The objective of this study is to evaluate the sensitivity and specificity of two nutrition screening tools to identify inpatients with malnutrition or at risk of malnutrition. The two tools are the Royal Marsden Abridged Adult Nutrition Screening Tool (AANST) and the Malnutrition Screening Tool (MST)[10] The tools will be compared with the currently accepted gold standard, Patient Generated Subjective Global Assessment (PG-SGA). Both screening tools are in the form of scored questionnaires and are suitable for electronic input.

The ultimate objective is to select an adult inpatient nutrition screening tool with the highest sensitivity for future use in the oncology inpatient setting in order to allow prompt commencement of an appropriate nutrition care plan.

Inclusion Criteria:

• All adult inpatients, over the age of 18, admitted to RMH for whom a measured weight and height can be obtained

Exclusion Criteria

• Patients for whom it is not possible to obtain a measured height and weight
• People with a definitive diagnosis of dementia
• People who lack capacity to understand the purpose of the study and to consent
• Patients who are unable to understand and speak English

Patients will be approached for consideration and recruitment to the study in a stratified manner in order to proportionately represent the diagnostic groups admitted to The Royal Marsden NHS Foundation Trust as inpatients. Patients will be approached sequentially from the list until the required number of patients are recruited for that particular diagnoses. Recruitment for particular diagnostic groups may take place over a number of days until the required number of patients is recruited. The same procedure will be repeated, with a newly generated list, for all selected diagnostic groups in a random order. This methodology will aim to capture patients who have been newly diagnosed, patients with established disease, patients newly admitted and those who have been inpatients for anumber of days or weeks.