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Problems with analyses and interpretation of data in “use of the KDQOL-36™ for assessment of health-related quality of life among dialysis patients in the United States”

A recent article in the journal reported analyses of KDQOL-36™ survey data collected from 240,343 adults (330,412 surveys) dialyzed at a large dialysis organization in the United States during 2014–2016. The authors concluded that the KDQOL-36™ Symptoms and Problems of Kidney Disease scale had the h...

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Detalles Bibliográficos
Autores principales: Hays, Ron D., Peipert, John D., Kallich, Joel D.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: BioMed Central 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6892228/
https://www.ncbi.nlm.nih.gov/pubmed/31795976
http://dx.doi.org/10.1186/s12882-019-1609-2
Descripción
Sumario:A recent article in the journal reported analyses of KDQOL-36™ survey data collected from 240,343 adults (330,412 surveys) dialyzed at a large dialysis organization in the United States during 2014–2016. The authors concluded that the KDQOL-36™ Symptoms and Problems of Kidney Disease scale had the highest mean score of the KDQOL-36™ scales. We note that this inference was erroneous because the scales are not scored on the same numeric scale. In addition, the authors found that responses to a general health perceptions item (“In general, would you say your health is excellent, very good, good, fair, or poor”) was not significantly associated with any of the 5 KDQOL-36 scale scores. In contrast, we find significant and noteworthy correlations in two other datasets. These analytic issues call into question the accuracy and validity of the conclusions of this paper.