Table 1.

Food groupings used in factor analysis

Food group	Example of food items
Cereals and tubers products	Rice, noodles, pasta, plain bread
Whole grains	Corn, barley, buckwheat
Dark-colored vegetables	Spinach, canola, carrot, spinach
Light-colored vegetables	Chinese cabbage, potato, onion
Pickled vegetables	Preserved vegetables, vegetables in soy sauce
Poultry	Chicken, duck meat
Red meats and its products	Pork, beef, lamb and those products
Eggs and eggs products	Whole eggs, yolk, white, preserved eggs
Fruit	Fresh and canned (no added sugar) fruits
Condiment	Sauce, vinegar, salt, monosodium glutamate
Oils	Colza oil, soybean oil, peanut oil
Soy products	Dried beans, beans flour, roasted broad bean
Milk and its products	Whole milk, skim milk, flavored milk, cheese, yogurt
Seafood	Fresh fish, dried fish, shellfish, shrimp
Nuts and seeds	Sesame, sunflower, peanuts, walnuts, almonds, hazelnuts, pine-nuts
Drink	Fruit or flavored drinks, fruit juice, soft drinks
Wine	Beer, rice wine, white wine
Pastry snacks	Cakes, pancake, mooncake
Other food	Fast food, canned food