Reliability and validity of the Turkish version of the ECOS 16 questionnaire in postmenopausal osteoporosis

Abstract

Aim: The purpose of this study was to develop a Turkish version of ECOS 16 Questionnaire and assess its reliability and validity.

Methods: Sixty four women with postmenopausal osteoporosis were included in the study. It was mandatory for all patients to be Turkish literate and without symptoms of dementia. Patients who were diagnosed as secondary osteoporosis by clinical and laboratory examinations were excluded from the study. After translation process, the Turkish version of the scale was applied to each participant twice with an interval of 2 weeks. For reliability study, internal consistency (Chronbach alpha) of ECOS 16 total score and test-retest intraclass correlation coefficient (ICC) were calculated. Validation study was assessed by correlating the scale with QUALEFFO 41.

Results: The mean age at menopause and age of patients were 45.61+/-6.04 years and 59.91+/-8.69 years respectively. Chronbach alpha of the Turkish version of the ECOS 16 was 0.90. The test-retest reliability (ICC) of the Turkish version of the ECOS 16 was determined as 0.83 for the total score, and ranged between 0.72-0.88 for individual items. In terms of validity; the Turkish version of ECOS 16 correlated significantly with QUALEFFO 41 (r=0.844 P<0.0001).

Conclusions: . The Turkish version of the ECOS 16 is a reliable and valid questionnaire to be used in the evaluation of Turkish women with postmenopausal osteoporosis.