Critical care calculator
Pediatric Index of Mortality (PIM) Calculator
Estimate PIM3 (default) or PIM2 mortality risk from admission data. Designed for trained health professionals and quality/risk-adjustment work.
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
