The Danish version of Lymphoedema Functioning, Disability and Health Questionnaire (Lymph-ICF) for breast cancer survivors: Translation and cultural adaptation followed by validity and reliability testing
2019
ABSTRACTPurpose: To translate and culturally adapt the Lymphoedema Functioning, Disability and Health Questionnaire (Lymph-ICF) for breast cancer survivors with arm lymphedema into Danish and examine its content validity and reliability. Methods: (1) Translation and cultural adaptation was performed in 10 steps following international guidelines (International Society for Pharmacoeconomics and Outcome Research); (2) cognitive interviewing (step 7) was conducted in 15 women with breast cancer related arm lymphedema to explore understandability, interpretation, and cultural relevance; (3) after adjustments, content validity (N = 52) was explored by interviews; and (4) reliability (N = 50) examined by intraclass correlation coefficients (ICC) statistics and Cronbach alpha analysis. Results: Cognitive interviewing lead to an adapted and improved version of the translated questionnaire. Content validity was supported. Internal consistency (α) for all questions was .98 and ranged for the different domains betwe...
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