Table 4.

Food groups used in dietary pattern analysis

#	Food group	Food items
1	Green leafy vegetables	Lettuce leaves, lettuce head, Chinese mallow, Swiss chard, young garlic shoot, celery, pak choi, Houttuynia cordata, flower Chinese cabbage, pea seedlings, spinach, garlic bolt, water spinach, bamboo shoots, green Chinese onion, Chinese toon, Chinese chives, caraway
2	Cruciferous vegetables	Cabbage, cauliflower
3	Gourd/melon family vegetables	Cucumber, eggplant, bitter gourd, green chilies, towel gourd
4	Red/orange vegetables	Carrot, pumpkin, tomato
5	Potatoes	Potato
6	Root vegetables	Lotus root, sweet potato, white radish, garlic
7	Bean vegetables	Broad bean, soybean, soybean sprouts, green bean, mung bean sprouts, string bean, pea
8	Bean products	Tofu, dried tofu, soybean milk, bean curd jelly, Chinese vermicelli, Chinese jelly noodles
9	Mushrooms	Mushroom, black fungus, oyster mushroom, needle mushroom, white fungus
10	Sea vegetables	Seaweed, sea lettuce
11	Pickled vegetables	Pickled Chinese cabbage, pickled garlic, pickled radish, preserved Szechuan pickle
12	Fruits	Apple, orange, banana, pear
13	Nuts and seeds	Peanut, walnut, sesame, sunflower seed
14	Pork	Pork, pork ribs, pork fat, trotters
15	Pig blood curd	Pig blood curd
16	Lean pork meat	Lean pork
17	Beef	Beef
18	Ox tripe	Ox tripe
19	Organ meat	Pork liver, pig kidney, pork intestine, duck gizzard, duck intestine
20	Poultry	Chicken, duck, goose
21	Processed meat	Sausage, preserved meat
22	Fish	Silver carp, crucian, grass carp, eel, hair tail
23	Squid	Squid
24	Milk	Milk
25	Eggs	Egg, duck egg
26	Processed eggs	Preserved egg, salted duck egg
27	Rice	Polished round-grained rice, glutinous rice, rice noodles
28	Noodles	Noodles, instant noodles
29	Bread	Bread, steamed bun, steamed twisted roll, flour
30	Maize	Corn, maize flour
31	Alcohol	Beer, Chinese liquor
32	Coffee/Tea	Coffee, tea