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Nutrition Literacy and Healthy Diet: Findings from the Validation of a Short Seniors-Oriented Screening Tool, the Spanish Myths-NL

Author

Listed:
  • Elena Lobo

    (Faculty of Health Sciences and Sport, University of Zaragoza, Plaza Universidad, 3, 22002 Huesca, Spain)

  • María Tamayo

    (Faculty of Health Sciences and Sport, University of Zaragoza, Plaza Universidad, 3, 22002 Huesca, Spain)

  • Teresa Sanclemente

    (Faculty of Health Sciences and Sport, University of Zaragoza, Plaza Universidad, 3, 22002 Huesca, Spain)

Abstract

A good level of nutrition literacy (NL) is proposed as a determinant factor for following a healthy diet. Improving seniors’ NL might be particularly pertinent to enhance the quality of their diets. This study aimed to systematically design and validate a short seniors-oriented questionnaire as a screening tool to evaluate NL. We developed the Myths-NL questionnaire, composed of 10 widespread nutrition myths, and checked for its content and face validity. An observational cross-sectional study was conducted to explore the validity and the test–retest reliability, involving a community-dwelling group of 316 individuals aged 65 years and over. Construct validity was proved by establishing both discriminant and convergent validity. Cronbach α = 0.61 and Spearman r = 0.79 ( p = 0.02) demonstrated internal consistency and test–retest reliability. Participants who had secondary/university studies scored significantly higher compared with those with primary ( p < 0.001), and a significant linear relationship (R2 = 0.044, p = 0.001) with a positive slope (β = 0.209) between Mediterranean Diet Adherence Screener (MEDAS) and Myths-NL scores was observed, proving construct validity. In conclusion, the Myths-NL questionnaire is a valid and reliable tool to screen NL in Spanish seniors and it might be useful as an assessment NL tool for designing and implementing lifestyle interventions to promote healthy eating.

Suggested Citation

  • Elena Lobo & María Tamayo & Teresa Sanclemente, 2021. "Nutrition Literacy and Healthy Diet: Findings from the Validation of a Short Seniors-Oriented Screening Tool, the Spanish Myths-NL," IJERPH, MDPI, vol. 18(22), pages 1-11, November.
    • Handle: RePEc:gam:jijerp:v:18:y:2021:i:22:p:12107-:d:681981
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    References listed on IDEAS

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    1. Virginia Vettori & Chiara Lorini & Chiara Milani & Guglielmo Bonaccorsi, 2019. "Towards the Implementation of a Conceptual Framework of Food and Nutrition Literacy: Providing Healthy Eating for the Population," IJERPH, MDPI, vol. 16(24), pages 1-21, December.
    2. Virginia Vettori & Chiara Lorini & Heather D. Gibbs & Francesco Sofi & Vieri Lastrucci & Gino Sartor & Ilaria Fulvi & Duccio Giorgetti & Giuseppe Cavallo & Guglielmo Bonaccorsi, 2021. "The Nutrition Literacy Assessment Instrument for Italian Subjects, NLit-IT: Exploring Validity and Reliability," IJERPH, MDPI, vol. 18(7), pages 1-19, March.
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