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IMPACT Prognostic Score for Traumatic Brain Injury (Steyerberg 2008)
x402
IMPACT Prognostic Score for Traumatic Brain Injury (Steyerberg 2008) is a paid API for AI agents from api.magentlab.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-13).
Calculates the Steyerberg 2008 IMPACT prognostic score for 6-month mortality and unfavorable outcome after traumatic brain injury using core, extended, or lab model variants.
Price / call$0.005
Success—
StatusUnknown
How this service works
Steyerberg 2008 IMPACT prognostic score for 6-month mortality and unfavorable outcome after traumatic brain injury. model=core (age, motor, pupils), extended (plus hypoxia, hypotension, Marshall CT, tSAH, EDH), or lab (plus glucose mmol/L and Hb g/dL). Points and printed logistic LPs from that paper. Not a diagnosis, not MRC CRASH (Perel 2008), and not magent chemotherapy CRASH.
Output
Returns the IMPACT point total, the logistic regression linear predictor (LP) for both 6-month mortality and unfavorable outcome, and the derived probability estimates, all computed from the published Steyerberg 2008 scoring table and logistic function coefficients.
Example use cases
ICU admission TBI risk stratification
“Run the IMPACT core model for a 68-year-old TBI patient with a motor score of 3 and one reactive pupil — what's their estimated 6-month mortality and unfavorable outcome probability?”
Neuro-ICU extended model assessment
“Use the IMPACT extended model to score a 42-year-old severe TBI patient: motor score 1, both pupils unreactive, hypoxia suspected, hypotension no, Marshall CT class IV, tSAH yes, EDH no.”
Lab model with metabolic data
“Compute the Steyerberg 2008 IMPACT lab model for a 35-year-old with GCS motor 4, one non-reactive pupil, no hypoxia, no hypotension, Marshall CT class II, no tSAH, no EDH, glucose 8.2 mmol/L, and hemoglobin 10.5 g/dL.”
Technical details
Endpoint
GEThttps://api.magentlab.com/api/calc/impactWhen to prefer
Choose this endpoint when you need to apply the published Steyerberg 2008 IMPACT prognostic model specifically — not MRC CRASH (Perel 2008) and not any chemotherapy protocol. Use when you need deterministic, point-for-point reproduction of the original paper's scoring table and logistic linear predictors for 6-month post-TBI outcomes, including choice between core (3 variables), extended (8 variables), or lab (10 variables) model tiers.
Side effects
- Missing required parameters (model, age, motor_score, pupillary_reactivity) returns a 400 error
- Extended/lab model fields (hypoxia, hypotension, marshall_ct, tsah, edh) missing when model=extended or lab causes validation error
- Age outside valid range (14–90) or motor score outside 1–6 may be rejected or clamped
- Invalid marshall_ct enum value (not I–VI) returns error
- Payment not included or insufficient results in 402 Payment Required
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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