Table 2 Food frequency questionnaire with 60 items

Milk and dairy products (6 items)

Whole milk, fermented milk, low fat milk, sweetened whole milk, yoghurt, cheese etc.

Rice (7 items)

Steamed rice, glutinous rice, noodle, instant noodle etc.

Meat and products (10 items)

Pork, chicken, beef, fish, egg, bacon etc.

Vegetables (4 items)

Chinese kale, bitter cucumber, carrot, sesbania flower

Fruits (4 items)

Banana, mango, orange, guava

Cereals and products(5 items)

Peanut, mung bean, soy milk, tofu, sunflower seed

Dessert (2 item)

Any dishes cooked with coconut milk (such as banana with coconut milk), any dishes cooked with syrup (such as black grass jelly with syrup)

Beverages (6 items)

Fruit juice (40%), soda beverage, cold coffee, green tea frappe, fruit frappe

Fats (3 items)

Animal oil, rice barn oil, soy bean oil

Miscellaneous (13 items)

Hamburger, bakery, bread, cake, green curry etc.