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Rome IV infant diarrhea

Rome IV Infant Diarrhea

Apply the Benninga 2016 Rome IV G5 Functional Diarrhea diagnostic criteria and return whether the published infant functional diarrhea box holds (rome_iv_infant_diarrhea).

LIVE $0.005 USDC GET /api/calc/rome_iv_infant_diarrhea

Markdown: /docs/rome-iv-infant-diarrhea.md · Canonical: https://magentlab.com/docs/rome-iv-infant-diarrhea

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

What it computes

Apply the Benninga 2016 Rome IV G5 Functional Diarrhea diagnostic criteria and return whether the published infant functional diarrhea box holds (rome_iv_infant_diarrhea).

When to use

When an agent already has the four caller-assigned Benninga 2016 Rome IV G5 flags and needs whether the published infant functional diarrhea box holds. magent does not examine the child.

When not to use

Not a medical device.
Not a diagnosis. magent does not diagnose infant functional diarrhea.
The caller assigns the four flags, including onset_between_6_and_60_months. magent does not examine the child.
Rome IV G5 requires 4 or more stools per day (not 3; Rome III used 3). The sleep-stool criterion was dropped in Rome IV and is not a flag.
This tool is Benninga 2016 Rome IV G5 Functional Diarrhea only. Not adult Rome IV functional diarrhea (Mearin 2016 C3). Not a malabsorption workup.

Formula

rome_iv_infant_diarrhea iff daily_painless_recurrent_4_or_more_large_unformed_stools and symptoms_last_more_than_4_weeks and onset_between_6_and_60_months and no_failure_to_thrive_if_caloric_intake_adequate (Benninga 2016 Rome IV G5 Functional Diarrhea)

Citation

Title: Childhood Functional Gastrointestinal Disorders: Neonate/Toddler
Authors: Benninga MA, Faure C, Hyman PE, St James Roberts I, Schechter NL, Nurko S
Source: Gastroenterology. 2016;150(6):1443-1455
DOI: 10.1053/j.gastro.2016.02.016

Worked example

All four required flags

Given: daily_painless_recurrent_4_or_more_large_unformed_stools=trueno_failure_to_thrive_if_caloric_intake_adequate=trueonset_between_6_and_60_months=truesymptoms_last_more_than_4_weeks=true

Daily painless recurrent 4 or more large unformed stools is true
Symptoms last more than 4 weeks is true
Onset between 6 and 60 months is true
No failure to thrive if caloric intake is adequate is true
rome_iv_infant_diarrhea is true

Stools, duration, and no FTT without onset between 6 and 60 months

Given: daily_painless_recurrent_4_or_more_large_unformed_stools=trueno_failure_to_thrive_if_caloric_intake_adequate=trueonset_between_6_and_60_months=falsesymptoms_last_more_than_4_weeks=true

Daily painless recurrent 4 or more large unformed stools is true
Symptoms last more than 4 weeks is true
Onset between 6 and 60 months is false
No failure to thrive if caloric intake is adequate is true
rome_iv_infant_diarrhea is false

Also searched as

Rome IV infant diarrhea
Benninga 2016 infant diarrhea
Rome IV G5
infant functional diarrhea
neonate toddler diarrhea
Rome IV G5 functional diarrhea
toddler functional diarrhea
Rome IV childhood diarrhea

Try

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

/api/calc/rome_iv_infant_diarrhea?daily_painless_recurrent_4_or_more_large_unformed_stools=true&symptoms_last_more_than_4_weeks=true&onset_between_6_and_60_months=true&no_failure_to_thrive_if_caloric_intake_adequate=true

Full URL: https://api.magentlab.com/api/calc/rome_iv_infant_diarrhea?daily_painless_recurrent_4_or_more_large_unformed_stools=true&symptoms_last_more_than_4_weeks=true&onset_between_6_and_60_months=true&no_failure_to_thrive_if_caloric_intake_adequate=true

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/rome_iv_infant_diarrhea?daily_painless_recurrent_4_or_more_large_unformed_stools=true&symptoms_last_more_than_4_weeks=true&onset_between_6_and_60_months=true&no_failure_to_thrive_if_caloric_intake_adequate=true"

Parameters

Name	Type	Required	Description
`daily_painless_recurrent_4_or_more_large_unformed_stools`	boolean	required	Daily, painless, recurrent passage of 4 or more large, unformed stools, as assigned (Benninga 2016 Rome IV G5; Rome IV is 4 or more, not Rome III's 3). true or false as assigned by the caller. magent does not examine the child.
`symptoms_last_more_than_4_weeks`	boolean	required	Symptoms last more than 4 weeks, as assigned (Benninga 2016 Rome IV G5). true or false as assigned by the caller. magent does not examine the child.
`onset_between_6_and_60_months`	boolean	required	Onset between 6 and 60 months of age, as assigned (Benninga 2016 Rome IV G5). true or false as assigned by the caller. magent does not examine the child.
`no_failure_to_thrive_if_caloric_intake_adequate`	boolean	required	No failure to thrive if caloric intake is adequate, as assigned (Benninga 2016 Rome IV G5). true or false as assigned by the caller. magent does not examine the child.

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/rome_iv_infant_diarrhea 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": [
    {
      "daily_painless_recurrent_4_or_more_large_unformed_stools": "true",
      "no_failure_to_thrive_if_caloric_intake_adequate": "true",
      "onset_between_6_and_60_months": "true",
      "symptoms_last_more_than_4_weeks": "true"
    },
    {
      "daily_painless_recurrent_4_or_more_large_unformed_stools": "true",
      "no_failure_to_thrive_if_caloric_intake_adequate": "true",
      "onset_between_6_and_60_months": "true",
      "symptoms_last_more_than_4_weeks": "true"
    }
  ]
}

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/rome_iv_infant_diarrhea",
  "items": [
    {
      "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": "Benninga MA, Faure C, Hyman PE, St James Roberts I, Schechter NL, Nurko S",
        "doi": "10.1053/j.gastro.2016.02.016",
        "id": "benninga-2016",
        "pmid": "27144631",
        "source": "Gastroenterology. 2016;150(6):1443-1455",
        "title": "Childhood Functional Gastrointestinal Disorders: Neonate/Toddler"
      },
      "formula": "rome_iv_infant_diarrhea",
      "formula_expression": "rome_iv_infant_diarrhea iff daily_painless_recurrent_4_or_more_large_unformed_stools and symptoms_last_more_than_4_weeks and onset_between_6_and_60_months and no_failure_to_thrive_if_caloric_intake_adequate (Benninga 2016 Rome IV G5 Functional Diarrhea)",
      "criteria": [
        {
          "factor": "daily_painless_recurrent_4_or_more_large_unformed_stools",
          "met": true
        },
        {
          "factor": "symptoms_last_more_than_4_weeks",
          "met": true
        },
        {
          "factor": "onset_between_6_and_60_months",
          "met": true
        },
        {
          "factor": "no_failure_to_thrive_if_caloric_intake_adequate",
          "met": true
        }
      ],
      "rome_iv_infant_diarrhea": true
    },
    {
      "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": "Benninga MA, Faure C, Hyman PE, St James Roberts I, Schechter NL, Nurko S",
        "doi": "10.1053/j.gastro.2016.02.016",
        "id": "benninga-2016",
        "pmid": "27144631",
        "source": "Gastroenterology. 2016;150(6):1443-1455",
        "title": "Childhood Functional Gastrointestinal Disorders: Neonate/Toddler"
      },
      "formula": "rome_iv_infant_diarrhea",
      "formula_expression": "rome_iv_infant_diarrhea iff daily_painless_recurrent_4_or_more_large_unformed_stools and symptoms_last_more_than_4_weeks and onset_between_6_and_60_months and no_failure_to_thrive_if_caloric_intake_adequate (Benninga 2016 Rome IV G5 Functional Diarrhea)",
      "criteria": [
        {
          "factor": "daily_painless_recurrent_4_or_more_large_unformed_stools",
          "met": true
        },
        {
          "factor": "symptoms_last_more_than_4_weeks",
          "met": true
        },
        {
          "factor": "onset_between_6_and_60_months",
          "met": true
        },
        {
          "factor": "no_failure_to_thrive_if_caloric_intake_adequate",
          "met": true
        }
      ],
      "rome_iv_infant_diarrhea": true
    }
  ]
}

Response

Field	Type	Description
`formula`	string	rome_iv_infant_diarrhea
`formula_expression`	string	Benninga 2016 Rome IV G5 Functional Diarrhea: daily painless recurrent 4 or more large unformed stools, symptoms last more than 4 weeks, onset between 6 and 60 months, and no failure to thrive if caloric intake is adequate
`rome_iv_infant_diarrhea`	boolean	true only when all four required flags hold. Not a diagnosis.
`criteria`	array	Per-factor rows with factor and met for the four required flags
`citation`	object	Benninga 2016 Gastroenterology citation
`disclaimer`	string	Not-a-device notice

Example JSON

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

{
  "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": "Benninga MA, Faure C, Hyman PE, St James Roberts I, Schechter NL, Nurko S",
    "doi": "10.1053/j.gastro.2016.02.016",
    "id": "benninga-2016",
    "pmid": "27144631",
    "source": "Gastroenterology. 2016;150(6):1443-1455",
    "title": "Childhood Functional Gastrointestinal Disorders: Neonate/Toddler"
  },
  "formula": "rome_iv_infant_diarrhea",
  "formula_expression": "rome_iv_infant_diarrhea iff daily_painless_recurrent_4_or_more_large_unformed_stools and symptoms_last_more_than_4_weeks and onset_between_6_and_60_months and no_failure_to_thrive_if_caloric_intake_adequate (Benninga 2016 Rome IV G5 Functional Diarrhea)",
  "criteria": [
    {
      "factor": "daily_painless_recurrent_4_or_more_large_unformed_stools",
      "met": true
    },
    {
      "factor": "symptoms_last_more_than_4_weeks",
      "met": true
    },
    {
      "factor": "onset_between_6_and_60_months",
      "met": true
    },
    {
      "factor": "no_failure_to_thrive_if_caloric_intake_adequate",
      "met": true
    }
  ],
  "rome_iv_infant_diarrhea": true
}

Client errors (HTTP 400)

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

HTTP	Code	When
400	`invalid_rome_iv_infant_diarrhea`	Rome IV infant functional diarrhea needs the Benninga 2016 neonate/toddler G5 flags. 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

Rome IV Infant Constipation — Apply the Benninga 2016 Rome IV G7 functional constipation (neonate/toddler) criteria and return features_met and whether the published infant constipation box holds (rome_iv_infant_constipation).
Rome IV Diarrhea — Apply the Mearin 2016 Rome IV C3 functional diarrhea criteria and return whether the published C3 box holds (rome_iv_diarrhea).

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.