Mary Margaret Huizinga|Adam Carlisle|Kerri L. Cavanaugh|Dianne Davis|Rebecca Gregory|David G. Schlundt|Russell L. Rothman
Literacy, Numeracy, and Portion-Size Estimation Skills
Johns Hopkins Medicine|Johns Hopkins University|Emory University|Vanderbilt University Medical Center|Vanderbilt University
portionsize estimation important component weight management literacy numeracy skills may important accurate portionsize estimation hypothesized low literacy numeracy would associated decreased accuracy portion estimationa crosssectional study primary care patients performed july 2006 august 2007 analyses performed january 2008 october 2008 literacy numeracy assessed validated measures rapid estimate adult literacy medicine wide range achievement test third edition three solidfood items one liquid item participants asked serve single serving specified weight volume amount representing single serving portionsize estimation considered accurate fell within 25 single standard servingof 164 participants 71 women 64 white mean sd bmi 306 83 kgm2 91 reported completing high school 24 9thgrade literacy skills 67 9thgrade numeracy skills items combined 65 participants accurate asked serve single serving 62 accurate asked serve specified amount unadjusted analyses literacy numeracy associated inaccurate estimation multivariate analyses lower literacy associated inaccuracy serving single serving or254 95 ci111 581in study many participants poor portionsize estimation skills lower literacy skills associated less accuracy participants asked serve single serving opportunities may exist improve portionsize estimation addressing literacy