2015
DOI: 10.1016/j.jval.2015.09.491
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Cost utility analysis of spinal cord stimulation vs. Reoperation in the treatment of failed back surgery syndrome in colombia

Abstract: Extended psychometric analysis was done using the factor analysis (Horn´s Parallel Analysis, Exploratory Factor Analysis) and Rasch analysis (RA, Rating Scale model) (Scale diagnostic, Validity, Reliability, Dimensionality and Local independence, Differential item functioning (DIF)). Results: Horn´s Parallel Analysis revealed one factor (loading factor > 0.40). RA showed a correct functioning of the rating categories of the scale. As for the item fit, only one item 'It is easy to put on my device' slightly und… Show more

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