Assessing sustainable and healthy diets in large-scale surveys: Validity and applicability of a dietary index based on a brief food group propensity questionnaire representing the EAT-Lancet Planetary Health Diet
Background Ensuring healthy diets within planetary boundaries is essential. However, current instruments measuring adherence to the EAT-Lancet planetary health diet are unsuitable for large-scale surveys. Simplified tools assessing consumption frequency can improve response rates, lower costs, and...
| Autores principales: | , , , , , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Elsevier
2025
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/178547 |
| _version_ | 1855527558330712064 |
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| author | Miranda, Agustin Murante, Anna Maria Manca, Federica Consalez, Fabio Jani, Anant Declerck, Fabrice Maillot, Matthieu Verger, Eric |
| author_browse | Consalez, Fabio Declerck, Fabrice Jani, Anant Maillot, Matthieu Manca, Federica Miranda, Agustin Murante, Anna Maria Verger, Eric |
| author_facet | Miranda, Agustin Murante, Anna Maria Manca, Federica Consalez, Fabio Jani, Anant Declerck, Fabrice Maillot, Matthieu Verger, Eric |
| author_sort | Miranda, Agustin |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Background
Ensuring healthy diets within planetary boundaries is essential. However, current instruments measuring adherence to the EAT-Lancet planetary health diet are unsuitable for large-scale surveys. Simplified tools assessing consumption frequency can improve response rates, lower costs, and facilitate administration.
Objectives
This study aimed to develop a practical and concise index for evaluating relative adherence to the EAT-Lancet diet across large-scale multicountry surveys.
Methods
First, the EAT-Lancet Consumption Frequency Index (ELFI) was developed using a brief food propensity questionnaire of 14 food groups representing the planetary health diet from the Food systems that support transitions to hEalthy And Sustainable dieTs survey, which encompassed 27 European countries (n = 27,417). Subsequently, ELFI was further validated using 24-h dietary recalls from the Third French Individual and National Food Consumption Survey (n = 1645), correlating it with the valid EAT-Lancet Index (ELI), which evaluates absolute adherence, as well as with food group consumption, measures of nutritional health (nutrient adequacy and diet quality), and environmental impact. Analyses included assessment of reliability, structural validity, concurrent validity, and nomological validity.
Results
ELFI showed strong reliability (α > 0.80) and factor analysis revealed a 2-factor solution: “foods to encourage” and “foods to balance and to limit.” Confirmatory factor analysis demonstrated that ELFI is structurally valid. Concurrent validity was confirmed as it was associated with sex, age, education, income, household size, physical activity, and smoking habit (P < 0.05). ELFI correlated with ELI (0.44, P < 0.0001) and food group consumptions. Regarding nomological validity, the ELFI subscores for “foods to encourage” and “foods to balance and to limit” were associated with better nutritional health (β = 0.62 and 0.23, respectively; P < 0.0001) and a lower environmental impact (β = –0.16 and –0.36, respectively; P < 0.0001).
Conclusions
ELFI approach represents a valuable and easy-to-implement index for evaluating relative adherence to sustainable and healthy diets in large-scale multicountry studies. |
| format | Journal Article |
| id | CGSpace178547 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2025 |
| publishDateRange | 2025 |
| publishDateSort | 2025 |
| publisher | Elsevier |
| publisherStr | Elsevier |
| record_format | dspace |
| spelling | CGSpace1785472025-12-08T10:29:22Z Assessing sustainable and healthy diets in large-scale surveys: Validity and applicability of a dietary index based on a brief food group propensity questionnaire representing the EAT-Lancet Planetary Health Diet Miranda, Agustin Murante, Anna Maria Manca, Federica Consalez, Fabio Jani, Anant Declerck, Fabrice Maillot, Matthieu Verger, Eric healthy diets diet quality nutrition surveys dietary assessment Background Ensuring healthy diets within planetary boundaries is essential. However, current instruments measuring adherence to the EAT-Lancet planetary health diet are unsuitable for large-scale surveys. Simplified tools assessing consumption frequency can improve response rates, lower costs, and facilitate administration. Objectives This study aimed to develop a practical and concise index for evaluating relative adherence to the EAT-Lancet diet across large-scale multicountry surveys. Methods First, the EAT-Lancet Consumption Frequency Index (ELFI) was developed using a brief food propensity questionnaire of 14 food groups representing the planetary health diet from the Food systems that support transitions to hEalthy And Sustainable dieTs survey, which encompassed 27 European countries (n = 27,417). Subsequently, ELFI was further validated using 24-h dietary recalls from the Third French Individual and National Food Consumption Survey (n = 1645), correlating it with the valid EAT-Lancet Index (ELI), which evaluates absolute adherence, as well as with food group consumption, measures of nutritional health (nutrient adequacy and diet quality), and environmental impact. Analyses included assessment of reliability, structural validity, concurrent validity, and nomological validity. Results ELFI showed strong reliability (α > 0.80) and factor analysis revealed a 2-factor solution: “foods to encourage” and “foods to balance and to limit.” Confirmatory factor analysis demonstrated that ELFI is structurally valid. Concurrent validity was confirmed as it was associated with sex, age, education, income, household size, physical activity, and smoking habit (P < 0.05). ELFI correlated with ELI (0.44, P < 0.0001) and food group consumptions. Regarding nomological validity, the ELFI subscores for “foods to encourage” and “foods to balance and to limit” were associated with better nutritional health (β = 0.62 and 0.23, respectively; P < 0.0001) and a lower environmental impact (β = –0.16 and –0.36, respectively; P < 0.0001). Conclusions ELFI approach represents a valuable and easy-to-implement index for evaluating relative adherence to sustainable and healthy diets in large-scale multicountry studies. 2025-09-04 2025-12-04T12:58:53Z 2025-12-04T12:58:53Z Journal Article https://hdl.handle.net/10568/178547 en Open Access application/pdf Elsevier Miranda, A.; Murante, A.M.; Manca, F.; Consalez, F.; Jani, A.; Declerck, F.; Maillot, M.; Verger, E. (2025) Assessing sustainable and healthy diets in large-scale surveys: Validity and applicability of a dietary index based on a brief food group propensity questionnaire representing the EAT-Lancet Planetary Health Diet. Journal of Nutrition 155(9): p. 3084-3096. ISSN: 0022-3166 |
| spellingShingle | healthy diets diet quality nutrition surveys dietary assessment Miranda, Agustin Murante, Anna Maria Manca, Federica Consalez, Fabio Jani, Anant Declerck, Fabrice Maillot, Matthieu Verger, Eric Assessing sustainable and healthy diets in large-scale surveys: Validity and applicability of a dietary index based on a brief food group propensity questionnaire representing the EAT-Lancet Planetary Health Diet |
| title | Assessing sustainable and healthy diets in large-scale surveys: Validity and applicability of a dietary index based on a brief food group propensity questionnaire representing the EAT-Lancet Planetary Health Diet |
| title_full | Assessing sustainable and healthy diets in large-scale surveys: Validity and applicability of a dietary index based on a brief food group propensity questionnaire representing the EAT-Lancet Planetary Health Diet |
| title_fullStr | Assessing sustainable and healthy diets in large-scale surveys: Validity and applicability of a dietary index based on a brief food group propensity questionnaire representing the EAT-Lancet Planetary Health Diet |
| title_full_unstemmed | Assessing sustainable and healthy diets in large-scale surveys: Validity and applicability of a dietary index based on a brief food group propensity questionnaire representing the EAT-Lancet Planetary Health Diet |
| title_short | Assessing sustainable and healthy diets in large-scale surveys: Validity and applicability of a dietary index based on a brief food group propensity questionnaire representing the EAT-Lancet Planetary Health Diet |
| title_sort | assessing sustainable and healthy diets in large scale surveys validity and applicability of a dietary index based on a brief food group propensity questionnaire representing the eat lancet planetary health diet |
| topic | healthy diets diet quality nutrition surveys dietary assessment |
| url | https://hdl.handle.net/10568/178547 |
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