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An Iranian Version of the Fukushima Lumbar Spinal Stenosis Scale (FLS-25): A Validation Study

STUDY DESIGN: Cross-sectional study. PURPOSE: To translate and validate the Fukushima lumbar spinal stenosis (LSS) scale 25 (FLS-25) for use in Iran. OVERVIEW OF LITERATURE: Tools measuring patient-reported outcomes should satisfy certain psychometric properties. METHODS: FLS-25 is a self-administer...

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Autores principales: Azimi, Parisa, Montazeri, Ali
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Korean Society of Spine Surgery 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5401838/
https://www.ncbi.nlm.nih.gov/pubmed/28443168
http://dx.doi.org/10.4184/asj.2017.11.2.243
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author Azimi, Parisa
Montazeri, Ali
author_facet Azimi, Parisa
Montazeri, Ali
author_sort Azimi, Parisa
collection PubMed
description STUDY DESIGN: Cross-sectional study. PURPOSE: To translate and validate the Fukushima lumbar spinal stenosis (LSS) scale 25 (FLS-25) for use in Iran. OVERVIEW OF LITERATURE: Tools measuring patient-reported outcomes should satisfy certain psychometric properties. METHODS: FLS-25 is a self-administered scale for evaluating symptoms of LSS. A forward-backward procedure was applied to translate the questionnaire from English into Persian. A sample of patients with LSS completed the questionnaire at two points in time: once before surgery and once 6 months after the surgery. The Neurogenic Claudication Outcome Score (NCOS) was also used for assessment. The psychometric properties of FLS-25 were evaluated for internal consistency, test-retest and interobserver reliabilities, responsiveness to change, known-group comparison, and convergent validity. RESULTS: In all, 131 patients were included in the study. The mean age of the patients was 61.4 (standard deviation, 11.1) years. The Cronbach's alpha coefficient for FLS-25 was 0.89. Test-retest reliability as carried out by the intraclass correlation coefficient was 0.94 (95% confidence interval, 0.95). Interobserver agreement as measured by the kappa statistics also was found to be acceptable (kappa value, 0.88), and validity was found to be satisfactory. The instrument was able to discriminate between the subgroups of patients who differed in symptom severity. The correlation between FLS-25 and NCOS scores was excellent, indicating good convergent validity (r=0.82, p<0.001). The results also indicated that the instrument was responsive to change (p<0.001). CONCLUSIONS: The Iranian version of FLS-25 performed well, and the findings suggest that it is a valid measure of symptom severity in LSS patients.
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spelling pubmed-54018382017-04-25 An Iranian Version of the Fukushima Lumbar Spinal Stenosis Scale (FLS-25): A Validation Study Azimi, Parisa Montazeri, Ali Asian Spine J Clinical Study STUDY DESIGN: Cross-sectional study. PURPOSE: To translate and validate the Fukushima lumbar spinal stenosis (LSS) scale 25 (FLS-25) for use in Iran. OVERVIEW OF LITERATURE: Tools measuring patient-reported outcomes should satisfy certain psychometric properties. METHODS: FLS-25 is a self-administered scale for evaluating symptoms of LSS. A forward-backward procedure was applied to translate the questionnaire from English into Persian. A sample of patients with LSS completed the questionnaire at two points in time: once before surgery and once 6 months after the surgery. The Neurogenic Claudication Outcome Score (NCOS) was also used for assessment. The psychometric properties of FLS-25 were evaluated for internal consistency, test-retest and interobserver reliabilities, responsiveness to change, known-group comparison, and convergent validity. RESULTS: In all, 131 patients were included in the study. The mean age of the patients was 61.4 (standard deviation, 11.1) years. The Cronbach's alpha coefficient for FLS-25 was 0.89. Test-retest reliability as carried out by the intraclass correlation coefficient was 0.94 (95% confidence interval, 0.95). Interobserver agreement as measured by the kappa statistics also was found to be acceptable (kappa value, 0.88), and validity was found to be satisfactory. The instrument was able to discriminate between the subgroups of patients who differed in symptom severity. The correlation between FLS-25 and NCOS scores was excellent, indicating good convergent validity (r=0.82, p<0.001). The results also indicated that the instrument was responsive to change (p<0.001). CONCLUSIONS: The Iranian version of FLS-25 performed well, and the findings suggest that it is a valid measure of symptom severity in LSS patients. Korean Society of Spine Surgery 2017-04 2017-04-12 /pmc/articles/PMC5401838/ /pubmed/28443168 http://dx.doi.org/10.4184/asj.2017.11.2.243 Text en Copyright © 2017 by Korean Society of Spine Surgery http://creativecommons.org/licenses/by-nc/4.0/ This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Clinical Study
Azimi, Parisa
Montazeri, Ali
An Iranian Version of the Fukushima Lumbar Spinal Stenosis Scale (FLS-25): A Validation Study
title An Iranian Version of the Fukushima Lumbar Spinal Stenosis Scale (FLS-25): A Validation Study
title_full An Iranian Version of the Fukushima Lumbar Spinal Stenosis Scale (FLS-25): A Validation Study
title_fullStr An Iranian Version of the Fukushima Lumbar Spinal Stenosis Scale (FLS-25): A Validation Study
title_full_unstemmed An Iranian Version of the Fukushima Lumbar Spinal Stenosis Scale (FLS-25): A Validation Study
title_short An Iranian Version of the Fukushima Lumbar Spinal Stenosis Scale (FLS-25): A Validation Study
title_sort iranian version of the fukushima lumbar spinal stenosis scale (fls-25): a validation study
topic Clinical Study
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5401838/
https://www.ncbi.nlm.nih.gov/pubmed/28443168
http://dx.doi.org/10.4184/asj.2017.11.2.243
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