<qa>  What is the Basal Energy Expenditure calculated by subtracting 250-500 caloriesTotal caloric needs for subjects with a BMI 85th for age and sex shall be calculated using the Basal Energy Expenditure multiplied by an Activity Factor for an estimate of total energy requirements, then subtracting 250-500 calories to achieve a 0.5 to 1 pound weight loss per week. Basal Energy Expenditure will be calculated by using the Harris-Benedict equation as follows: 