Development of a Food-Based Diet Quality Scale for Brazilian Schoolchildren Using Item Response Theory.

ABSTRACT: Item response theory (IRT) is a psychometric method that provides probabilistic model-based measurements. Its use is relatively recent in the assessment of food consumption, especially through dietary assessment tools. This study aims (1) to develop a food-based diet quality scale for Brazilian schoolchildren using IRT, and (2) to apply the scale to a representative sample of schoolchildren from a Southern Brazilian city. The scale was developed with daily consumption frequency of foods from 835 students who completed the Food Intake and Physical Activity of Schoolchildren questionnaire. Questionnaire foods were grouped into 10 items according to their nutritional similarities and were evaluated by full-information factor analysis that indicated a dominant factor explaining 28% of the vari

SUBMITTER: Giacomelli SC 

PROVIDER: S-EPMC8469312 | biostudies-literature | 2021 Sep

REPOSITORIES: biostudies-literature