Vol 12: Validation of a Spanish version of the Spine Functional Index.Report as inadecuate



 Vol 12: Validation of a Spanish version of the Spine Functional Index.


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This article is from Health and Quality of Life Outcomes, volume 12.AbstractBackground: The Spine Functional Index SFI is a recently published, robust and clinimetrically valid patient reported outcome measure. Objectives: The purpose of this study was the adaptation and validation of a Spanish-version SFI-Sp with cultural and linguistic equivalence. Methods: A two stage observational study was conducted. The SFI was cross-culturally adapted to Spanish through double forward and backward translation then validated for its psychometric characteristics. Participants n = 226 with various spine conditions of 12 weeks duration completed the SFI-Sp and a region specific measure: for the back, the Roland Morris Questionnaire RMQ and Backache Index BADIX; for the neck, the Neck Disability Index NDI; for general health the EQ-5D and SF-12. The full sample was employed to determine internal consistency, concurrent criterion validity by region and health, construct validity and factor structure. A subgroup n = 51 was used to determine reliability at seven days. Results: The SFI-Sp demonstrated high internal consistency α = 0.85 and reliability r = 0.96. The factor structure was one-dimensional and supported construct validity. Criterion specific validity for function was high with the RMQ r = 0.79, moderate with the BADIX r = 0.59 and low with the NDI r = 0.46. For general health it was low with the EQ-5D and inversely correlated r = −0.42 and fair with the Physical and Mental Components of the SF-12 and inversely correlated r = −0.56 and r = −0.48, respectively. The study limitations included the lack of longitudinal data regarding other psychometric properties, specifically responsiveness. Conclusions: The SFI-Sp was demonstrated as a valid and reliable spine-regional outcome measure. The psychometric properties were comparable to and supported those of the English-version, however further longitudinal investigations are required.



Author: Cuesta-Vargas, Antonio I; Gabel, Charles P

Source: https://archive.org/



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