Validation of the Telephone-Administered Version of the Mediterranean Diet Adherence Screener (MEDAS) Questionnaire

EpiDoC Unit, Centro de Estudos de Doenças Crónicas (CEDOC) da NOVA Medical School, Universidade Nova de Lisboa (NMS/UNL), CEDOC—Campus Sant’Ana, Pólo de Investigação, NMS, UNL, Edifício Amarelo, Rua do Instituto Bacteriológico, n 5, 1150-082 Lisboa, Portugal

EpiSaúde Sociedade Científica, 7005-837 Évora, Portugal

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Faculdade de Ciências da Nutrição e Alimentação da Universidade do Porto, 4200-465 Porto, Portugal

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Programa Nacional para a Promoção da Alimentação Saudável, Direção-Geral da Saúde, 1049-005 Lisboa, Portugal

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Escola Superior de Saúde do Instituto Politécnico de Leiria, Unidade de Investigação em Saúde (UI), 2411-901 Leiria, Portugal

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NOVA Information Management School, Universidade Nova de Lisboa, 1070-312 Lisboa, Portugal

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Serviço de Reumatologia do Hospital Egas Moniz—Centro Hospitalar Lisboa Ocidental (CHLO-E.P.E.), 1349-019 Lisboa, Portugal

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Instituto de Saúde Pública da Universidade do Porto, 4050-091 Porto, Portugal

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Department of Preventive Medicine and Public Health, University of Navarra, 31008 Pamplona, Spain

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Escola Nacional de Saúde Pública, Universidade Nova de Lisboa, 1600-560 Lisboa, Portugal

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Unidade de Reumatologia—Centro Hospitalar Universitário Lisboa Central (CHULC-Hospital Curry Cabral), 1169-050 Lisboa, Portugal

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These authors contributed equally to this work.

Nutrients 2020, 12(5), 1511; https://doi.org/10.3390/nu12051511

Received: 6 May 2020 / Revised: 14 May 2020 / Accepted: 18 May 2020 / Published: 22 May 2020

(This article belongs to the Section Nutritional Epidemiology)

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Abstract

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. View Full-Text

Keywords: Mediterranean diet; MEDAS; FFQ; telephone; nutrition; epidemiology; Portugal

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MDPI and ACS Style

Gregório, M.J.; Rodrigues, A.M.; Salvador, C.; Dias, S.S.; de Sousa, R.D.; Mendes, J.M.; Coelho, P.S.; Branco, J.C.; Lopes, C.; Martínez-González, M.A.; Graça, P.; Canhão, H. Validation of the Telephone-Administered Version of the Mediterranean Diet Adherence Screener (MEDAS) Questionnaire. Nutrients 2020, 12, 1511. https://doi.org/10.3390/nu12051511

AMA Style

Gregório MJ, Rodrigues AM, Salvador C, Dias SS, de Sousa RD, Mendes JM, Coelho PS, Branco JC, Lopes C, Martínez-González MA, Graça P, Canhão H. Validation of the Telephone-Administered Version of the Mediterranean Diet Adherence Screener (MEDAS) Questionnaire. Nutrients. 2020; 12(5):1511. https://doi.org/10.3390/nu12051511

Chicago/Turabian Style

Gregório, Maria J., Ana M. Rodrigues, Clara Salvador, Sara S. Dias, Rute D. de Sousa, Jorge M. Mendes, Pedro S. Coelho, Jaime C. Branco, Carla Lopes, Miguel A. Martínez-González, Pedro Graça, and Helena Canhão. 2020. "Validation of the Telephone-Administered Version of the Mediterranean Diet Adherence Screener (MEDAS) Questionnaire" Nutrients 12, no. 5: 1511. https://doi.org/10.3390/nu12051511

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