Steyerberg 2008 IMPACT prognostic score for 6-month mortality and unfavorable ou
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.
Asked 1.4x its listed price for its own exampleour last check, 2026-09-28
1 of 1checks answered this week
337 msmedian answer time
$0.005listed price per call
$0.007price it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
POST https://api.magentlab.com/api/calc/impact
| Category | Everything else |
|---|---|
| Provider host | api.magentlab.com |
| Networks | eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 0 from 0 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-09-28 | valid payment request | 402 | $0.007 | 337 ms |
Example input (from the provider)
{
"body": {
"items": [
{
"age": 35,
"edh": false,
"glucose_mmol_l": 10,
"hemoglobin_g_dl": 11,
"hypotension": false,
"hypoxia": false,
"marshall_ct": "II",
"model": "core",
"motor_score": 3,
"pupillary_reactivity": "both",
"tsah": false
},
{
"age": 35,
"edh": false,
"glucose_mmol_l": 10,
"hemoglobin_g_dl": 11,
"hypotension": false,
"hypoxia": false,
"marshall_ct": "II",
"model": "core",
"motor_score": 3,
"pupillary_reactivity": "both",
"tsah": false
}
]
},
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"properties": {
"items": {
"items": {
"properties": {
"age": {
"description": "Age in years (integer 14-90). Steyerberg 2008 Figure 1: \u226430 \u2192 0; 31\u201339 \u2192 1; 40\u201349 \u2192 2; 50\u201359 \u2192 3; 60\u201369 \u2192 4; \u226570 \u2192 5. Chart label 30\u201339 is the decade after \u226430 (age 30 scores 0).",
"type": "integer"
},
"edh": {
"description": "Epidural hematoma (Steyerberg 2008). Required when model is extended or lab. true adds \u22122; false adds 0. Ignored on model=core.",
"type": "boolean"
},
"glucose_mmol_l": {
"description": "Admission glucose in mmol/L (2.8-55.5). Required when model is lab. Steyerberg 2008: <6 \u2192 0; 6\u20138.9 \u2192 1; 9\u201311.9 \u2192 2; 12\u201314.9 \u2192 3; \u226515 \u2192 4. Ignored on core and extended. magent does not assay glucose.",
"type": "number"
},
"hemoglobin_g_dl": {
"description": "Admission hemoglobin in g/dL (3-22). Required when model is lab. Steyerberg 2008: <9 \u2192 3; 9\u201311.9 \u2192 2; 12\u201314.9 \u2192 1; \u226515 \u2192 0. Ignored on core and extended. magent does not assay hemoglobin.",
"type": "number"
},
"hypotension": {
"description": "Hypotension yes or suspected (Steyerberg 2008). Required when model is extended or lab. true adds 2; false adds 0. Ignored on model=core.",
"type": "boolean"
},
"hypoxia": {
"description": "Hypoxia yes or suspected (Steyerberg 2008). Required when model is extended or lab. true adds 1; false adds 0. Ignored on model=core.",
"type": "boolean"
},
"marshall_ct": {
"description": "Marshall CT class I\u2013VI (Steyerberg 2008). Required when model is extended or lab. I \u2192 \u22122; II \u2192 0; III, IV, V, or VI \u2192 2. Ignored on model=core. magent does not read the scan.",
"enum": [
"I",
"II",
"III",
"IV",
"V",
"VI"
],
"type": "string"
},
"model": {
"description": "Steyerberg 2008 IMPACT model. core uses age, motor, and pupils. extended adds hypoxia, hypotension, Marshall CT, tSAH, and EDH. lab adds glucose mmol/L and hemoglobin g/dL. Required; magent does not pick a model.",
"enum": [
"core",
"extended",
"lab"
],
"type": "string"
},
"motor_score": {
"description": "GCS motor integer 1-6 or 9 (untestable/missing) as in Steyerberg 2008. 1 or 2 (none/extension) \u2192 6; 3 (abnormal flexion) \u2192 4; 4 (normal flexion) \u2192 2; 5 or 6 (localizes/obeys) \u2192 0; 9 \u2192 3.",
"type": "integer"
},
"pupillary_reactivity": {
"description": "Pupillary reactivity (Steyerberg 2008). both \u2192 0; one \u2192 2; none \u2192 4. Caller-assigned. magent does not examine pupils.",
"enum": [
"both",
"one",
"none"
],
"type": "string"
},
"tsah": {
"description": "Traumatic subarachnoid hemorrhage (Steyerberg 2008). Required when model is extended or lab. true adds 2; false adds 0. Ignored on model=core.",
"type": "boolean"
}
},
"required": [
"model",
"age",
"motor_score",
"pupillary_reactivity"
],
"type": "object"
},
"maxItems": 25,
"minItems": 1,
"type": "array"
}
},
"required": [
"items"
],
"type": "object"
},
"headers": {
"additionalProperties": {
"type": "string"
},
"type": "object"
},
"method": {
"const": "POST",
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}