Categorisation of food items comprising 18 food groups for computing plant-based diet Indices (PDI)
| Food group | Food item | Total PDI | hPDI |
| Plant food groups (Healthful) | |||
| Whole grains | Dark breads (eg, barbari, sangak), barley, maize | Positive | Positive |
| Fruits | Melon, watermelon, honeydew melon, plums, apricot, apples, cherries, sour cherries, peaches, nectarine, pear, fig, date, grapes, kiwi, pomegranate, strawberry, banana, persimmon, berry, oranges, greengage, tangerine, sweet lemon, grapefruits | Positive | Positive |
| Vegetables | Cauliflower, carrot, tomato, spinach, lettuce, cucumber,eggplant, onion, greens, green bean, green pea, celery, mushroom, pepper, garlic, turnip, pumpkin, courgette | Positive | Positive |
| Nuts | Almonds, peanut, walnut, pistachio, hazelnut, seeds | Positive | Positive |
| Legumes | Lentils, split pea, beans, chick pea, fava bean, soy, mung bean | Positive | Positive |
| Vegetable oils | Olive oil, vegetable oil used for cooking | Positive | Positive |
| Tea and coffee | Tea, coffee | Positive | Positive |
| Plant food groups (unhealthful) | |||
| Fruit juices | Apple juice, orange juice, melon juice | Positive | Reverse |
| Refined grains | Lavash bread, baguette bread, rice, pasta, biscuits, taftun bread | Positive | Reverse |
| Potatoes | French fries, baked or mashed potatoes, potato or corn chips | Positive | Reverse |
| Sugar sweetened beverages | Cola, chocolate milk | Positive | Reverse |
| Sweets and desserts | Cookies, cakes, muffins, pies, chocolates, honey, jam, sugar cubes, sugar, candies, others | Positive | Reverse |
| Animal food groups | |||
| Animal fat | Butter added to food, butter used for cooking | Reverse | Reverse |
| Dairy | Low-fat milk, low-fat yoghurt, cheese, Kashk, yoghurt drink, high-fat milk, high-fat yoghurt, cream cheese, cream, ice cream, dripped yoghurt | Reverse | Reverse |
| Egg | Eggs | Reverse | Reverse |
| Fish or seafood | Canned tuna, fish | Reverse | Reverse |
| Meat | Beef and veal, lamb, minced meat, sausage, deli meat, hamburger, chicken, heart, kidney, liver, tongue, brain, offal, rennet | Reverse | Reverse |
| Misc. animal-based foods | Pizza, mayonnaise | Reverse | Reverse |
hPDI, healthful PDI.