השוואת שיטות

	שאלון תדירות צריכת מזון (FFQ)	שאלון המדד להדבקות לתזונה הים-תיכונית (MEDAS)
תחום	מדעי התזונה	מדעי התזונה
משפחה	Process / pipeline	Process / pipeline
שנת המקור	1986	2011
הוגה השיטה	Walter C. Willett, Harvard T.H. Chan School of Public Health	Helmut Schröder, Montserrat Fitó, Ramón Estruch
סוג	Self-administered questionnaire (retrospective dietary assessment)	Self-administered questionnaire
מקור מכונן	Willett, W. C. (1998). Nutritional Epidemiology (2nd ed.). Oxford University Press.	Schröder, H., Fitó, M., Estruch, R., et al. (2011). A short screener is valid for assessing Mediterranean diet adherence. The Journal of Nutrition, 141(6), 1140-1145.
כינויים	FFQ, food-frequency-assessment	MEDAS, 14-item MEDAS
קשורות	5	5
תקציר	The Food Frequency Questionnaire is a self-administered dietary assessment tool designed to measure habitual food and nutrient intake over an extended period (typically 6–12 months). Developed by epidemiologists, particularly Walter Willett at Harvard, the FFQ has become a cornerstone of nutritional epidemiology research, enabling large-scale studies to assess dietary patterns and examine diet-disease relationships. FFQs vary in length (50–200+ items) and focus, but all share the purpose of estimating average dietary intake in a time-efficient manner suitable for population studies.	The Mediterranean Diet Adherence Screener is a 14-item food frequency questionnaire designed to rapidly assess adherence to the Mediterranean dietary pattern. Developed by Schröder and colleagues in 2011 and validated in the PREDIMED randomized controlled trial, it is one of the most widely used tools for measuring Mediterranean diet compliance in research and clinical practice. The MEDAS is particularly valuable for epidemiological studies, intervention trials, and cardiovascular disease prevention programs.