Gregório, Maria JoãoGregório, Maria JoãoRodrigues, Ana M.Maria Rodrigues, AnaSalvador, ClaraDias, Sara S.Dias, Sara Simõesde Sousa, Rute D.Sousa, RDMendes, Jorge M.Coelho, Pedro S.Branco, Jaime C.Branco, JaimeLopes, CarlaMartínez-González, Miguel A.Graça, PedroCanhão, HelenaCanhão, Helena2020-06-022020-06-022020-051422-8599PURE: 18399172PURE UUID: 40250b6c-0c0b-4549-bef7-fe65341bfe9aScopus: 85085209654ORCID: /0000-0003-1894-4870/work/74932766PubMed: 32455971WOS: 000542272700163ORCID: /0000-0003-0828-9956/work/95136458ORCID: /0000-0003-2251-3803/work/152085032http://hdl.handle.net/10362/98692Funding: The present project was granted by the Public Health Initiatives Programme (PT06), financed by EEA Grants Financial Mechanism 2009–2014.A 14-Item Mediterranean Diet Adherence Screener (MEDAS) questionnaire was developed and validated in face-to-face interviews, but not via telephone. The aims of this study were to evaluate the validity and reliability of a telephone-administered version of the MEDAS as well as to validate the Portuguese version of the MEDAS questionnaire. A convenience community-based sample of adults (n = 224) participated in a three-stage survey. First, trained researchers administered MEDAS via a telephone. Second, the Portuguese version of Food Frequency Questionnaire (FFQ), and MEDAS were administered in a semi-structured face-to-face interview. Finally, MEDAS was again administered via telephone. The telephone-administered MEDAS questionnaire was compared with the face-to-face-version using several metrics. The telephone-administered MEDAS was significantly correlated with the face-to-face-administered MEDAS [r = 0.805, p < 0.001; interclass correlation coefficient (ICC) = 0.803, p < 0.001] and showed strong agreement (k = 0.60). The MEDAS scores that were obtained in the first and second telephone interviews were significantly correlated (r = 0.661, p < 0.001; ICC = 0.639, p < 0.001). The overall agreement between the Portuguese version of MEDAS and the FFQ-derived Mediterranean diet adherence score had a Cohen’s k = 0.39. The telephone-administered version of MEDAS is a valid tool for assessing the adherence to the Mediterranean diet and acquiring data for large population-based studies.516985engEpidemiologyFFQMEDASMediterranean dietNutritionPortugalTelephoneFood ScienceNutrition and DieteticsSDG 3 - Good Health and Well-beingjournal article10.3390/nu12051511https://www.scopus.com/pages/publications/85085209654