The Piper Fatigue Scale (PFS)-12 is a recently shortened version of the original PFS that has 40 items. Psychometric evidence for PFS-12 from a small sample of individuals on hemodialysis is presented. The psychometric analysis with pilot data was done using a detailed item analysis, including Bland-Altman plots, exploratory factor analysis of pre- and post-item scores, and item change scores. Additional measures were used to investigate the validity including the Patient-Reported Outcomes Measurement Information System-Fatigue Scale and the 6-minute walk test. The sample consisted of 86 hemodialysis individuals. The internal consistency reliability of the PFS-12 total scale was 0.91 (pre), 0.95 (post), and subscale alphas were 0.79-0.94. Convergent, concurrent, and predictive validity of PFS-12 were supported. Construct validity of PFS-12 was confirmed predialysis and partially supported in the change score analysis. The brief 12-item PFS is a good alternative to the longer version of this scale to reduce the respondent burden and measure the overall fatigue; further validation in test-retest situations and subscale validity is needed.
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| http://dx.doi.org/10.1891/JNM-2021-0092 | DOI Listing |
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