title: Food models for portion size estimation of Asian foods.
abstract: BACKGROUND
  Novel portion size estimation aids relevant to the cognitive potential of children are necessary for an improved accuracy in dietary recall. We developed graduated realistic food models for Asian foods and tested their accuracy and precision in children.
  
  
  METHODS
  Food models were constructed for nine commonly consumed food items using a range of low cost materials. These were tested among a random sample of 80 school children (aged 10-16 years). A total of 719 estimations were made.
  
  
  RESULTS
  A high percentage (68%) of correct estimations and high correlation (r > 0.95, P < 0.001) for estimated versus actual weight were observed. Bland-Altman analysis indicated 91% of estimations within the limits of agreement. Accuracy and precision was high for both amorphous and non-amorphous foods.
  
  
  CONCLUSIONS
  Portion size estimation using realistic food models is found to be accurate and precise and is suitable for use in children.
authors.affiliation: Department of Biochemistry and Molecular Biology, University of Colombo, Colombo, Sri Lanka. nutres.cmb@gmail.com
authors.forename: P
authors.initials: P
authors.lastname: Lanerolle
authors.forename: T
authors.initials: T
authors.lastname: Thoradeniya
authors.forename: A
authors.initials: A
authors.lastname: de Silva
mesh_terms: D000293:Adolescent; D001208:Asia; D002648:Child; D004032:Diet; D004034:Diet Surveys / Q000592:standards*; D005260:Female; D005502:Food; D006801:Humans; D008297:Male; D011939:Mental Recall; D008962:Models, Theoretical; D064787:Portion Size; D015203:Reproducibility of Results; D012858:Size Perception
keywords: child; dietary assessment; portion size; realistic food models