PIM (Pediatric Index of Mortality) Calculator
Predicts risk of death on PICU admission using PIM3 (default) or PIM2. For trained health professionals.
Choose model
PIM3 inputs
Use values from first ICU contact → 1 hour after ICU arrival (per PIM documentation).
Reminder: These models are for severity/risk adjustment and may be miscalibrated in some settings. Use clinical judgment and local guidance.
PIM (Pediatric Index of Mortality): what it is
PIM (Pediatric Index of Mortality) is a PICU admission risk model that estimates a child’s probability of death in intensive care using information available at (or very soon after) first ICU contact. It’s primarily intended for risk adjustment, benchmarking, audit, and research—not as a stand-alone tool to make individual treatment decisions. PubMed+2PubMed+2
Versions you’ll hear about
- PIM2 (2003): a recalibrated model designed to reflect improvements in PICU outcomes and uses variables readily available at ICU admission. PubMed
- PIM3 (2013): an updated international model built on a large contemporary dataset to support comparison of risk-adjusted mortality between units/regions. PubMed
What data it uses (typical PIM3)
PIM3 uses a small set of admission-time variables such as:
- Systolic blood pressure
- Pupillary reaction to light
- Oxygenation term (100 × FiO₂ / PaO₂)
- Base excess
- Mechanical ventilation within the first hour
- Elective vs non-elective admission
- Main reason for ICU admission (e.g., recovery after specific procedure types)
- Diagnosis risk category (low / high / very high risk) ANZICS+1
Importantly, the documentation specifies using the first value recorded within the window from first face-to-face ICU contact to 1 hour after ICU arrival. ANZICS
