirmed a one-factor structure after addressing local item dependency (Root Mean Square Error of Approximation = 0.055; Standardized Root Mean Square Residual = 0.077; Comparative Fit Index = 0.970; Tucker-Lewis Index = 0.968). Cronbach’s alpha was high (= 0.951), and test-retest reliability was excellent (ICC = 0.999; 95% CI: 0.998-1.000). SEM was equal to 0.5 points, and MDC to 1.5 points. Construct validity was considered satisfactory as 80% of the a-priori hypotheses were met. Conclusion The DASH questionnaire demonstrated good psychometric properties in FS patients, supporting its use as a valuable tool for assessing the impact of FS in clinical and research settings.

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