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Bibliographic record number: 831066


Authors: Guiné, Raquel; Ferreira, Pinho; Duarte, João; Ferreira, Manuela; Correia, Paula; Leal, Marcela; Rumbak, Ivana; Colić Barić, Irena; Komes, Draženka; Šatalić, Zvonimir; Matek Sarić, Marijana; Tarcea, Monica; Fazakas, Zita; Jovanoska, Dijana; Vanevski, Dragoljub; Vittadini, Elena; Pellegrini, Nicoletta; Szűcs, Viktória; Harangozó, Júlia; EL-Kenawy, Ayman; EL-Shenawy, Omnia; Yalçın Erkan; Kösemeci, Cem; Klava, Dace; Straumite, Evita
Title: Knowledge about dietary fibres (KADF): development and validation of an evaluation instrument through structural equation modelling (SEM)
Source: Public health (London) (0033-3506) 138 (2016); 108-118
Paper type: article
Keywords: Dietary fibre ; Factor analysis ; Knowledge about fibres ; Structural equation modelling ; Scale validation ; Survey
Because there is scientific evidence that an appropriate intake of dietary fibre should be part of a healthy diet, given its importance in promoting health, the present study aimed to develop and validate an instrument to evaluate the knowledge of the general population about dietary fibres. The present study was a cross sectional study. Methods The methodological study of psychometric validation was conducted with 6010 participants, residing in 10 countries from three continents. The instrument is a questionnaire of self-response, aimed at collecting information on knowledge about food fibres. Exploratory factor analysis (EFA) was chosen as the analysis of the main components using varimax orthogonal rotation and eigenvalues greater than 1. In confirmatory factor analysis by structural equation modelling (SEM) was considered the covariance matrix and adopted the maximum likelihood estimation algorithm for parameter estimation. Exploratory factor analysis retained two factors. The first was called dietary fibre and promotion of health (DFPH) and included seven questions that explained 33.94% of total variance (α = 0.852). The second was named sources of dietary fibre (SDF) and included four questions that explained 22.46% of total variance (α = 0.786). The model was tested by SEM giving a final solution with four questions in each factor. This model showed a very good fit in practically all the indexes considered, except for the ratio χ2/df. The values of average variance extracted (0.458 and 0.483) demonstrate the existence of convergent validity ; the results also prove the existence of discriminant validity of the factors (r2 = 0.028) and finally good internal consistency was confirmed by the values of composite reliability (0.854 and 0.787). This study allowed validating the KADF scale, increasing the degree of confidence in the information obtained through this instrument in this and in future studies.
Original language: ENG
Citation databases: Current Contents Connect (CCC)
Science Citation Index Expanded (SCI-EXP) (sastavni dio Web of Science Core Collectiona)
Social Science Citation Index (SSCI) (sastavni dio Web of Science Core Collectiona)
Category: Znanstveni
Research fields:
Public health and health care system
Broj citata:
DOI: 10.1016/j.puhe.2016.03.031
URL cjelovitog rada:
Google Scholar: Knowledge about dietary fibres (KADF): development and validation of an evaluation instrument through structural equation modelling (SEM)
Contrib. to CROSBI by: Marijana Matek Sarić (, 2. Ruj. 2016. u 15:50 sati

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