A number of frail, older hospital patients in the UK who are either malnourished or at risk of malnutrition may currently go unreported, according to the findings of a new clinical study. The research, which aimed to investigate and compare the ability to predict malnutrition in a group of frail, older hospital patients using current nutritional risk screening tools, concluded that the gold standard for assessing malnutrition risk in this group may not be the best tool.