This study may have provided more insight had they chosen a chain that also provides "healthier" options with fewer calories, such as oatmeal, fruit cups or yogurt vs.
For example, some restaurants offered low-calorie meal options and switched out salads with regular dressing for low calorie dressings or unhealthy desserts and sides for fruit cups.
Most of the approximately one hundred initial products contain zero grams of trans fat and include food offerings such as yogurt, breakfast foods, and small fresh fruit cups.