مقایسهٔ روش‌ها

	پرسشنامه فراوانی غذا (FFQ)	پرسشنامه غربالگری پایبندی به رژیم غذایی مدیترانه‌ای (MEDAS)
حوزه	علوم تغذیه	علوم تغذیه
خانواده	Process / pipeline	Process / pipeline
سال پیدایش	1986	2011
پدیدآور	Walter C. Willett, Harvard T.H. Chan School of Public Health	Helmut Schröder, Montserrat Fitó, Ramón Estruch
نوع	Self-administered questionnaire (retrospective dietary assessment)	Self-administered questionnaire
منبع بنیادین	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.
نام‌های دیگر	FFQ, food-frequency-assessment	MEDAS, 14-item MEDAS
مرتبط	5	5
خلاصه	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.