Measuring nutritional knowledge using Item Response Theory and its validity in European adolescents
Year: 2018
Type: article
Study design: Observational Study
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, pulses, meat and eggs, and fish, as well as with blood concentrations of vitamin C, β-carotene, n-3 fatty acids, holo-transcobalamin, cobalamin and folate; nutrition knowledge was negatively associated with intake of olives and avocado, alcohol and savoury snacks. CONCLUSIONS: The NKTS assessed nutritional knowledge adequately and it is proposed as a new tool to investigate this subject in future studies.
Source: Public Health Nutrition
Authors: Thanise Sabrina Souza Santos, Cristina Julian, Dalton Francisco de Andrade, Betzabeth Slater Villar, Raffaela Piccinelli, Marcela González-Gross, Fréderic Gottrand, Odysseas Androutsos, Mathilde Kersting, Nathalie Michels, Inge Huybrechts, Kurt Widhalm, Dénes Molnár, Ascensión Marcos, Manuel J Castillo-Garzón, Luis A Moreno
Institutions: Universidade de São Paulo, Universidad de Zaragoza, Spanish Biomedical Research Centre in Physiopathology of Obesity and Nutrition, Instituto de Investigación Sanitaria Aragón, Universidade Federal de Santa Catarina, Consiglio per la ricerca in agricoltura e l’analisi dell’economia agraria, Centro de Investigación Biomédica en Red, Universidad Politécnica de Madrid, Université de Lille, Centre Hospitalier Universitaire de Lille, Harokopio University of Athens, Ghent University, Centre international de recherche sur le cancer, Medical University of Vienna, University of Pecs, Consejo Superior de Investigaciones Científicas, Instituto de Ciencia y Tecnología de Alimentos y Nutrición, Universidad de Granada
Language: English
Subfield: Nutrition and Dietetics
Field: Nursing
Domain: Health Sciences
Open Access status: bronze
Funders: World Health Organization, Université de Lille, Coordenação de Aperfeiçoamento de Pessoal de Nível Superior, University of Crete, Universidad de Granada, Universidad de Zaragoza, Rheinische Friedrich-Wilhelms-Universität Bonn, Pécsi Tudományegyetem, Consejo Superior de Investigaciones Científicas
Awards: G116629194, G823097665
OpenAlex ID: W2903565586