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Related Experiment Videos

Validating a nutrient profile model.

Carukshi Arambepola1, Peter Scarborough, Mike Rayner

  • 1British Heart Foundation Health Promotion Research Group, Department of Public Health, University of Oxford, Old Road Campus, Headington, Oxford OX3 7LF, UK.

Public Health Nutrition
|July 4, 2007
PubMed
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Nutrient profiling Model WXYfm effectively categorizes foods as healthier or less healthy, showing good validity in reflecting actual diet quality. This model is valuable for regulating food promotion to children.

Area of Science:

  • Nutritional Science
  • Public Health Policy
  • Food Science

Background:

  • Nutrient profiling models are crucial for identifying 'less healthy' foods.
  • Regulation of food promotion to children requires validated tools.
  • Model WXYfm was developed to rank food healthiness.

Purpose of the Study:

  • To assess the validity of the nutrient profiling Model WXYfm.
  • To determine if Model WXYfm accurately categorizes foods based on healthiness.
  • To evaluate the model's utility in regulating food promotion.

Main Methods:

  • Convergent and discriminant validity tested against the UK's Balance of Good Health (BGH).
  • Construct validity assessed by correlating food healthiness (Model WXYfm) with diet quality (Diet Quality Index).

Related Experiment Videos

  • Data from 1117 adults in the National Diet and Nutrition Survey (Great Britain, 2000-01) were used.

    • Main Results:

    • Model WXYfm demonstrated good convergent and discriminant validity (kappa = 0.69 agreement with BGH).
    • Good construct validity was observed; energy intake from 'less healthy' foods was higher in subjects with less healthy diets.
    • Subjects with the least healthy diets consumed nearly twice the energy from 'less healthy' foods compared to those with the healthiest diets.

    Conclusions:

    • Model WXYfm is a valid tool for categorizing foods according to their healthiness.
    • The model's categorization aligns with the healthiness of both recommended and achieved diets.
    • Novel methods were employed to validate this nutrient profiling model.