@article{fdi:010092873,
  title = {{H}ow do the indices based on the {EAT}-{L}ancet recommendations measure adherence to healthy and sustainable diets ? {A} comparison of measurement performance in adults from a {F}rench national survey},
  author = {{M}iranda, {A}. {R}. and {V}ieux, {F}. and {M}aillot, {M}. and {V}erger, {E}ric},
  editor = {},
  language = {{ENG}},
  abstract = {{B}ackground: {M}easuring adherence to {EAT}-{L}ancet recommendations for healthy and sustainable diets is challenging, leading to diverse methods and a lack of consensus on standardized metrics. {A}vailable indices vary mainly in scoring systems, food components, units, energy adjustments, and cut-off points. {O}bjectives: {T}o evaluate and compare the measurement performance of 9 dietary indices for assessing adherence to {EAT}-{L}ancet reference {M}ethods: {T}his cross-sectional study utilized repeated 24-h dietary recall data from 1723 adults in the {F}rench {T}hird {I}ndividual and {N}ational {S}tudy on {F}ood {C}onsumption {S}urvey ({INCA}3, 2014-2015). {S}ociodemographic, nutritional, and environmental variables were analyzed to assess the validity and reliability of dietary indices. {R}esults: {T}he 4 indices assessing their food components with proportional scoring captured dietary variability, were less dependent on energy intake and converged to a large extent with nutritional indicators. {A}lthough the 3 binary indices showed a stronger correlation with environmental indicators, 1 proportional index converged with both domains. {I}ndices had valid unidimensional structures, meaning that the combination of food components within each index accurately reflected the same construct, supporting the use of total scores. {F}urthermore, the indices differed between sociodemographic groups, demonstrating concurrent-criterion validity. {H}igher scores were associated with higher nutritional quality and lower environmental impact, but with unfavorable results for zinc intake, vitamin {B}12, and water use. {A} low concordance rate (32%-43%) indicated that indices categorized individuals differently. {C}onclusions: {R}esearchers must align study objectives with the applicability, assumptions, and significance of chosen indices. {I}ndices using proportional scoring allow a global understanding of dietary health and sustainability, being advantageous in precision-focused research (for example, clinical trials or epidemiological research). {C}onversely, indices based on binary scoring offer a simplified perspective, serving as valuable tools for surveys, observational studies, and public health. {R}ecognizing their strengths and limitations is crucial for a comprehensive assessment of diets and their implications.},
  keywords = {sustainable diet ; planetary boundaries ; healthy diet ; dietary index ; dietary assessment ; food systems ; validity ; nutrient adequacy ; {FRANCE}},
  booktitle = {},
  journal = {{C}urrent {D}evelopments in {N}utrition},
  volume = {9},
  numero = {3},
  pages = {104565 [23 p.]},
  ISSN = {2475-2991},
  year = {2025},
  DOI = {10.1016/j.cdnut.2025.104565},
  URL = {https://www.documentation.ird.fr/hor/fdi:010092873},
}