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KMID : 1189320170110040586
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Asian Spine Journal
2017 Volume.11 No. 4 p.586 ~ p.593
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Validation of the Iranian Version of the ECOS-16 Questionnaire in Patients with Osteoporotic Vertebral Fractures
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Azimi Parisa
Yazdanian Taravat
Montazeri Ali
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Abstract
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Study Design: Prospective clinical study.
Purpose: To translate and validate the Quality of Life Questionnaire of the European Foundation for Osteoporosis (ECOS-16) in patients with osteoporotic vertebral fractures in Iran.
Overview of Literature: It is important to assess the psychometric properties of instruments measuring patient-reported outcomes.
Methods: The translation was performed using the backward-forward translation method. The final version was generated by consensus among the translators. Every woman who had a T-score of
Results: Of 137 recruited women, 39 underwent surgery and 98 did not. Analysis of the ECOS-16 scales showed an appropriate reliability with Cronbach's alpha of >0.70 for all scales. Test-retest reliability as indicated by intraclass correlation coefficient was found to be 0.85 (0.68?0.91). Additionally, the correlation of each item with its hypothesized domain of the ECOS-16 showed acceptable results, suggesting that the items had a substantial relationship with their own domains. Further analysis also indicated that the questionnaire was responsive to change (effect size, 0.85; standardized response mean, 0.93) (p<0.001). Significant correlations existed between scores of similar subscales of ECOS-16 and SF-36 (p<0.001).
Conclusions: ECOS-16 is an acceptable, reliable, valid, and responsive measure to assess the quality of life in patients with osteoporotic vertebral fractures.
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KEYWORD
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Iran, ECOS-16, Validity, Osteoporosis
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