A few papers in this series:
Pediatric Risk of Mortality (PRISM) Score. Pollack, Ruttimann, Getson. Critical Care Medicine. 1988.
- Relevant acronyms are:
- PRISM: Pediatric Risk of Mortality score.
- PSI: Physiologic Stability Index: pediatric severity of illness measure that assess mortality risk from 1-4
- PICU: Pediatric ICUs, where the data is collected from, and where predictions are to be applied
- Developed from another risk index to perform dimension reduction for mortality risk assessment
- Corpus has 1415 patients, resulting in 116 deaths
- Has 14 routinely measured physiologic vars, and 23 variable ranges (I’m not sure what the distinction is)
- Logistic regression was used
- Prediction of results of group was accurate (but what about individual? I think this was mentioned to me)
- There is a lot of variablity in the data between ICUs
- Relevant data collected is:
- outcome (survival or death)
- admission day PSI scores
- diagnoses categorized by primary physiologic system of dysfunction
- demographic info
- The PSI score was previously decided on and is based on 34 variables from 7 physiologic systems
- 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