Pediatric Risk of Mortality

A few papers in this series:

Pediatric Risk of Mortality (PRISM) Score.  Pollack, Ruttimann, Getson.  Critical Care Medicine.  1988.

1. Relevant acronyms are:
   1. PRISM: Pediatric Risk of Mortality score.
   2. PSI: Physiologic Stability Index: pediatric severity of illness measure that assess mortality risk from 1-4
   3. PICU: Pediatric ICUs, where the data is collected from, and where predictions are to be applied
2. Developed from another risk index to perform dimension reduction for mortality risk assessment
3. Corpus has 1415 patients, resulting in 116 deaths
4. Has 14 routinely measured physiologic vars, and 23 variable ranges (I’m not sure what the distinction is)
5. Logistic regression was used
6. Prediction of results of group was accurate (but what about individual? I think this was mentioned to me)
7. There is a lot of variablity in the data between ICUs
8. Relevant data collected is:
   1. outcome (survival or death)
   2. admission day PSI scores
   3. diagnoses categorized by primary physiologic system of dysfunction
   4. demographic info
9.  The PSI score was previously decided on and is based on 34 variables from 7 physiologic systems
   1. The most abnormal value of each variable (what this means isn’t clear to me)  is coded into 75 preassigned variable ranges that reflect clinical importance