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. 2018 May 30;4(2):e56. doi: 10.2196/publichealth.9536

Table 5.

Individual foods used as predictors at least 5 times in the trees generated using our 2 processes (similar/optimized) and for the 5 guidelines: Fruit and Vegetables, Fat, Saturated Fat, Salt, and Free Sugars. The frequency is the number of times that a food is used as a decision node across all trees (eg, if used 3 times in 5 trees each, it would be 15).

Variables Similar decision tree Optimized decision tree Total frequency


FVb Fat SatFatc Salt Sugd FV Fat SatFat Salt Sug
Individual food

Sausages
✓ ✓ ✓

✓ ✓ ✓
20

Bananas raw ✓ ✓

✓ ✓ ✓ ✓

19

Sausage roll ✓ ✓ ✓

✓ ✓ ✓

16

Cheese cheddar
✓ ✓ ✓

✓ ✓ ✓
14

Milk chocolate
✓ ✓


✓ ✓

12

Butter salted
✓
✓
✓
✓
✓ 10

Cheese spreads
✓




✓

8

Ice cream
✓




✓
✓ 8

Fruit drink



✓

✓
✓ 8

Chicken pieces
✓



✓


8

Sex
✓
✓



✓
7

Potato crisps
✓
✓





6

Apples ✓



✓



6

Milk whole
✓ ✓



✓

6

Beans baked
✓
✓

✓
✓
6

Onions ✓

✓





6

Cola



✓



✓ 6

Apple juice unsweetened UHTa ✓


✓ ✓


✓ 6

Olive oil ✓








6

Orange juice unsweetened



✓



✓ 6

Orange juice unsweetened UHT








✓ 6

Bacon


✓





6

Apple juice unsweetened




✓


✓ 5
Demographic

Sex
✓
✓



✓
7

aUHT: Ultra-high-temperature processing.

bFV: fruits and vegetables.

cSatFat: saturated fat.

dSug: free sugars.