Ensuring International Equivalence of Quality of Life Measures: Problems and Approaches to Solutions
Equivalence of international versions of a quality of life measure is vital to its use in research. Along the lines of an approach proposed in cross-cultural psychology, the functional, scale, operational and metric equivalence criteria are outlined and elaborated using translation and testing of the SF-36 as an example. The problems faced in examining and meeting these criteria, as well as possible procedural solutions, are discussed.
KeywordsLife Measure Nottingham Health Profile Original Instrument International Equivalence Convergent Validity Testing
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