مقایسهٔ روش‌ها

	NOVA Food Classification	Individual Dietary Diversity Score
حوزه	Food Agriculture Studies	Food Agriculture Studies
خانواده	Process / pipeline	Process / pipeline
سال پیدایش	2019	2011
پدیدآور	Carlos A. Monteiro and colleagues (University of Sao Paulo)	Gina Kennedy, Terri Ballard & Marie Claude Dop (FAO)
نوع	Food-processing classification pipeline for diet and food-system analysis	Qualitative 24-hour recall pipeline for individual diet-quality assessment
منبع بنیادین	Monteiro, C. A., Cannon, G., Levy, R. B., Moubarac, J.-C., Louzada, M. L. C., Rauber, F., Khandpur, N., Cediel, G., Neri, D., Martinez-Steele, E., Baraldi, L. G., & Jaime, P. C. (2019). Ultra-processed foods: what they are and how to identify them. Public Health Nutrition, 22(5), 936-941.	Kennedy, G., Ballard, T., & Dop, M. C. (2011). Guidelines for Measuring Household and Individual Dietary Diversity. Nutrition and Consumer Protection Division, Food and Agriculture Organization of the United Nations, Rome.
نام‌های دیگر	NOVA, NOVA classification, Ultra-Processed Food Classification, NOVA food processing classification	IDDS, Individual Dietary Diversity, FAO Dietary Diversity Score, Dietary Diversity Score
مرتبط	4	4
خلاصه	The NOVA classification groups foods not by their nutrient content but by the nature, extent, and purpose of the industrial processing they undergo, sorting all items into four groups: unprocessed or minimally processed foods, processed culinary ingredients, processed foods, and ultra-processed foods. Developed by Carlos Monteiro and colleagues at the University of Sao Paulo, NOVA introduced ultra-processed foods (UPF) as a category — industrial formulations made largely from substances extracted from foods plus additives — and argued that this processing dimension, rather than nutrient profile alone, is central to diet and health. The 2019 paper Ultra-processed foods: what they are and how to identify them gives the operational definitions, and the share of dietary energy from ultra-processed foods has become a widely used exposure in nutrition and food-system research.	The Individual Dietary Diversity Score (IDDS) is a simple, rapid count of the number of distinct food groups an individual consumed over the previous 24 hours, used as a population-level proxy for diet quality and micronutrient adequacy. Standardized in the FAO's 2011 Guidelines for Measuring Household and Individual Dietary Diversity by Kennedy, Ballard and Dop, the IDDS rests on the observation, reviewed by Ruel, that more diverse diets tend to be more nutritionally adequate. The score is obtained from a qualitative recall of everything eaten, mapping foods to a standard set of nine food groups and counting how many groups appear. Because it requires no portion weighing or food-composition tables, it is cheap to collect at scale and has become a workhorse indicator in nutrition surveys, food-security monitoring, and program evaluation.