Screening Tool for the Assessment of Malnutrition in Pediatrics STAMP is a validated nutrition screening tool for use in hospitalized children aged 2-16 years. STAMP is a simple 5-step tool that was developed by a team from Royal Manchester Children’s Hospitals and the University of Ulster, the lead investigator being Helen McCarthy, Lecturer and Honorary Pediatric Dietitian. Visit the "Downloads" button at the top of the page, and follow the instructions for the necessary assessment.