# Park 2016 IE 6-month mortality score IE mortality Status: LIVE Price: $0.005 USDC `GET /api/calc/ie_mortality` HTML: https://magentlab.com/docs/ie-mortality Markdown: https://magentlab.com/docs/ie-mortality.md Not a medical device. Not a diagnosis, dose, or listing recommendation. ## What it computes Compute the Park 2016 ICE simplified risk score for 6-month mortality in infective endocarditis from age and caller-assigned Table 5 flags, and return the score, quadratic 6-month mortality percent, and whether score >= 8. ## When to use When an agent already has Park 2016 Table 5 inputs (age, dialysis, nosocomial or prosthetic IE, symptom duration, organism, vegetation site, NYHA class 3 or 4, stroke, paravalvular complication, persistent bacteremia, and whether surgery was performed) and needs the published simplified score and 6-month mortality percent, not a diagnosis or a surgery decision. ## When not to use - Not a medical device. Not a diagnosis of infective endocarditis. - magent does not examine the patient, interpret cultures or echocardiography, or decide surgery. Flags are caller-assigned. - Table 5 simplified risk score only (Park 2016 ICE). Does not apply Table 6 quintile bands. score_ge_8 is the paper ROC operating point (simplified score >= 8), not a treatment cutoff. - Staphylococcus aureus and viridans group streptococci are independent Table 5 rows; both may be true. - Age 18-120 is the magent adult clamp via Params.age/1, not a published Park 2016 age range. Not Durack 1994 Duke diagnostic criteria. ## Formula ``` Park 2016 Table 5 simplified IE 6-month mortality score = constant 4 + age (<=45: 0, 46-60: 2, 61-70: 3, >70: 4) + dialysis 3 + nosocomial_ie 2 + prosthetic_ie 1 + symptoms_gt_1_month -1 + staphylococcus_aureus 1 + viridans_group_streptococci -2 + aortic_vegetation 1 + mitral_vegetation 1 + nyha_class_3_or_4 3 + stroke 2 + paravalvular_complication 2 + persistent_bacteremia 2 + surgical_treatment -2; mortality_percent = 2.416*score + 0.109*score*score - 4.849 rounded to 1 decimal (Table 5 footnote); score_ge_8 iff score >= 8 (paper ROC operating point). Not Table 6 quintile bands ``` ## Citation [Validated Risk Score for Predicting 6-Month Mortality in Infective Endocarditis](https://doi.org/10.1161/JAHA.115.003016) Park LP, Chu VH, Peterson G, et al. J Am Heart Assoc. 2016;5(4):e003016 DOI: [10.1161/JAHA.115.003016](https://doi.org/10.1161/JAHA.115.003016) ## Worked example ### Age 40, all Table 5 flags false Given: `age=40, aortic_vegetation=false, dialysis=false, mitral_vegetation=false, nosocomial_ie=false, nyha_class_3_or_4=false, paravalvular_complication=false, persistent_bacteremia=false, prosthetic_ie=false, staphylococcus_aureus=false, stroke=false, surgical_treatment=false, symptoms_gt_1_month=false, viridans_group_streptococci=false` 1. Constant 4; age <=45 -> 0; all flags false -> 0 2. Score = 4; mortality_percent = 2.416*4 + 0.109*16 - 4.849 = 6.559 -> 6.6; score_ge_8 false ### Age 80 with dialysis (score >= 8) Given: `age=80, aortic_vegetation=false, dialysis=true, mitral_vegetation=false, nosocomial_ie=false, nyha_class_3_or_4=false, paravalvular_complication=false, persistent_bacteremia=false, prosthetic_ie=false, staphylococcus_aureus=false, stroke=false, surgical_treatment=false, symptoms_gt_1_month=false, viridans_group_streptococci=false` 1. Constant 4; age >70 -> 4; dialysis -> +3 2. Score = 11; score_ge_8 true ## Also searched as - IE mortality risk score - Park IE mortality - infective endocarditis 6-month mortality - ICE IE mortality score - Park 2016 endocarditis score - simplified IE risk score - IE 6-month mortality ## Parameters - `age` (integer, required): Age in years (integer 18-120). Park 2016 Table 5: <=45 scores 0; 46-60 scores 2; 61-70 scores 3; >70 scores 4. Age 45 scores 0; 46 scores 2; 70 scores 3; 71 scores 4. magent does not examine the patient. - `dialysis` (boolean, required): History of dialysis as assigned by the caller (Park 2016 Table 5). true or false. +3 if true. magent does not review dialysis records. - `nosocomial_ie` (boolean, required): Nosocomial infective endocarditis as assigned by the caller (Park 2016 Table 5). true or false. +2 if true. magent does not classify acquisition. - `prosthetic_ie` (boolean, required): Prosthetic-valve infective endocarditis as assigned by the caller (Park 2016 Table 5). true or false. +1 if true. magent does not examine the valve. - `symptoms_gt_1_month` (boolean, required): Symptoms for more than 1 month before admission as assigned by the caller (Park 2016 Table 5). true or false. -1 if true. magent does not date symptom onset. - `staphylococcus_aureus` (boolean, required): Staphylococcus aureus as assigned by the caller (Park 2016 Table 5). true or false. +1 if true. Independent of viridans_group_streptococci; both may be true. magent does not interpret cultures. - `viridans_group_streptococci` (boolean, required): Viridans group streptococci as assigned by the caller (Park 2016 Table 5). true or false. -2 if true. Independent of staphylococcus_aureus; both may be true. magent does not interpret cultures. - `aortic_vegetation` (boolean, required): Aortic vegetation as assigned by the caller (Park 2016 Table 5). true or false. +1 if true. Independent of mitral_vegetation. magent does not read an echocardiogram. - `mitral_vegetation` (boolean, required): Mitral vegetation as assigned by the caller (Park 2016 Table 5). true or false. +1 if true. Independent of aortic_vegetation. magent does not read an echocardiogram. - `nyha_class_3_or_4` (boolean, required): NYHA class 3 or 4 heart failure as assigned by the caller (Park 2016 Table 5). true or false. +3 if true. magent does not examine the patient or assign NYHA class. - `stroke` (boolean, required): Stroke as assigned by the caller (Park 2016 Table 5). true or false. +2 if true. magent does not diagnose stroke. - `paravalvular_complication` (boolean, required): Paravalvular complication as assigned by the caller (Park 2016 Table 5). true or false. +2 if true. magent does not read imaging. - `persistent_bacteremia` (boolean, required): Persistent bacteremia as assigned by the caller (Park 2016 Table 5). true or false. +2 if true. magent does not interpret cultures. - `surgical_treatment` (boolean, required): Surgical treatment as assigned by the caller (Park 2016 Table 5). true or false. -2 if true. magent does not decide surgery. ## 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/ie_mortality` 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": "40", "aortic_vegetation": "false", "dialysis": "false", "mitral_vegetation": "false", "nosocomial_ie": "false", "nyha_class_3_or_4": "false", "paravalvular_complication": "false", "persistent_bacteremia": "false", "prosthetic_ie": "false", "staphylococcus_aureus": "false", "stroke": "false", "surgical_treatment": "false", "symptoms_gt_1_month": "false", "viridans_group_streptococci": "false" }, { "age": "40", "aortic_vegetation": "false", "dialysis": "false", "mitral_vegetation": "false", "nosocomial_ie": "false", "nyha_class_3_or_4": "false", "paravalvular_complication": "false", "persistent_bacteremia": "false", "prosthetic_ie": "false", "staphylococcus_aureus": "false", "stroke": "false", "surgical_treatment": "false", "symptoms_gt_1_month": "false", "viridans_group_streptococci": "false" } ] } ``` Human paywall (two-item fixture): https://api.magentlab.com/paywall/bulk/ie-mortality Example 200: ```json { "count": 2, "path": "/api/calc/ie_mortality", "items": [ { "components": [ { "factor": "constant", "points": 4, "present": true }, { "value": 40, "factor": "age", "points": 0, "present": true }, { "factor": "dialysis", "points": 0, "present": false }, { "factor": "nosocomial_ie", "points": 0, "present": false }, { "factor": "prosthetic_ie", "points": 0, "present": false }, { "factor": "symptoms_gt_1_month", "points": 0, "present": false }, { "factor": "staphylococcus_aureus", "points": 0, "present": false }, { "factor": "viridans_group_streptococci", "points": 0, "present": false }, { "factor": "aortic_vegetation", "points": 0, "present": false }, { "factor": "mitral_vegetation", "points": 0, "present": false }, { "factor": "nyha_class_3_or_4", "points": 0, "present": false }, { "factor": "stroke", "points": 0, "present": false }, { "factor": "paravalvular_complication", "points": 0, "present": false }, { "factor": "persistent_bacteremia", "points": 0, "present": false }, { "factor": "surgical_treatment", "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.", "citation": { "authors": "Park LP, Chu VH, Peterson G, et al.", "doi": "10.1161/JAHA.115.003016", "id": "park-2016", "pmid": "27091179", "source": "J Am Heart Assoc. 2016;5(4):e003016", "title": "Validated Risk Score for Predicting 6-Month Mortality in Infective Endocarditis" }, "formula": "ie_mortality", "formula_expression": "Park 2016 Table 5 simplified IE 6-month mortality score = constant 4 + age (<=45: 0, 46-60: 2, 61-70: 3, >70: 4) + dialysis 3 + nosocomial_ie 2 + prosthetic_ie 1 + symptoms_gt_1_month -1 + staphylococcus_aureus 1 + viridans_group_streptococci -2 + aortic_vegetation 1 + mitral_vegetation 1 + nyha_class_3_or_4 3 + stroke 2 + paravalvular_complication 2 + persistent_bacteremia 2 + surgical_treatment -2; mortality_percent = 2.416*score + 0.109*score*score - 4.849 rounded to 1 decimal (Table 5 footnote); score_ge_8 iff score >= 8 (paper ROC operating point). Not Table 6 quintile bands", "age_years": 40, "score": 4, "mortality_percent": 6.6, "score_ge_8": false }, { "components": [ { "factor": "constant", "points": 4, "present": true }, { "value": 40, "factor": "age", "points": 0, "present": true }, { "factor": "dialysis", "points": 0, "present": false }, { "factor": "nosocomial_ie", "points": 0, "present": false }, { "factor": "prosthetic_ie", "points": 0, "present": false }, { "factor": "symptoms_gt_1_month", "points": 0, "present": false }, { "factor": "staphylococcus_aureus", "points": 0, "present": false }, { "factor": "viridans_group_streptococci", "points": 0, "present": false }, { "factor": "aortic_vegetation", "points": 0, "present": false }, { "factor": "mitral_vegetation", "points": 0, "present": false }, { "factor": "nyha_class_3_or_4", "points": 0, "present": false }, { "factor": "stroke", "points": 0, "present": false }, { "factor": "paravalvular_complication", "points": 0, "present": false }, { "factor": "persistent_bacteremia", "points": 0, "present": false }, { "factor": "surgical_treatment", "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.", "citation": { "authors": "Park LP, Chu VH, Peterson G, et al.", "doi": "10.1161/JAHA.115.003016", "id": "park-2016", "pmid": "27091179", "source": "J Am Heart Assoc. 2016;5(4):e003016", "title": "Validated Risk Score for Predicting 6-Month Mortality in Infective Endocarditis" }, "formula": "ie_mortality", "formula_expression": "Park 2016 Table 5 simplified IE 6-month mortality score = constant 4 + age (<=45: 0, 46-60: 2, 61-70: 3, >70: 4) + dialysis 3 + nosocomial_ie 2 + prosthetic_ie 1 + symptoms_gt_1_month -1 + staphylococcus_aureus 1 + viridans_group_streptococci -2 + aortic_vegetation 1 + mitral_vegetation 1 + nyha_class_3_or_4 3 + stroke 2 + paravalvular_complication 2 + persistent_bacteremia 2 + surgical_treatment -2; mortality_percent = 2.416*score + 0.109*score*score - 4.849 rounded to 1 decimal (Table 5 footnote); score_ge_8 iff score >= 8 (paper ROC operating point). Not Table 6 quintile bands", "age_years": 40, "score": 4, "mortality_percent": 6.6, "score_ge_8": false } ] } ``` ## Response fields - `formula` (string): ie_mortality - `formula_expression` (string): Exact expression used - `score` (integer): Park 2016 Table 5 simplified risk score including the constant 4. May be negative. Not Table 6 quintile bands. - `mortality_percent` (number): Probability of 6-month mortality from the Table 5 footnote quadratic 2.416*score + 0.109*score*score - 4.849, rounded to 1 decimal. Not clamped. - `score_ge_8` (boolean): true iff simplified risk score >= 8 (Park 2016 ROC operating point). Not a treatment cutoff and not a quintile band. - `age_years` (integer): Age used for the Table 5 age term - `components` (array): Per-factor points including the constant - `citation` (object): Park et al. J Am Heart Assoc 2016 citation - `disclaimer` (string): Not-a-device notice ## Example JSON Frozen fixture. Not a live lookup. ```json { "components": [ { "factor": "constant", "points": 4, "present": true }, { "value": 40, "factor": "age", "points": 0, "present": true }, { "factor": "dialysis", "points": 0, "present": false }, { "factor": "nosocomial_ie", "points": 0, "present": false }, { "factor": "prosthetic_ie", "points": 0, "present": false }, { "factor": "symptoms_gt_1_month", "points": 0, "present": false }, { "factor": "staphylococcus_aureus", "points": 0, "present": false }, { "factor": "viridans_group_streptococci", "points": 0, "present": false }, { "factor": "aortic_vegetation", "points": 0, "present": false }, { "factor": "mitral_vegetation", "points": 0, "present": false }, { "factor": "nyha_class_3_or_4", "points": 0, "present": false }, { "factor": "stroke", "points": 0, "present": false }, { "factor": "paravalvular_complication", "points": 0, "present": false }, { "factor": "persistent_bacteremia", "points": 0, "present": false }, { "factor": "surgical_treatment", "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.", "citation": { "authors": "Park LP, Chu VH, Peterson G, et al.", "doi": "10.1161/JAHA.115.003016", "id": "park-2016", "pmid": "27091179", "source": "J Am Heart Assoc. 2016;5(4):e003016", "title": "Validated Risk Score for Predicting 6-Month Mortality in Infective Endocarditis" }, "formula": "ie_mortality", "formula_expression": "Park 2016 Table 5 simplified IE 6-month mortality score = constant 4 + age (<=45: 0, 46-60: 2, 61-70: 3, >70: 4) + dialysis 3 + nosocomial_ie 2 + prosthetic_ie 1 + symptoms_gt_1_month -1 + staphylococcus_aureus 1 + viridans_group_streptococci -2 + aortic_vegetation 1 + mitral_vegetation 1 + nyha_class_3_or_4 3 + stroke 2 + paravalvular_complication 2 + persistent_bacteremia 2 + surgical_treatment -2; mortality_percent = 2.416*score + 0.109*score*score - 4.849 rounded to 1 decimal (Table 5 footnote); score_ge_8 iff score >= 8 (paper ROC operating point). Not Table 6 quintile bands", "age_years": 40, "score": 4, "mortality_percent": 6.6, "score_ge_8": false } ``` ## Errors - HTTP 400 `invalid_age`: age must be an integer from 18 to 120 Returned before settlement; you are not charged. - HTTP 400 `invalid_flag`: boolean clinical flags must be true or false 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 - [Duke](https://magentlab.com/docs/duke) — Apply the Durack 1994 original Duke criteria for infective endocarditis and return definite, possible, or rejected from caller-assigned pathologic, major, minor, and rejected flags. ## 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.