Determination of Risk Factors and Mortality for Pediatric Chronic Critical Illness in Turkey

It is predicted that the number of Pediatric Chronic Critical Illness increases similar to adult all over the world. The prevalence of Pediatric Chronic Critical Illness in Turkey is unknown. The investigators aimed to evaluate the etiology, comorbid conditions, demographic data, prevalence, mortality and costs of these patient in intensive care units in Turkey. In this multi-centered study, The investigators will retrospectively review the last 3 year of patients receiving treatment at the Intensive Care Unit.