# mSOAR score mSOAR Status: LIVE Price: $0.005 USDC `GET /api/calc/msoar` HTML: https://magentlab.com/docs/msoar Markdown: https://magentlab.com/docs/msoar.md Not a medical device. Not a diagnosis, dose, or listing recommendation. ## What it computes Compute the Abdul-Rahim 2016 modified SOAR (mSOAR) integer score for early mortality after acute stroke from stroke subtype, OCSP, age, prestroke mRS, and caller-assigned NIHSS bands. ## When to use When an agent has caller-assigned stroke subtype, OCSP class, age, prestroke mRS, and NIHSS total and needs the published mSOAR total and Table 2 derivation early-mortality percents, without inventing an NIHSS item exam or a care-withdrawal decision. ## When not to use - Not a medical device and not a prognosis to withdraw care. - This is mSOAR (SOAR plus NIHSS), not original SOAR without NIHSS. - The caller assigns ischemic vs hemorrhagic subtype, OCSP (LACS/PACS/POCS/TACS), prestroke mRS 0-5, and NIHSS total 0-42. magent does not examine the patient or score NIHSS items (that is a separate tool). - Derivation used in-hospital mortality in the Anglia Stroke and Heart Clinical Network; validation used 90-day mortality in Glasgow cohorts (Abdul-Rahim 2016). Table 2 derivation percents are reported for scores 0-1 through 7; scores 8-9 are possible arithmetically and have no tabulated percent. - Even at the paper's preferred cut point, mSOAR is not suitable as the sole basis for therapeutic decisions (Abdul-Rahim 2016 Discussion). ## Formula ``` mSOAR = age (≤65 0, 66-85 1, >85 2) + subtype (infarct 0, hemorrhage 1) + OCSP (LACS/PACS 0, POCS 1, TACS 2) + prestroke mRS (0-2 0, 3-4 1, 5 2) + NIHSS (0-4 0, 5-10 1, ≥11 2; 11-20 and ≥21 both 2); Abdul-Rahim 2016 Table 1 bands and Suppl Table I NIHSS integers; max 9; Table 2 derivation early mortality 1.0/1.5/6.5/9.2/19.5/26.2/49.2% for scores 0-1/2/3/4/5/6/7 ``` ## Citation [Derivation and Validation of a Novel Prognostic Scale (Modified–Stroke Subtype, Oxfordshire Community Stroke Project Classification, Age, and Prestroke Modified Rankin) to Predict Early Mortality in Acute Stroke](https://doi.org/10.1161/STROKEAHA.115.009898) Abdul-Rahim AH, Quinn TJ, Alder S, Clark AB, Musgrave SD, Langhorne P, Potter JF, Myint PK Stroke. 2016;47(1):74-79 DOI: [10.1161/STROKEAHA.115.009898](https://doi.org/10.1161/STROKEAHA.115.009898) ## Worked example ### Lowest published points in each component Given: `age=18, nihss=0, ocsp=lacs, prestroke_mrs=0, stroke_subtype=infarct` 1. Age 18 is ≤65 → 0; infarct → 0; OCSP LACS → 0; prestroke mRS 0 is 0-2 → 0; NIHSS 0 is 0-4 → 0 2. Score = 0 (max 9); Table 2 derivation early mortality 1.0% (scores 0-1) ### Published Table 2 top row (score 7) Given: `age=86, nihss=0, ocsp=tacs, prestroke_mrs=5, stroke_subtype=hemorrhage` 1. Age 86 is >85 → 2; hemorrhage → 1; TACS → 2; prestroke mRS 5 → 2; NIHSS 0 is 0-4 → 0 2. Score = 7 (max 9); Table 2 derivation early mortality 49.2% ## Also searched as - modified SOAR - mSOAR score - modified-stroke subtype OCSP age Rankin - Abdul-Rahim mSOAR - NIHSS SOAR stroke mortality - early mortality acute stroke mSOAR - OCSP LACS PACS POCS TACS mSOAR ## Parameters - `age` (integer, required): Age in years (18-120). Abdul-Rahim 2016 Table 1: ≤65 scores 0; 66-85 scores 1; >85 scores 2. Age 85 is the 66-85 band. - `stroke_subtype` (string, required): Caller-assigned stroke subtype (Abdul-Rahim 2016 Methods / Table 1). infarct (ischemic infarction) scores 0; hemorrhage scores 1. Case-insensitive. magent does not read imaging. - `ocsp` (string, required): Caller-assigned Oxfordshire Community Stroke Project class (Abdul-Rahim 2016 Table 1). lacs or pacs scores 0; pocs scores 1; tacs scores 2. Case-insensitive. magent does not examine the patient. - `prestroke_mrs` (integer, required): Caller-assigned prestroke modified Rankin grade 0-5. SOAR weights used by mSOAR: 0-2 scores 0; 3-4 scores 1; 5 scores 2. Table 1 lists cohort counts as 0-1 / 2-3 / 4-5, not those integer weights. magent does not interview the patient. - `nihss` (integer, required): Caller-assigned NIH Stroke Scale total (integer 0-42), not an item exam. Abdul-Rahim 2016 Suppl Table I / Table 1: 0-4 scores 0; 5-10 scores 1; 11-20 and ≥21 both score 2. magent does not compute NIHSS or examine the patient. ## Bulk (POST) POST the same path with a JSON items array. The first item is the GET unit; each additional item is $0.002. Invalid items return HTTP 400 before settlement. Method: `POST /api/calc/msoar` Max items: 25 Price: unit_amount + extra_item_amount * (n - 1) (unit 5000 atomic, extra 2000 atomic) Status: PREVIEW - 1 to 25 items. Each item uses the same keys as the GET query parameters. - POST of 1 item costs the same as GET. Lists longer than 25: chunk into multiple POSTs. Extra items still execute; do not pad dummy rows. - The first invalid item fails the whole request (index in the 400 JSON). You are not charged. - HTTP 200 is {count, path, items}. Each items[i] is the GET 200 body for that row. - Catalog misses (empty matches, found=false) stay paid 200s inside that slot. - x402 resource URL is this path plus n and body_sha256. Browsers that prefer text/html get the same paywall as GET; Pay retries POST with the same items. Example request: ```json { "items": [ { "age": "18", "nihss": "0", "ocsp": "lacs", "prestroke_mrs": "0", "stroke_subtype": "infarct" }, { "age": "18", "nihss": "0", "ocsp": "lacs", "prestroke_mrs": "0", "stroke_subtype": "infarct" } ] } ``` Human paywall (two-item fixture): https://api.magentlab.com/paywall/bulk/msoar Example 200: ```json { "count": 2, "path": "/api/calc/msoar", "items": [ { "components": [ { "value": 18, "factor": "age", "points": 0, "present": false }, { "value": "infarct", "factor": "stroke_subtype", "points": 0, "present": false }, { "value": "lacs", "factor": "ocsp", "points": 0, "present": false }, { "value": 0, "factor": "prestroke_mrs", "points": 0, "present": false }, { "value": 0, "factor": "nihss", "points": 0, "present": false } ], "disclaimer": "Not a medical device. Deterministic published-formula or published-code output for autonomous agents. A licensed clinician remains responsible for patient care and billing submissions.", "age_years": 18, "citation": { "authors": "Abdul-Rahim AH, Quinn TJ, Alder S, Clark AB, Musgrave SD, Langhorne P, Potter JF, Myint PK", "doi": "10.1161/STROKEAHA.115.009898", "id": "abdul-rahim-2016", "pmid": "26578661", "source": "Stroke. 2016;47(1):74-79", "title": "Derivation and Validation of a Novel Prognostic Scale (Modified–Stroke Subtype, Oxfordshire Community Stroke Project Classification, Age, and Prestroke Modified Rankin) to Predict Early Mortality in Acute Stroke" }, "formula": "msoar", "formula_expression": "mSOAR = age (≤65 0, 66-85 1, >85 2) + subtype (infarct 0, hemorrhage 1) + OCSP (LACS/PACS 0, POCS 1, TACS 2) + prestroke mRS (0-2 0, 3-4 1, 5 2) + NIHSS (0-4 0, 5-10 1, ≥11 2; 11-20 and ≥21 both 2); Abdul-Rahim 2016 Table 1 bands and Suppl Table I NIHSS integers; max 9; Table 2 derivation early mortality 1.0/1.5/6.5/9.2/19.5/26.2/49.2% for scores 0-1/2/3/4/5/6/7", "max_score": 9, "score": 0, "nihss": 0, "early_mortality_percent": 1.0, "ocsp": "lacs", "prestroke_mrs": 0, "stroke_subtype": "infarct" }, { "components": [ { "value": 18, "factor": "age", "points": 0, "present": false }, { "value": "infarct", "factor": "stroke_subtype", "points": 0, "present": false }, { "value": "lacs", "factor": "ocsp", "points": 0, "present": false }, { "value": 0, "factor": "prestroke_mrs", "points": 0, "present": false }, { "value": 0, "factor": "nihss", "points": 0, "present": false } ], "disclaimer": "Not a medical device. Deterministic published-formula or published-code output for autonomous agents. A licensed clinician remains responsible for patient care and billing submissions.", "age_years": 18, "citation": { "authors": "Abdul-Rahim AH, Quinn TJ, Alder S, Clark AB, Musgrave SD, Langhorne P, Potter JF, Myint PK", "doi": "10.1161/STROKEAHA.115.009898", "id": "abdul-rahim-2016", "pmid": "26578661", "source": "Stroke. 2016;47(1):74-79", "title": "Derivation and Validation of a Novel Prognostic Scale (Modified–Stroke Subtype, Oxfordshire Community Stroke Project Classification, Age, and Prestroke Modified Rankin) to Predict Early Mortality in Acute Stroke" }, "formula": "msoar", "formula_expression": "mSOAR = age (≤65 0, 66-85 1, >85 2) + subtype (infarct 0, hemorrhage 1) + OCSP (LACS/PACS 0, POCS 1, TACS 2) + prestroke mRS (0-2 0, 3-4 1, 5 2) + NIHSS (0-4 0, 5-10 1, ≥11 2; 11-20 and ≥21 both 2); Abdul-Rahim 2016 Table 1 bands and Suppl Table I NIHSS integers; max 9; Table 2 derivation early mortality 1.0/1.5/6.5/9.2/19.5/26.2/49.2% for scores 0-1/2/3/4/5/6/7", "max_score": 9, "score": 0, "nihss": 0, "early_mortality_percent": 1.0, "ocsp": "lacs", "prestroke_mrs": 0, "stroke_subtype": "infarct" } ] } ``` ## Response fields - `formula` (string): msoar - `formula_expression` (string): Exact expression used - `score` (integer): mSOAR points 0-9 - `max_score` (integer): Always 9 - `early_mortality_percent` (number): Abdul-Rahim 2016 Table 2 derivation observed early mortality percent for scores 0-1 through 7; null if not tabulated (8-9) - `age_years` (integer): Age used for Table 1 age points - `stroke_subtype` (string): infarct or hemorrhage used for subtype points - `ocsp` (string): lacs, pacs, pocs, or tacs used for OCSP points - `prestroke_mrs` (integer): Caller-assigned prestroke mRS used for SOAR mRS points - `nihss` (integer): Caller-assigned NIHSS used for NIHSS points - `components` (array): Per-factor points - `citation` (object): Abdul-Rahim 2016 Stroke citation - `disclaimer` (string): Not-a-device notice ## Example JSON Frozen fixture. Not a live lookup. ```json { "components": [ { "value": 18, "factor": "age", "points": 0, "present": false }, { "value": "infarct", "factor": "stroke_subtype", "points": 0, "present": false }, { "value": "lacs", "factor": "ocsp", "points": 0, "present": false }, { "value": 0, "factor": "prestroke_mrs", "points": 0, "present": false }, { "value": 0, "factor": "nihss", "points": 0, "present": false } ], "disclaimer": "Not a medical device. Deterministic published-formula or published-code output for autonomous agents. A licensed clinician remains responsible for patient care and billing submissions.", "age_years": 18, "citation": { "authors": "Abdul-Rahim AH, Quinn TJ, Alder S, Clark AB, Musgrave SD, Langhorne P, Potter JF, Myint PK", "doi": "10.1161/STROKEAHA.115.009898", "id": "abdul-rahim-2016", "pmid": "26578661", "source": "Stroke. 2016;47(1):74-79", "title": "Derivation and Validation of a Novel Prognostic Scale (Modified–Stroke Subtype, Oxfordshire Community Stroke Project Classification, Age, and Prestroke Modified Rankin) to Predict Early Mortality in Acute Stroke" }, "formula": "msoar", "formula_expression": "mSOAR = age (≤65 0, 66-85 1, >85 2) + subtype (infarct 0, hemorrhage 1) + OCSP (LACS/PACS 0, POCS 1, TACS 2) + prestroke mRS (0-2 0, 3-4 1, 5 2) + NIHSS (0-4 0, 5-10 1, ≥11 2; 11-20 and ≥21 both 2); Abdul-Rahim 2016 Table 1 bands and Suppl Table I NIHSS integers; max 9; Table 2 derivation early mortality 1.0/1.5/6.5/9.2/19.5/26.2/49.2% for scores 0-1/2/3/4/5/6/7", "max_score": 9, "score": 0, "nihss": 0, "early_mortality_percent": 1.0, "ocsp": "lacs", "prestroke_mrs": 0, "stroke_subtype": "infarct" } ``` ## Errors - HTTP 400 `invalid_msoar`: mSOAR inputs must match Abdul-Rahim 2016 stroke subtype, OCSP, age, prestroke mRS, and NIHSS bands. Returned before settlement; you are not charged. - HTTP 400 `invalid_items`: POST body must be a JSON object with only an items array Returned before settlement; you are not charged. - HTTP 400 `invalid_item_count`: items must be an array of 1 to 25 objects Returned before settlement; you are not charged. - HTTP 400 `invalid_item`: each items entry must be a JSON object Returned before settlement; you are not charged. Shared HTTP 402 and 503: https://magentlab.com/docs/payments ## Related tools - [Modified Rankin](https://magentlab.com/docs/modified-rankin) — Return the van Swieten 1988 modified Rankin handicap grade 0-5 from a caller-assigned integer, with the published grade wording. - [THRIVE](https://magentlab.com/docs/thrive) — Compute the Flint 2010 THRIVE (Totaled Health Risks in Vascular Events) score from trichotomized age, trichotomized NIHSS, and the chronic disease scale (hypertension, diabetes mellitus, atrial fibrillation). - [PLAN](https://magentlab.com/docs/plan) — Compute the O'Donnell 2012 PLAN score (preadmission comorbidities, level of consciousness, age, and neurologic deficit) for death and severe disability after acute ischemic stroke from the published Table 4 items. ## Payment Unpaid requests return HTTP 402 even if query parameters or POST items are missing or invalid, so CDP and agents can index the path. After a PAYMENT-SIGNATURE, invalid params return HTTP 400 JSON before settlement. magent does not charge. Fix the params, then request a new 402 quote for that complete URL. Catalog misses (empty matches, found=false) are valid paid 200s. - GET the tool with Accept: application/json (do not send Accept: text/html unless you want the human paywall). - HTTP 402 means you have not paid. Decode the base64 PAYMENT-REQUIRED header. HTTP 503 is not a new quote. - Sign accepts[0] (exact, EIP-3009) with validBefore = now + maxTimeoutSeconds (600 seconds), or accepts[1] (batch-settlement deposit/voucher) on product GET. Ping and POST {items} stay exact. Magent retries transient facilitator 429/5xx before answering. - Retry the same URL with PAYMENT-SIGNATURE (base64 JSON of accepted and payload). Magent attaches canonical extensions.bazaar on CDP verify/settle; echoing 402 bazaar is optional. - Success is HTTP 200 JSON plus PAYMENT-RESPONSE. exact settles before the tool. batch-settlement verifies (and deposit-settles) before the tool and commits the charge after HTTP 2xx. HTTP 503: retry the same PAYMENT-SIGNATURE. Mint a new exact nonce only after a new HTTP 402. - offered `exact` on eip155:8453: Fixed-price USDC on Base. The buyer authorizes the advertised amount (EIP-3009). magent settles before the tool runs (paymentFlow upfront). extra.assetTransferMethod=eip3009 extra.paymentFlow=upfront. - offered `batch-settlement` on eip155:8453: Payment-channel vouchers claimed later in batches. Exact stays accepts[0]. Same-path POST {items} is still exact. extra.assetTransferMethod=eip3009 extra.paymentFlow=authorization. - not offered `upto`: Not offered. Usage-based: buyer authorizes a ceiling, seller settles the actual amount after work. Reserved for a future metered tool. Not for current calculators or code search. Same-path POST {items} is still scheme exact: one EIP-3009 authorization for GET unit plus $0.002 per extra item. That is not x402 batch-settlement (payment channels / vouchers). Shared HTTP 402 and 503 table: https://magentlab.com/docs/payments Stdio MCP (one process per host): https://magentlab.com/docs/mcp ## Guarantees - HTTP 402 is unpaid, including a missing query. After PAYMENT-SIGNATURE, invalid parameters return HTTP 400 before settlement. You are not charged. HTTP 402 never includes the tool JSON. - exact: settlement finishes before the tool (paymentFlow upfront). batch-settlement: verify/deposit before the tool; chargedCumulativeAmount commits after HTTP 2xx. Uncertain or failed settlement fails closed (HTTP 503). Retry the same PAYMENT-SIGNATURE. - HTTP 402 is unpaid only. Do not sign a second authorization because of a 503. - Execution is timeout-bounded and concurrency-capped. - Calculator inputs are stored encrypted for allowlisted operators (Magent Console). They are not in public logs, SSH lookups, catalog, or rollups. Request logs store path without query.