Background: The Upper Limb Functional Index (ULFI) is an internationally widely used outcome measure with robust, valid psychometric properties. The purpose of study is to develop and validate a ULFI Spanish-version (ULFI-Sp).Methods: A two stage observational study was conducted. The ULFI was cross-culturally adapted to Spanish through double forward and backward translations, the psychometric properties were then validated. Participants (n = 126) with various upper limb conditions of >12 weeks duration completed the ULFI-Sp, QuickDASH and the Euroqol Health Questionnaire 5 Dimensions (EQ-5D-3 L). The full sample determined internal consistency, concurrent criterion validity, construct validity and factor structure; a subgroup (n = 35) determined reliability at seven days.Results: The ULFI-Sp demonstrated high internal consistency (α = 0.94) and reliability (r = 0.93). Factor structure was one-dimensional and supported construct validity. Criterion validity with the EQ-5D-3 L was fair and inversely correlated (r = -0.59). The QuickDASH data was unavailable for analysis due to excessive missing responses.Conclusions: The ULFI-Sp is a valid upper limb outcome measure with similar psychometric properties to the English language version. © 2013 Cuesta-Vargas and Gabel; licensee BioMed Central Ltd.
CITATION STYLE
Cuesta-Vargas, A. I., & Gabel, P. C. (2013). Cross-cultural adaptation, reliability and validity of the Spanish version of the upper limb functional index. Health and Quality of Life Outcomes, 11(1). https://doi.org/10.1186/1477-7525-11-126
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