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The Nutrition Literacy Assessment Instrument for Italian Subjects, NLit-IT: Exploring Validity and Reliability

Author

Listed:
  • Virginia Vettori

    (Department of Health Sciences, University of Florence, 48 Morgagni Blvd, 50134 Florence, Italy)

  • Chiara Lorini

    (Department of Health Sciences, University of Florence, 48 Morgagni Blvd, 50134 Florence, Italy)

  • Heather D. Gibbs

    (Department of Dietetics and Nutrition, University of Kansas Medical Center, 3901 Rainbow Blvd/MS4013, Kansas City, KS 66160, USA)

  • Francesco Sofi

    (Department of Experimental and Clinical Medicine, University of Florence, 50134 Florence, Italy
    Unit of Clinical Nutrition, University Hospital of Careggi, 50134 Florence, Italy
    Don Carlo Gnocchi Foundation Italy, Onlus IRCCS, 50134 Florence, Italy)

  • Vieri Lastrucci

    (Department of Health Sciences, University of Florence, 48 Morgagni Blvd, 50134 Florence, Italy
    Global Health Center, Meyer University Hospital, 24 Gaetano Pieraccini Blvd, 50134 Florence, Italy)

  • Gino Sartor

    (School of Specialization in Hygiene and Preventive Medicine, University of Florence, 48 Morgagni Blvd, 50134 Florence, Italy)

  • Ilaria Fulvi

    (Department of Health Sciences, University of Florence, 48 Morgagni Blvd, 50134 Florence, Italy)

  • Duccio Giorgetti

    (School of Specialization in Hygiene and Preventive Medicine, University of Florence, 48 Morgagni Blvd, 50134 Florence, Italy)

  • Giuseppe Cavallo

    (Department of Health Sciences, University of Florence, 48 Morgagni Blvd, 50134 Florence, Italy)

  • Guglielmo Bonaccorsi

    (Department of Health Sciences, University of Florence, 48 Morgagni Blvd, 50134 Florence, Italy)

Abstract

The aim of this study was to test validity and reliability of the adapted version of the Nutrition Literacy Assessment Instrument (NLit) for Italian people (NLit-IT). An observational cross-sectional study was conducted, involving a convenience sample of adults ( n = 74). To explore the validity of the tool, we considered both diet quality as an outcome of NL, and health literacy (HL) as a construct that presents similarities and differences with NL. Diet quality was measured by adherence to the Mediterranean Diet (Med diet) through the validated Mediterranean Diet Literature-based adherence score (MEDI-Lite). The relationship between NL level and adherence to Med diet was assessed by linear regression analysis and computing correlations between NLit-IT and MEDI-Lite scores (Spearman’s Rho). Additionally, we evaluated the correlation between NLit-IT score and the level of HL (Spearman’s Rho). Internal consistency and reliability were measured by Cronbach’s alpha and intraclass correlation coefficient (ICC) respectively. Internal consistency (ρT = 0.78; 95% CI, 0.69–0.84) and reliability (ICC = 0.68, 95% CI, 0.46–0.85) were confirmed. In addition, NLit-IT total score was correlated with MEDI-Lite score (Rho = 0.25; p -value = 0.031) and multivariate regression analysis confirmed that NL significantly contributed to MEDI-Lite score (R 2 = 0.13; β = 0.13; p -value = 0.008). There was no significant association between the level of HL and NL. In conclusion, NLit-IT showed validity and reliability as a measure of NL for Italian people.

Suggested Citation

  • 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.
    • Handle: RePEc:gam:jijerp:v:18:y:2021:i:7:p:3562-:d:526402
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    References listed on IDEAS

    as
    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. Garden Tabacchi & Giuseppe Battaglia & Giuseppe Messina & Antonio Paoli & Antonio Palma & Marianna Bellafiore, 2020. "Validity and Internal Consistency of the Preschool-FLAT, a New Tool for the Assessment of Food Literacy in Young Children from the Training-To-Health Project," IJERPH, MDPI, vol. 17(8), pages 1-15, April.
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    1. 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.
    2. Rony Francisco Chilón-Troncos & Elizabeth Emperatriz García-Salirrosas & Dany Yudet Millones-Liza & Miluska Villar-Guevara, 2024. "Adaptation and Validation of the S-NutLit Scale to Assess Nutritional Literacy in the Peruvian Population," IJERPH, MDPI, vol. 21(6), pages 1-17, May.
    3. Patrizio Zanobini & Chiara Lorini & Vieri Lastrucci & Valentina Minardi & Valentina Possenti & Maria Masocco & Giorgio Garofalo & Giovanna Mereu & Guglielmo Bonaccorsi, 2021. "Health Literacy, Socio-Economic Determinants, and Healthy Behaviours: Results from a Large Representative Sample of Tuscany Region, Italy," IJERPH, MDPI, vol. 18(23), pages 1-11, November.

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