Park 2016 IE 6-month mortality score

IE mortality

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.

LIVE $0.005 USDC GET /api/calc/ie_mortality

Markdown: /docs/ie-mortality.md · Canonical: https://magentlab.com/docs/ie-mortality

Not a medical device. Not a diagnosis, dose, or listing recommendation.

What it computes

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

Title: Validated Risk Score for Predicting 6-Month Mortality in Infective Endocarditis
Authors: Park LP, Chu VH, Peterson G, et al.
Source: J Am Heart Assoc. 2016;5(4):e003016
DOI: 10.1161/JAHA.115.003016

Worked example

Age 40, all Table 5 flags false

Given: age=40aortic_vegetation=falsedialysis=falsemitral_vegetation=falsenosocomial_ie=falsenyha_class_3_or_4=falseparavalvular_complication=falsepersistent_bacteremia=falseprosthetic_ie=falsestaphylococcus_aureus=falsestroke=falsesurgical_treatment=falsesymptoms_gt_1_month=falseviridans_group_streptococci=false

Constant 4; age <=45 -> 0; all flags false -> 0
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=80aortic_vegetation=falsedialysis=truemitral_vegetation=falsenosocomial_ie=falsenyha_class_3_or_4=falseparavalvular_complication=falsepersistent_bacteremia=falseprosthetic_ie=falsestaphylococcus_aureus=falsestroke=falsesurgical_treatment=falsesymptoms_gt_1_month=falseviridans_group_streptococci=false

Constant 4; age >70 -> 4; dialysis -> +3
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

Try

Opens the live endpoint. Unpaid browser requests show the paywall; agents should send Accept: application/json.

/api/calc/ie_mortality?age=40&dialysis=false&nosocomial_ie=false&prosthetic_ie=false&symptoms_gt_1_month=false&staphylococcus_aureus=false&viridans_group_streptococci=false&aortic_vegetation=false&mitral_vegetation=false&nyha_class_3_or_4=false&stroke=false&paravalvular_complication=false&persistent_bacteremia=false&surgical_treatment=false

Full URL: https://api.magentlab.com/api/calc/ie_mortality?age=40&dialysis=false&nosocomial_ie=false&prosthetic_ie=false&symptoms_gt_1_month=false&staphylococcus_aureus=false&viridans_group_streptococci=false&aortic_vegetation=false&mitral_vegetation=false&nyha_class_3_or_4=false&stroke=false&paravalvular_complication=false&persistent_bacteremia=false&surgical_treatment=false

Call

Expect HTTP 402 until you retry with PAYMENT-SIGNATURE. Incomplete query params return HTTP 400 before any quote or charge.

curl -i -H "Accept: application/json" "https://api.magentlab.com/api/calc/ie_mortality?age=40&dialysis=false&nosocomial_ie=false&prosthetic_ie=false&symptoms_gt_1_month=false&staphylococcus_aureus=false&viridans_group_streptococci=false&aortic_vegetation=false&mitral_vegetation=false&nyha_class_3_or_4=false&stroke=false&paravalvular_complication=false&persistent_bacteremia=false&surgical_treatment=false"

Parameters

Name	Type	Required	Description
`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.

POST /api/calc/ie_mortality Max 25 unit_amount + extra_item_amount * (n - 1) extra $0.002 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 (fixture)

{
  "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"
    }
  ]
}

Open bulk paywall →

Opens a two-item fixture on the API host. Unpaid browsers get the same MetaMask paywall as GET; Pay retries POST with those items.

Example 200 (fixture)

{
  "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

Field	Type	Description
`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 2.416score + 0.109score*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

Machine form of the same example. Frozen fixture. Not a live lookup.

{
  "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
}

Client errors (HTTP 400)

Invalid params return 400 without charge. Shared HTTP 402 and 503 meanings: Payments.

HTTP	Code	When
400	`invalid_age`	age must be an integer from 18 to 120 Returned before settlement; you are not charged.
400	`invalid_flag`	boolean clinical flags must be true or false Returned before settlement; you are not charged.
400	`invalid_items`	POST body must be a JSON object with only an items array Returned before settlement; you are not charged.
400	`invalid_item_count`	items must be an array of 1 to 25 objects Returned before settlement; you are not charged.
400	`invalid_item`	each items entry must be a JSON object Returned before settlement; you are not charged.

Related tools

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. Unpaid valid requests return HTTP 402 with a base64 PAYMENT-REQUIRED header. HTTP 503 is not a new quote: retry the same PAYMENT-SIGNATURE. Full handshake and shared payment errors: Payments. Stdio MCP: /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.