{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,25]],"date-time":"2026-03-25T15:18:44Z","timestamp":1774451924290,"version":"3.50.1"},"reference-count":27,"publisher":"MDPI AG","issue":"5","license":[{"start":{"date-parts":[[2020,5,22]],"date-time":"2020-05-22T00:00:00Z","timestamp":1590105600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100007048","name":"EEA Grants","doi-asserted-by":"publisher","award":["Public Health Initiatives Programme (PT06), financed by EEA Grants Financial Mechanism 2009-2014"],"award-info":[{"award-number":["Public Health Initiatives Programme (PT06), financed by EEA Grants Financial Mechanism 2009-2014"]}],"id":[{"id":"10.13039\/501100007048","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Nutrients"],"abstract":"<jats:p>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 &lt; 0.001; interclass correlation coefficient (ICC) = 0.803, p &lt; 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 &lt; 0.001; ICC = 0.639, p &lt; 0.001). The overall agreement between the Portuguese version of MEDAS and the FFQ-derived Mediterranean diet adherence score had a Cohen\u2019s 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.<\/jats:p>","DOI":"10.3390\/nu12051511","type":"journal-article","created":{"date-parts":[[2020,5,22]],"date-time":"2020-05-22T10:18:18Z","timestamp":1590142698000},"page":"1511","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":51,"title":["Validation of the Telephone-Administered Version of the Mediterranean Diet Adherence Screener (MEDAS) Questionnaire"],"prefix":"10.3390","volume":"12","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-0380-7833","authenticated-orcid":false,"given":"Maria Jo\u00e3o","family":"Greg\u00f3rio","sequence":"first","affiliation":[{"name":"Comprehensive Health Research Centre (CHRC), NOVA Medical School, UNL, 1099-085 Lisboa, Portugal"},{"name":"EpiDoC Unit, Centro de Estudos de Doen\u00e7as Cr\u00f3nicas (CEDOC) da NOVA Medical School, Universidade Nova de Lisboa (NMS\/UNL), CEDOC\u2014Campus Sant\u2019Ana, P\u00f3lo de Investiga\u00e7\u00e3o, NMS, UNL, Edif\u00edcio Amarelo, Rua do Instituto Bacteriol\u00f3gico, n 5, 1150-082 Lisboa, Portugal"},{"name":"EpiSa\u00fade Sociedade Cient\u00edfica, 7005-837 \u00c9vora, Portugal"},{"name":"Faculdade de Ci\u00eancias da Nutri\u00e7\u00e3o e Alimenta\u00e7\u00e3o da Universidade do Porto, 4200-465 Porto, Portugal"},{"name":"Programa Nacional para a Promo\u00e7\u00e3o da Alimenta\u00e7\u00e3o Saud\u00e1vel, Dire\u00e7\u00e3o-Geral da Sa\u00fade, 1049-005 Lisboa, Portugal"}]},{"given":"Ana M.","family":"Rodrigues","sequence":"additional","affiliation":[{"name":"Comprehensive Health Research Centre (CHRC), NOVA Medical School, UNL, 1099-085 Lisboa, Portugal"},{"name":"EpiDoC Unit, Centro de Estudos de Doen\u00e7as Cr\u00f3nicas (CEDOC) da NOVA Medical School, Universidade Nova de Lisboa (NMS\/UNL), CEDOC\u2014Campus Sant\u2019Ana, P\u00f3lo de Investiga\u00e7\u00e3o, NMS, UNL, Edif\u00edcio Amarelo, Rua do Instituto Bacteriol\u00f3gico, n 5, 1150-082 Lisboa, Portugal"},{"name":"EpiSa\u00fade Sociedade Cient\u00edfica, 7005-837 \u00c9vora, Portugal"}]},{"given":"Clara","family":"Salvador","sequence":"additional","affiliation":[{"name":"Comprehensive Health Research Centre (CHRC), NOVA Medical School, UNL, 1099-085 Lisboa, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6782-7481","authenticated-orcid":false,"given":"Sara S.","family":"Dias","sequence":"additional","affiliation":[{"name":"EpiDoC Unit, Centro de Estudos de Doen\u00e7as Cr\u00f3nicas (CEDOC) da NOVA Medical School, Universidade Nova de Lisboa (NMS\/UNL), CEDOC\u2014Campus Sant\u2019Ana, P\u00f3lo de Investiga\u00e7\u00e3o, NMS, UNL, Edif\u00edcio Amarelo, Rua do Instituto Bacteriol\u00f3gico, n 5, 1150-082 Lisboa, Portugal"},{"name":"EpiSa\u00fade Sociedade Cient\u00edfica, 7005-837 \u00c9vora, Portugal"},{"name":"Escola Superior de Sa\u00fade do Instituto Polit\u00e9cnico de Leiria, Unidade de Investiga\u00e7\u00e3o em Sa\u00fade (UI), 2411-901 Leiria, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9713-0204","authenticated-orcid":false,"given":"Rute D.","family":"de Sousa","sequence":"additional","affiliation":[{"name":"Comprehensive Health Research Centre (CHRC), NOVA Medical School, UNL, 1099-085 Lisboa, Portugal"},{"name":"EpiDoC Unit, Centro de Estudos de Doen\u00e7as Cr\u00f3nicas (CEDOC) da NOVA Medical School, Universidade Nova de Lisboa (NMS\/UNL), CEDOC\u2014Campus Sant\u2019Ana, P\u00f3lo de Investiga\u00e7\u00e3o, NMS, UNL, Edif\u00edcio Amarelo, Rua do Instituto Bacteriol\u00f3gico, n 5, 1150-082 Lisboa, Portugal"},{"name":"EpiSa\u00fade Sociedade Cient\u00edfica, 7005-837 \u00c9vora, Portugal"}]},{"given":"Jorge M.","family":"Mendes","sequence":"additional","affiliation":[{"name":"NOVA Information Management School, Universidade Nova de Lisboa, 1070-312 Lisboa, Portugal"}]},{"given":"Pedro S.","family":"Coelho","sequence":"additional","affiliation":[{"name":"NOVA Information Management School, Universidade Nova de Lisboa, 1070-312 Lisboa, Portugal"}]},{"given":"Jaime C.","family":"Branco","sequence":"additional","affiliation":[{"name":"Comprehensive Health Research Centre (CHRC), NOVA Medical School, UNL, 1099-085 Lisboa, Portugal"},{"name":"EpiDoC Unit, Centro de Estudos de Doen\u00e7as Cr\u00f3nicas (CEDOC) da NOVA Medical School, Universidade Nova de Lisboa (NMS\/UNL), CEDOC\u2014Campus Sant\u2019Ana, P\u00f3lo de Investiga\u00e7\u00e3o, NMS, UNL, Edif\u00edcio Amarelo, Rua do Instituto Bacteriol\u00f3gico, n 5, 1150-082 Lisboa, Portugal"},{"name":"EpiSa\u00fade Sociedade Cient\u00edfica, 7005-837 \u00c9vora, Portugal"},{"name":"Servi\u00e7o de Reumatologia do Hospital Egas Moniz\u2014Centro Hospitalar Lisboa Ocidental (CHLO-E.P.E.), 1349-019 Lisboa, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1524-852X","authenticated-orcid":false,"given":"Carla","family":"Lopes","sequence":"additional","affiliation":[{"name":"Instituto de Sa\u00fade P\u00fablica da Universidade do Porto, 4050-091 Porto, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3917-9808","authenticated-orcid":false,"given":"Miguel A.","family":"Mart\u00ednez-Gonz\u00e1lez","sequence":"additional","affiliation":[{"name":"Department of Preventive Medicine and Public Health, University of Navarra, 31008 Pamplona, Spain"}]},{"given":"Pedro","family":"Gra\u00e7a","sequence":"additional","affiliation":[{"name":"Faculdade de Ci\u00eancias da Nutri\u00e7\u00e3o e Alimenta\u00e7\u00e3o da Universidade do Porto, 4200-465 Porto, Portugal"},{"name":"Programa Nacional para a Promo\u00e7\u00e3o da Alimenta\u00e7\u00e3o Saud\u00e1vel, Dire\u00e7\u00e3o-Geral da Sa\u00fade, 1049-005 Lisboa, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2046-8017","authenticated-orcid":false,"given":"Helena","family":"Canh\u00e3o","sequence":"additional","affiliation":[{"name":"Comprehensive Health Research Centre (CHRC), NOVA Medical School, UNL, 1099-085 Lisboa, Portugal"},{"name":"EpiDoC Unit, Centro de Estudos de Doen\u00e7as Cr\u00f3nicas (CEDOC) da NOVA Medical School, Universidade Nova de Lisboa (NMS\/UNL), CEDOC\u2014Campus Sant\u2019Ana, P\u00f3lo de Investiga\u00e7\u00e3o, NMS, UNL, Edif\u00edcio Amarelo, Rua do Instituto Bacteriol\u00f3gico, n 5, 1150-082 Lisboa, Portugal"},{"name":"EpiSa\u00fade Sociedade Cient\u00edfica, 7005-837 \u00c9vora, Portugal"},{"name":"Escola Nacional de Sa\u00fade P\u00fablica, Universidade Nova de Lisboa, 1600-560 Lisboa, Portugal"},{"name":"Unidade de Reumatologia\u2014Centro Hospitalar Universit\u00e1rio Lisboa Central (CHULC-Hospital Curry Cabral), 1169-050 Lisboa, 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