So sánh phương pháp

	Bảng câu hỏi tần suất thực phẩm (FFQ)	Bảng sàng lọc mức độ tuân thủ Chế độ ăn Địa Trung Hải (MEDAS)
Lĩnh vực	Khoa học dinh dưỡng	Khoa học dinh dưỡng
Họ	Process / pipeline	Process / pipeline
Năm ra đời	1986	2011
Người khởi xướng	Walter C. Willett, Harvard T.H. Chan School of Public Health	Helmut Schröder, Montserrat Fitó, Ramón Estruch
Loại	Self-administered questionnaire (retrospective dietary assessment)	Self-administered questionnaire
Công trình gốc	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.
Tên gọi khác	FFQ, food-frequency-assessment	MEDAS, 14-item MEDAS
Liên quan	5	5
Tóm tắt	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.