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TRISS Survival Probability Calculator (Boyd 1987 MTOS)
x402
TRISS Survival Probability Calculator (Boyd 1987 MTOS) is a paid API for AI agents from api.magentlab.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-15).
Computes TRISS probability of survival using Boyd 1987 original MTOS coefficients from caller-supplied RTS, ISS, age, and trauma mechanism.
Price / call$0.005
Success—
StatusUnknown
How this service works
TRISS (Boyd 1987): probability of survival from a caller-assigned Champion weighted RTS (0.0-7.8408), ISS (1-75), age (AgeIndex 0 if age < 55 else 1), and blunt or penetrating mechanism using original MTOS coefficients. Deterministic published arithmetic with citation. Not a triage order; not NISS; not ASCOT; not Champion 1995 revised coefficients.
Output
Returns a TRISS probability of survival (a decimal between 0 and 1) computed from the Boyd 1987 original MTOS logistic regression coefficients using the supplied weighted RTS, ISS, AgeIndex derived from patient age, and blunt or penetrating mechanism flag. The result is deterministic arithmetic with no model inference.
Example use cases
Trauma registry quality benchmarking
“For our trauma audit, compute the TRISS survival probability for a 38-year-old blunt trauma patient with an RTS of 7.0 and ISS of 16 — use the original Boyd 1987 MTOS coefficients.”
Penetrating trauma outcome estimation
“What is the TRISS probability of survival for a 62-year-old penetrating trauma patient with an RTS of 4.0 and an ISS of 34?”
Elderly blunt trauma scoring
“Run a TRISS calculation for a 70-year-old blunt mechanism trauma patient with an RTS of 5.9 and ISS of 29 — I need the Boyd 1987 survival probability.”
Technical details
Endpoint
GEThttps://api.magentlab.com/api/calc/trissWhen to prefer
Use this endpoint when you need a deterministic, citable implementation of the original Boyd 1987 TRISS formula with MTOS coefficients. Prefer it over manual calculation when building trauma registries, audit tools, or clinical decision-support pipelines that require reproducible, publication-traceable survival probability estimates. Do not use for NISS, ASCOT, or Champion 1995 revised coefficient calculations.
Side effects
- Missing required parameter (mechanism, rts, iss, or age) returns an error
- RTS outside 0.0–7.8408 range may yield validation error or out-of-range result
- ISS outside 1–75 integer range rejected
- Age outside 1–120 rejected
- Caller must pre-compute weighted Champion RTS; endpoint does not recode GCS, SBP, or RR
- Payment failure (x402) if USDC not available
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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