Mary Margaret Huizinga|Tom A. Elasy|Kenneth A. Wallston|Kerri L. Cavanaugh|Dianne Davis|Rebecca Gregory|Douglas Fuchs|Robert M. Malone|Andrea Cherrington|Darren A. DeWalt|John B. Buse|Michael Pignone|Russell L. Rothman
Development and validation of the Diabetes Numeracy Test (DNT)
Vanderbilt University Medical Center|Vanderbilt University Medical Center|Vanderbilt University Medical Center|Vanderbilt University Medical Center|Vanderbilt University Medical Center|Vanderbilt University Medical Center|Vanderbilt University|University of North Carolina at Chapel Hill|University of Alabama at Birmingham|University of North Carolina at Chapel Hill|University of North Carolina at Chapel Hill|University of North Carolina at Chapel Hill|Vanderbilt University Medical Center
low literacy numeracy skills common adequate numeracy skills crucial management diabetes diabetes patients use numeracy skills interpret glucose meters administer medications follow dietary guidelines tasks existing literacy scales may adequate assess numeracy skills paper describes development psychometric properties diabetes numeracy test dnt first scale specifically measure numeracy skills used diabetes items dnt developed expert panel refined using cognitive response interviews potential respondents final version dnt 43 items relevant measures administered convenience sample 398 patients diabetes internal reliability determined kuderrichardson coefficient kr20 priori hypothetical model developed determine construct validity shortened 15item version dnt15 created split sample analysis dnt excellent internal reliability kr20 095 dnt significantly correlated p 005 education income literacy math skills diabetes knowledge supporting excellent construct validity mean score dnt 61 took average 33 minutes complete dnt15 also good internal reliability kr20 090 089 split sample analysis correlations dnt15 full dnt subsamples high rho 096 097 respectively dnt reliable valid measure diabetes related numeracy skills equally adequate timeefficient version dnt dnt15 used research clinical purposes evaluate diabetes related numeracy