From: Energy and protein intake in medical and geriatric inpatients with MEDPass versus conventional administration of oral nutritional supplements: study protocol for the randomized controlled MEDPass Trial
Formulas for daily energy requirements
BMI < 18.5 kg/m2
BMI > 18.5 kg/m2
< 65 years
Actual body weight ×  30 kcal [10]
Actual body weight ×  27 kcal [10]
> 65 years
Actual body weight × 32 kcal [14]
Actual body weight × 30 kcal [14, 33]