The factor scores for each dietary pattern and for each individual were calculated by summing the food item intakes weighted by their factor loadings.
Subjects were asked to indicate the average weekly frequency of consumption of each dietary item; intakes lower than once a week, but at least once a month, were coded as 0.5 per week.
Participants indicated the average weekly frequency of consumption for each dietary item; intakes lower than once a week but at least once a month were coded as 0.5 per week.
For the 121 items, intake was measured as daily equivalent frequency, intake of oils was measured as ml per week, and alcohol as g per day.
For those items, intakes were categorized as follows: zero intake (referent), low intake, and high intake.
Subjects were asked to indicate the average weekly frequency of consumption of each dietary item; occasional intake (lower than once a week, but at least once a month) was coded as 0.5 per week.
If participants reported consuming '1 3 servings/month' or more of a particular food item, their intake of that food item was converted to 'servings/week' based on the mid-range value of the intake category.
