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- Title
Validation of the Telephone-Administered Version of the Mediterranean Diet Adherence Screener (MEDAS) Questionnaire.
- Authors
Gregório, Maria João; Rodrigues, Ana M.; Salvador, Clara; Dias, Sara S.; de Sousa, Rute D.; Mendes, Jorge M.; Coelho, Pedro S.; Branco, Jaime C.; Lopes, Carla; Martínez-González, Miguel A.; Graça, Pedro; Canhão, Helena
- 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.
- Subjects
INTERVIEWING; RESEARCH methodology; PATIENT compliance; QUESTIONNAIRES; RESEARCH evaluation; STATISTICAL sampling; RESEARCH methodology evaluation; MEDITERRANEAN diet; EVALUATION
- Publication
Nutrients, 2020, Vol 12, Issue 5, p1511
- ISSN
2072-6643
- Publication type
Article
- DOI
10.3390/nu12051511