Publication date: Available online 18 May 2017
Source:The Spine Journal
Author(s): Antonio Caronni, Luciana Sciumè, Sabrina Donzelli, Fabio Zaina, Stefano Negrini
Background Context– Spinal deformities are commonly associated with poor HRQOL. Several questionnaires (e.g. SRS-24 and SRS-22) have been developed to evaluate HRQOL in these conditions. In adults as well as during growth, the HRQOL is considered one of the most relevant outcomes of both conservative and surgical treatment. Rasch analysis is a powerful statistical technique for developing high quality and valid questionnaires. The SRS-24 and SRS-22 have been evaluated using the Rasch analysis, but showed poor measurement properties. Thus, a proper measure of HRQOL in people with a spine condition is still missing.Purpose– To develop a new questionnaire totally Rasch-consistent for measuring the HRQOL in young people with a spine condition.Study Design– Cross-sectional study for developing a new health-related quality of life (HRQOL) measure.Patient Sample– 402 participants with adolescent idiopathic scoliosis or Scheuermann juvenile kyphosis.Outcome Measures– The ISYQOL questionnaire.Methods– The study consisted of different stages: a conventional approach content analysis, an opinion poll among clinicians trained in spine deformities and the Rasch analysis (partial credit model).Results– The Rasch analysis showed that all items of the ISYQOL questionnaire had ordered thresholds and a good fit to the model. Differential item functioning (DIF) was present for item 1 with bracing only and was solved with a conventional items splitting procedure. The ISYQOL item map spans an adequate range of HRQOL. The principal component analysis for Rasch residuals showed, in practical terms, the ISYQOL uni-dimensionality. ISYQOL reliability is high enough so that approximately three significantly different levels of HRQOL can be discerned. Two questionnaire versions are provided for patients with and without the brace, respectively.Conclusions– ISYQOL is the first HRQOL questionnaire developed according to the Rasch analysis. It was developed in a conservative treatment setting for all type of spinal deformities, including also patients with surgical curves. Validation in many languages are already underway.
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Παρασκευή 19 Μαΐου 2017
ISYQOL: a rasch-consistent questionnaire for measuring health-related quality of life in adolescents with spinal deformities
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Αλέξανδρος Γ. Σφακιανάκης Medicine by Alexandros G. Sfakianakis,Anapafseos 5 Agios Nikolaos 72100 Crete Greece,00302841026182,0030693260717...
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