13.4% of patients who were diagnosed as malnourished received either parenteral or enteral nutrition during their hospital stay.
Enteral nutrition is preferred over parenteral nutrition because it is cheaper and has a lower risk of complications (especially infection).
1. Corkins, M., Guenter,
P., DiMario-Ghalili, R., Jensen, G., Malone, A., Miller, S., Patel, V.,
Plogsted, S., Resnick, H. Malnutrition Diagnoses in Hospitalized
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Economic analysis of costs with enteral and parenteral nutritional
therapy according to disease and outcome. Einstein (Sao Paulo).
Hospital patients on enteral nutrition often receive only 45-65% of the ordered nutrition. 
Approximately one-third of patients arrive at the hospital malnourished. 
1. Parrish, C., McCray, S.
Part I Enteral Feeding Barriers: Pesky Bowel Sounds & Gastric
Residual Volumes. Practical Gastroenterology. 2019; 183: 35-50.
2. Tappenden, K.,
Quatrara, B., Parkhurst, M., Malone, A., Ganjiang, G., Ziegler, T.
Critical Role of Nutrition in Improving Auality of Care: An
Interdisciplinary Call to Action to Address Adult Hospital Malnutrition.
Journal of Parenteral and Enteral Nutrition. 2013; 37(4): 482-497.