Development of a Stata Command for Pediatric Risk of Mortality Calculation

Outcome prognostication tools have been used extensively in clinical care and research to calculate the expected mortality and control for illness severity in PICUs. Although there are many scores, including the Pediatric Logistic Organ Dysfunction-2, and the Pediatric Index of Mortality 3 scores, the Pediatric Risk of Mortality III (PRISM III) score and its extension, the PRISM IV score, are widely used. The PRISM III score assigns scores correlating with mortality based on diagnosis/disease factors, age, and physiological values at the time of PICU admission. The PRISM IV score extends this further by calculating the expected mortality using data from the PRISM III score, patient history, principal dysfunction, and admission source. Crucially, these scores were validated with large patient populations and are intended to compare populations; they are not intended to prognosticate individual outcomes.