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

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 (UGent) , et al.
(2019) PUBLIC HEALTH NUTRITION. 22(3). p.419-430
Author
Organization
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. Participants: Adolescents 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, beta-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.
Keywords
Knowledge, Nutrition, Diet, Psychometrics, Scales, HEALTHY LIFE-STYLE, NUTRIENT INTAKE, QUESTIONNAIRE, DESIGN, MULTICENTER, CHILDREN, CUTOFF, GUIDE, FOOD

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MLA
Souza Santos, Thanise Sabrina, et al. “Measuring Nutritional Knowledge Using Item Response Theory and Its Validity in European Adolescents.” PUBLIC HEALTH NUTRITION, vol. 22, no. 3, 2019, pp. 419–30.
APA
Souza Santos, T. S., Julian, C., de Andrade, D. F., Villar, B. S., Piccinelli, R., González-Gross, M., … Ottevaere, C. (2019). Measuring nutritional knowledge using Item Response Theory and its validity in European adolescents. PUBLIC HEALTH NUTRITION, 22(3), 419–430.
Chicago author-date
Souza Santos, Thanise Sabrina, Cristina Julian, Dalton Francisco de Andrade, Betzabeth Slater Villar, Raffaela Piccinelli, Marcela González-Gross, Fréderic Gottrand, et al. 2019. “Measuring Nutritional Knowledge Using Item Response Theory and Its Validity in European Adolescents.” PUBLIC HEALTH NUTRITION 22 (3): 419–30.
Chicago author-date (all authors)
Souza Santos, Thanise Sabrina, 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, on behalf of the HELENA Study Group, Ilse De Bourdeaudhuij, Stefaan De Henauw, Tineke De Vriendt, Lea Maes, Christophe Matthys, Carine Vereecken, Mieke De Maeyer, and Charlene Ottevaere. 2019. “Measuring Nutritional Knowledge Using Item Response Theory and Its Validity in European Adolescents.” PUBLIC HEALTH NUTRITION 22 (3): 419–430.
Vancouver
1.
Souza Santos TS, Julian C, de Andrade DF, Villar BS, Piccinelli R, González-Gross M, et al. Measuring nutritional knowledge using Item Response Theory and its validity in European adolescents. PUBLIC HEALTH NUTRITION. 2019;22(3):419–30.
IEEE
[1]
T. S. Souza Santos et al., “Measuring nutritional knowledge using Item Response Theory and its validity in European adolescents,” PUBLIC HEALTH NUTRITION, vol. 22, no. 3, pp. 419–430, 2019.
@article{8602884,
  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.
Participants: Adolescents 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, beta-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.},
  author       = {Souza Santos, Thanise Sabrina and Julian, Cristina and de Andrade, Dalton Francisco and Villar, Betzabeth Slater and Piccinelli, Raffaela and González-Gross, Marcela and Gottrand, Fréderic and Androutsos, Odysseas and Kersting, Mathilde and Michels, Nathalie and Huybrechts, Inge and Widhalm, Kurt and Molnár, Dénes and Marcos, Ascensión and Castillo-Garzón, Manuel J and Moreno, Luis A and HELENA Study Group, on behalf of the and De Bourdeaudhuij, Ilse and De Henauw, Stefaan and De Vriendt, Tineke and Maes, Lea and Matthys, Christophe and Vereecken, Carine and De Maeyer, Mieke and Ottevaere, Charlene},
  issn         = {1368-9800},
  journal      = {PUBLIC HEALTH NUTRITION},
  keywords     = {Knowledge,Nutrition,Diet,Psychometrics,Scales,HEALTHY LIFE-STYLE,NUTRIENT INTAKE,QUESTIONNAIRE,DESIGN,MULTICENTER,CHILDREN,CUTOFF,GUIDE,FOOD},
  language     = {eng},
  number       = {3},
  pages        = {419--430},
  title        = {Measuring nutritional knowledge using Item Response Theory and its validity in European adolescents},
  url          = {http://dx.doi.org/10.1017/s1368980018003269},
  volume       = {22},
  year         = {2019},
}
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