Développement et validation du questionnaire Flare-OA pour la mesure d’une poussée d’arthrose du genou et de la hanche

Traoré, Youssouf; Epstein, Jonathan; Spitz, Élisabeth; March, L.; Maillefert, Jean-Françis; Rutherford, Claudia; Ricatte, Camille; Alleyrat, Camille; Cross, Mervyn J.; King, Lisa A.; Callahan, Laura; Fautrel, B.; Buttel, Thomas; Hawker, G.A.; Hunter, D.; Guillemin, Françis

doi:10.1016/j.respe.2020.11.011

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“…A measurement instrument has been developed using a dual-language approach (French and English) following a mixed-method study in an international setting involving OA patients, clinicians, and scientists. The newly developed Flare-OA self-report questionnaire measuring are in knee and hip OA in the patient perspective (19 items on a numerical rating scale in 5 dimensions) showed good psychometric properties assessed along classical test theory (17). The aim of the present study was to determine its scaling properties by Rasch analysis and to present evidence for a re ned scalable version for optimal use in clinical research practice.…”

Section: Introductionmentioning

confidence: 98%

The Flare-OA-16 questionnaire measuring flare in knee and hip osteoarthritis in the patient perspective: scale reduction and validation using a Rasch model

Queiroga

Epstein

Erpelding

et al. 2023

Preprint

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Background The recent Flare-OA questionnaire measuring flare in knee and hip osteoarthritis (OA) (19 items in 5 dimensions, numerical rating scale) showed good psychometric properties along with classical test theory. This study aimed to determine its scaling properties by Rasch analysis and to present evidence for a refined scalable version. Methods The participants were 398 subjects with mean age 64 years (SD = 8.1), 70.4% women, recruited from Australia, France, and the United States, with clinically and radiologically symptomatic knee or hip OA, who completed an online survey. The sample was split into derivation and validation subsamples, stratified by country and joint. Rasch analysis examined differential item functioning (DIF) for sex, age, country and joint. A confirmatory factor analysis (CFA) and a convergent validity were performed to document the psychometric properties of the short version. Results To fit the Rasch model, we reordered thresholds of answering modalities when necessary. Two items were removed. A local dependency between 2 items was solved by combining items modalities into a super-item. A uniform DIF (expected and non-removed) was identified for one item that was split by joint, and a non-uniform DIF for one item for age and country (removed in this case). The person-item threshold distribution showed a well focused scale; the CFA and convergent validity showed good fit indicators for the short version. Conclusions The Rasch analysis was helpful in guiding the decision to refine the measurement instrument. After analysis, the Flare-OA-16 questionnaire self-report questionnaire is available for use in clinical research.

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Section: Introductionmentioning

confidence: 98%