Validation and modification of the phoenix sepsis score for predicting in-hospital mortality in children with suspected infection admitted to the intensive care unit

The PSS demonstrated only moderate ability to predict in-hospital mortality among pediatric ICU patients in the present cohort, indicating that its application in other healthcare settings should be approached with caution. The modified PSS+ scoring system significantly improved mortality prediction performance and may serve as a more reliable and clinically applicable tool for risk assessment in critically ill children.