Confronta i metodi

	Questionario di Frequenza Alimentare (QFA)	Questionario di Adesione alla Dieta Mediterranea (MEDAS)
Campo	Scienze della nutrizione	Scienze della nutrizione
Famiglia	Process / pipeline	Process / pipeline
Anno di origine	1986	2011
Ideatore	Walter C. Willett, Harvard T.H. Chan School of Public Health	Helmut Schröder, Montserrat Fitó, Ramón Estruch
Tipo	Self-administered questionnaire (retrospective dietary assessment)	Self-administered questionnaire
Fonte seminale	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.
Alias	FFQ, food-frequency-assessment	MEDAS, 14-item MEDAS
Correlati	5	5
Sintesi	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.