Background
The increasing trend toward eating out, rather than at home, along with concerns about
the adverse nutritional profile of restaurant foods has prompted the introduction
of calorie labeling. However, the calorie content in food from sit-down and fast-food
restaurants has not been analyzed.
Purpose
The calorie content of restaurant foods was analyzed in order to better understand
how factors that determine calorie content may potentially influence the effectiveness
of calorie labeling.
Methods
Nutritional information was collected from the websites of major (N=85) sit-down and
fast-food restaurants across Canada in 2010. A total of 4178 side dishes, entrées,
and individual items were analyzed in 2011.
Results
There was substantial variation in calories both within and across food categories.
In all food categories, sit-down restaurants had higher calorie counts compared to
fast-food restaurants (p<0.05). Both serving size and caloric density were positively correlated with calories;
however, serving size was more strongly correlated (r = 0.62) compared to caloric density (r = 0.29). On average, items that were higher in calories had a larger serving size
compared to items that were lower in calories (p<0.05); however, they were often not different in terms of caloric density.
Conclusions
Variation in calories per serving was seen when comparing various types of food, types
of establishments, and the specific establishments that provided the foods. Compared
to caloric density, serving size was shown to be a more important driver of calories
per serving in restaurant foods.
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© 2012 American Journal of Preventive Medicine. Published by Elsevier Inc. All rights reserved.
