Asian Spine J.  2016 Oct;10(5):877-885. 10.4184/asj.2016.10.5.877.

Validation of the ECOS-16 Questionnaire in Koreans with Osteoporosis

• Lee JS
• Son SM
• Goh TS
• Kim TH
• Noh EY

• KMID: 2354811
• DOI: http://doi.org/10.4184/asj.2016.10.5.877

Abstract

STUDY DESIGN: Prospective study. PURPOSE: To evaluate the reliability and validity of the adapted Korean version of the Quality of Life Questionnaire of the European Foundation for Osteoporosis (ECOS-16). OVERVIEW OF LITERATURE: The validity of the Korean version of ECOS-16 has not been completely demonstrated.
METHODS
Translation/retranslation of the English version of ECOS-16, and full cross-cultural adaptation were performed. The Korean version of a visual analog scale measure of pain, and the Korean versions of ECOS-16 and of the previously validated short form-36 (SF-36) were mailed to 158 consecutive patients with osteoporosis. Factor analysis and reliability assessment using kappa statistics of agreement for each item, intraclass correlation coefficient, and Cronbach's α were done. Construct validity was evaluated by comparing responses to ECOS-16 with responses to SF-36 using Pearson's correlation coefficient.
RESULTS
Factor analysis extracted three factors. All items had a kappa statistics of agreement >0.6. The ECOS-16 showed good test/re-test reliability (0.8469) and internal consistency of Cronbach's α (0.897). The Korean version of ECOS-16 showed significant correlation with SF-36 total scores and with single SF-36 domains scores.
CONCLUSIONS
The adapted Korean version of the ECOS-16 was successfully translated and showed acceptable measurement properties. It is considered suitable for outcome assessments in Korean patients with osteoporosis.

Keyword

Osteoporosis; ECOS-16

MeSH Terms

Humans
Osteoporosis*
Postal Service
Prospective Studies
Quality of Life
Reproducibility of Results
Visual Analog Scale