Measuring nutritional knowledge using Item Response Theory and its validity in European adolescents.

ABSTRACT:

Objective

To analyse the Nutritional Knowledge Test (NKT) using Item Response Theory (ITR) analysis and to assess the construct validity of the Nutritional Knowledge Scale (NKTS) and its associations with adolescent food group consumption and nutritional biomarkers.

Design

Cross-sectional study.

Setting

Multicentre investigation conducted in ten European cities.ParticipantsAdolescents aged 12·5-17·5 years (n 3215) who completed over 75 % of the NKT.

Results

Factor analysis indicated that the NKT can be analysed with a one-dimensional model. Eleven out of twenty-three items from the NKT presented adequate parameters and were selected to be included in the NKTS. Nutrition knowledge was positively associated with consumption of fruits, cereals, dairy products, pul

SUBMITTER: Souza Santos TS 

PROVIDER: S-EPMC10260635 | biostudies-literature | 2019 Mar

REPOSITORIES: biostudies-literature