title: Pediatric Index of Mortality 2 score in Italy: a multicenter, prospective, observational study.
abstract: OBJECTIVE
  To assess the performance of the Pediatric Index of Mortality (PIM) 2 score in Italian pediatric intensive care units (PICUs).
  
  
  METHODS
  Prospective, observational, multicenter, 1-year study.
  
  
  METHODS
  Eighteen medical-surgical PICUs.
  
  
  METHODS
  Consecutive patients (3266) aged 0-16 years admitted between 1 March 2004 and 28 February 2005.
  
  
  METHODS
  None.
  
  
  RESULTS
  To assess the performance of the PIM2 score, discrimination and calibration measures were applied to all children admitted to the 18 PICUs, in the entire population and in different groups divided for deciles of risk, age and admission diagnosis. There was good discrimination, with an area under the receiver operating characteristic (ROC) curve of 0.89 (95% CI 0.86-0.91) and good calibration of the scoring system [non-significant differences between observed and predicted deaths when the population was stratified according to deciles of risk (chi2 9.86; 8 df, p = 0.26) for the whole population].
  
  
  CONCLUSIONS
  The PIM2 score performed well in this sample of the Italian pediatric intensive care population. It may need to be reassessed in the injury and postoperative groups in larger studies.
authors.affiliation: Department of Anesthesia and Intensive Care, Children's Hospital Vittore Buzzi, Istituti Clinici di Perfezionamento, Via Castelvetro 32, 20154 Milan, Italy. andrea.wolfler@icp.mi.it
authors.forename: Andrea
authors.initials: A
authors.lastname: Wolfler
authors.forename: Paolo
authors.initials: P
authors.lastname: Silvani
authors.forename: Massimo
authors.initials: M
authors.lastname: Musicco
authors.forename: Ida
authors.initials: I
authors.lastname: Salvo
mesh_terms: D000293:Adolescent; D002423:Cause of Death; D002648:Child; D046688:Child Mortality; D002675:Child, Preschool; D016638:Critical Illness / Q000401:mortality; D005260:Female; D017052:Hospital Mortality / Q000639:trends*; D006776:Hospitals, Pediatric; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D015278:Intensive Care Units, Pediatric; D007558:Italy / Q000453:epidemiology; D008297:Male; D019370:Observation; D011446:Prospective Studies