RT Journal Article T1 Agreement among Mediterranean diet pattern adherence indexes : MCC-Spain study A1 Olmedo Requena, Rocío A1 Alguacil Ojeda, Juan A1 Martín, Vicente AB There are many different methods used to measure the degree of adherence to aMediterranean diet (MD), limiting comparison and interpretation of their results. The concordancebetween different methodologies has been questioned and their evaluation recommended. The aimof this study was to evaluate the agreement among five indexes that measure adherence toa Mediterranean dietary pattern. The study population included healthy adults selected inthe Multi-Case Control Spain (MCC-Spain) study recruited in 12 provinces. A total of 3640controls were matched to cases by age and sex. To reach the aim, the following scores ofadherence to a Mediterranean dietary pattern were calculated: Mediterranean diet score (MDS),alternative Mediterranean diet (aMED), relative Mediterranean diet (rMED), dietary score (DS)and literature-based adherence score (LBAS). The relative frequency of subjects with a high levelof adherence to a MD varied from 22% (aMED index) to 37.2% (DS index). Similarly, a highvariability was observed for the prevalence of a low level of MD: from 24% (rMED) to 38.4% (aMED).The correlation among MDS, aMED and rMED indexes was moderate, except for MDS and aMEDwith a high coefficient of correlation 0.75 (95% CI 0.74–0.77). The Cohen’s Kappa coefficient amongindexes showed a moderate–fair concordance, except for MDS and aMED with a 0.56 (95% CI0.55–0.59) and 0.67 (95% CI 0.66–0.68) using linear and quadratic weighting, respectively. The existingMD adherence indexes measured the same, although they were based on different constructingalgorithms and varied in the food groups included, leading to a different classification of subjects.Therefore, concordance between these indexes was moderate or low. PB MDPI SN 2072-6643 SN 2072-6643 (electrónico) YR 2019 FD 2019 LK http://hdl.handle.net/10272/16039 UL http://hdl.handle.net/10272/16039 LA eng NO Olmedo-Requena, R., González-Donquiles, C., Dávila-Batista, V., Romaguera, D., Castelló, A., Molina de la Torre, A., … Martín, V. (2019). Agreement among Mediterranean Diet Pattern Adherence Indexes: MCC-Spain Study. Nutrients, 11(3), 488. https://doi.org/10.3390/nu11030488 NO The authors thank Ingrid de Ruiter, MBChB PhD for English language editing and support.We thank all subjects who participated in the study and all MCC-Spain collaborators. DS Repositorio Institucional de la Universidad de Huelva RD 30 may 2026