SAPS3

Severity Assessment System for Intensive Care

Based on internationally validated scientific methodology for mortality prediction in ICUs.

Based on Scientific Evidence

SAPS3 (Simplified Acute Physiology Score 3) was developed by an international group of researchers and validated in a multicenter study involving 16,784 patients from 303 ICUs in 35 countries.

The original study published in Intensive Care Medicine in 2005 demonstrated high accuracy in predicting hospital mortality, with an area under the ROC curve of 0.848.


The model uses 20 variables divided into three categories: previous patient characteristics, admission circumstances, and degree of acute physiological dysfunction.

Reference scientific articles:
SAPS 3 - Part 1: Development

Metnitz et al. (2005). SAPS 3—From evaluation of the patient to evaluation of the intensive care unit. Part 1: Objectives, methods and cohort description.

Download PDF
SAPS 3 - Part 2: Validation

Moreno et al. (2005). SAPS 3—From evaluation of the patient to evaluation of the intensive care unit. Part 2: Development of a prognostic model for hospital mortality.

Download PDF
Learn more
Intensive Care Medicine Journal
Key findings
  • Superior discrimination to previous models (AUC ROC 0.848)
  • Specific calibration for different geographic regions
  • Single collection at admission (does not require 24h of data)
  • Validated in a wide base of patients from 35 countries
  • Considers differences between regional health systems

Why choose RISKENTIA?

Accurate Assessment

Based on scientific data and internationally validated, SAPS3 offers specific regional calibration for different populations.

Time Saving

Intuitive interface that allows quick and efficient patient assessment, collecting data only from the first hours of ICU admission.

Detailed Reports

Automatic generation of reports with SMR (Standardized Mortality Ratio) metrics to compare observed with predicted mortality.

Scientific Methodology of SAPS3

The three parts of SAPS3 score:

Age, comorbidities, use of vasoactive drugs, length of hospital stay, location before ICU admission.

These variables represent the chronic health condition and contribute about 50% of the predictive power of the score.

Reason for admission, type of admission (planned or not), surgical interventions, infection and infection site.

These variables reflect the acute process that led to ICU admission and contribute approximately 22.5% of predictive power.

Temperature, blood pressure, heart rate, oxygenation, arterial pH, creatinine, bilirubin, platelets, leukocytes, and Glasgow scale.

These represent the patient's acute physiological response to the disease and contribute approximately 27.5% of predictive power.

Regional Calibration

SAPS3 was designed to deal with regional differences in intensive care outcomes, offering specific equations for:

  • Australasia
  • Central and Western Europe
  • Eastern Europe
  • Latin America
  • North America
  • Africa/Middle East

This regional customization significantly improves the accuracy of predictions when compared to previous models.

Main Features

Patient Management

  • Complete registration
  • Clinical history
  • Daily progression

ICU Management

  • Bed control
  • Occupancy rate
  • Patient distribution

Data Analysis

  • Real-time statistics
  • Interactive charts
  • Custom reports

Security

  • Encrypted data
  • Access control
  • Automatic backup

Plans and Pricing

Free

USD 0.00/month

Try for 30 days

  • Access to all features
  • 30 days free
  • 1 ICU
  • Up to 10 beds
  • 1 user
  • Reports
Get Started
Popular

Basic

USD 20.00/month

USD 240.00 per year

  • 1 year
  • Up to 3 ICUs
  • Up to 30 beds
  • Up to 3 users
  • Reports
  • Email support
Get Started

Enterprise

Contact Us

Ideal for large hospitals

  • Unlimited ICUs
  • Unlimited beds
  • Unlimited users
  • Reports
  • Email support
  • Exclusive training
Talk to a Consultant

Ready to improve your ICU management?

Start now with a 30-day free trial.

Frequently Asked Questions

SAPS3 is calculated based on 20 variables, including patient characteristics, comorbidities, acute conditions, and physiological variables. The system uses a specific algorithm to calculate the total score and estimate the probability of mortality. The general logit equation is: logit = -32.6659 + ln(SAPS3 score + 20.5958) × 7.3068, and the probability of death is calculated as: e^logit/(1+e^logit).

SAPS3 is more recent and was developed with a larger and more diverse database. It offers mortality estimates specific to different geographic regions, is collected only once at admission (does not require 24h of observation like other systems), and is considered more accurate in contemporary populations. Unlike APACHE and SAPS2, SAPS3 does not require commercial licensing for clinical or research use.

SAPS3 provides a total score and a probability of mortality. The higher score indicates greater severity, and the probability of mortality helps estimate the risk of hospital death. To evaluate ICU performance, the standardized mortality ratio (SMR) is calculated, dividing the observed mortality by the predicted mortality. An SMR less than 1 indicates performance better than expected, while an SMR greater than 1 indicates performance below expectations.

We offer a 30-day free trial period for all plans. During this period, you will have full access to all features of the chosen plan, with no commitment. No credit card is required to start the trial.

Yes! You can upgrade or downgrade your plan at any time. Changes will be reflected in the next billing cycle. Contact our support to change your plan.

Contact Us

Have a question? Our team is ready to help.