Healthcare OS · Risk Stratification

Risk scores you can defend and act on.

IASORA scores every patient across 34 factors, shows the weight and source behind each one, proves its accuracy on your own history before go-live, and turns each risk level into governed clinical action.

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0.75 to 0.80 AUROC on 30-day readmission · validated on your population before go-live · every factor traceable

A score nobody can explain is a score no clinician will act on and no board will sign off.

Platform sequence

From score to coordinated care.

Four steps on one record, none of them a batch job.

Step 1

Ingest the record

Conditions, medications, labs, vitals, encounters, care gaps and utilisation in one longitudinal record per patient.

Step 2

Score the patient

A 0 to 100 composite across four weighted risk areas, from a deterministic baseline, established clinical indices and a governed learned layer.

Step 3

Explain the number

Every point traces to its factor, weight and data source, with tier changes over time and clinical triggers in plain language.

Step 4

Trigger the care

Risk levels map to action queues. Outreach starts, response windows are enforced, and anything unanswered escalates to a care manager.

Population view

Your whole panel, stratified and current.

Risk stratification overview showing how many patients hold a current score, the share at rising risk or above, the distribution across five risk levels from preventive to complex, and the population average for each of the four weighted risk areas.
Every patient with a current score across five levels, with the population average for each weighted risk area. The share at rising risk or above sets your capacity plan.

Glass-box architecture

Every weight visible. Alerts only raise priority.

Four weighted risk areas, 34 factors, one composite. Clinical alert rules can raise a patient's action priority but never lower it, so a settled history cannot average away an acute event.

How an IASORA risk score is composed and how a risk level can change The composite score is built from four weighted risk areas: clinical risk and documentation integrity at 30 per cent over 11 factors, utilisation and cost risk at 30 per cent over 9 factors, continuity and access risk at 20 per cent over 7 factors, and quality and outcome risk at 20 per cent over 7 factors. Separately, action priority runs across five levels, from level 0 preventive through stable, rising risk and high risk to level 4 complex or escalating. A clinical alert rule can raise a patient's level, and no rule can automatically lower one. COMPOSITE SCORE · 0 TO 100 30% 30% 20% 20% Clinical risk anddocumentation integrity Utilisation andcost risk Continuity andaccess risk Quality andoutcome risk 11 factors 9 factors 7 factors 7 factors ACTION PRIORITY · LEVEL 0 TO LEVEL 4 A clinical alert rule can raise a patient's level No rule can automatically lower one Preventive Stable Rising risk High risk Complex Level 0 Level 1 Level 2 Level 3 Level 4

The score is baseline severity; the level is action priority. Keeping them apart lets a readmission or a missed post-discharge follow-up raise a patient today without rewriting a score the readmission has not yet earned.

In the product

The rule, and the patient it moved.

Clinical alert rules listing the level each rule raises a patient to, the condition that triggers it, and how many patients it has fired for, above a banner stating that rules never lower a level.
Three clinical alert rules, each with the level it raises a patient to and how often it has fired. Rules are inspectable, versioned and can never lower a level.
A patient score breakdown showing a baseline risk score of 33 out of 100, a risk level of 3 for high risk, the three clinical alerts that caused the escalation, and a timeline of every risk level the patient has held over the preceding month.
A baseline of 33 puts this patient at rising risk. Three clinical alerts raise the priority to high risk, with the reason on the record and every tier change kept alongside it.

Operational impact

The score triggered the care.

The score said rising risk
A baseline of 33 / 100 puts her at Level 2, in a cohort of several thousand. No care manager would reach her this month.
The rules said high risk
A critical domain alert, heart-failure decompensation signs, and an uncontrolled diabetes trend. Action priority raised to Level 3, with the trigger recorded.
What IASORA did
Opened an urgent care manager task, started outreach in her language on an enforced countdown, notified her PCP and wrote the tier change to her chart.

Platform capabilities

Built to survive clinical, actuarial and board review.

Transparent 34-factor engine

Four weighted risk areas, 34 factors, one 0 to 100 composite.

Established clinical indices

NEWS2, heart failure risk, CHA₂DS₂-VASc, eGFR on CKD-EPI 2021, Wells DVT and Morse Fall, alongside Charlson, Elixhauser, HHS-HCC, LACE and NHS eFrailty.

External model adapters

Connect a third-party or proprietary scoring engine, including ACG-compatible endpoints, without custom integration work.

Governed learned layer

An optional learned adjustment, promoted only after accuracy, calibration, time-split and fairness checks pass. Reversible in one step.

Continuous re-scoring

Scores recalculate as ADT feeds, results and encounters land. No nightly batch.

Versioned model governance

Read-only standard models with tenant-tuned copies. Every weight, threshold and alert rule change is versioned with an audit diff.

Proven accuracy

Validated on your historical data before deployment.

Calibration and accuracy are proven on your own retrospective data before any production workflow goes live. Three outcomes are measured.

30-day readmissionPost-discharge readmission likelihood, used to target transition-of-care workflows.
30-day ED visitRising-risk patients likely to need the emergency department soon.
90-day inpatient admissionMedium-term deterioration, used to trigger proactive care management.

AUROC measures how well a model separates higher-risk from lower-risk patients: 0.5 is a coin toss, 1.0 is perfect. IASORA scores 0.75 to 0.80 on 30-day readmission in retrospective evaluation across a 323,000-patient history. Yours is measured the same way, on your population, before go-live.

Implementation

A risk score you can defend at the board and in the clinic.

Bring a cohort and a year of history. We validate the engine on your data before go-live, then show how each risk level becomes governed clinical action.

Book a demo See it running in Care Hub →