The 1114 individual food items consumed by the subjects were
divided into 21 food subgroups using the food classification table
from the CAN-pro 3.0 appendix, with modifications based on
a previous study [23]. The foods were classified into six food
groups: grains; fruits and vegetables; meat, fish, eggs and
legumes; milk and dairy products; fats and sweets; and others.
This classification was used to determine the dietary composition
of the subjects’ breakfasts [24]. Food group intake was averaged
over three breakfasts. The food group, energy, and nutrient
intakes for each meal were analyzed separately to identify the
food composition of breakfast, lunch, dinner, and between-meal
snacks.