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Rome IV H1b child functional nausea and vomiting

Rome IV child nausea vomiting

Apply the Hyams 2016 Rome IV H1b child/adolescent functional nausea (H1b1) and functional vomiting (H1b2) diagnostic criteria and return whether each published box holds (rome_iv_child_functional_nausea, rome_iv_child_functional_vomiting).

LIVE $0.005 USDC GET /api/calc/rome_iv_child_nausea_vomiting

Markdown: /docs/rome-iv-child-nausea-vomiting.md · Canonical: https://magentlab.com/docs/rome-iv-child-nausea-vomiting

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

What it computes

When to use

When an agent already has the seven caller-assigned Hyams 2016 Rome IV H1b flags (shared 2-month duration, three functional nausea flags, and three functional vomiting flags) and needs whether each published child H1b box holds. magent does not examine the child.

When not to use

Not a medical device.
Not a diagnosis. magent does not diagnose functional nausea or functional vomiting.
The caller assigns the seven flags. magent does not examine the child.
This tool is Hyams 2016 Rome IV H1b child/adolescent functional nausea (H1b1) and functional vomiting (H1b2) only. Not H1a child cyclic vomiting. Not adult CNVS (Stanghellini 2016 B3a). Not rumination (H1c). Not neonate/toddler.

Formula

rome_iv_child_functional_nausea iff fulfilled_at_least_2_months and bothersome_nausea_twice_weekly_not_meal_related and nausea_not_consistently_associated_with_vomiting and nausea_not_explained_by_another_condition; rome_iv_child_functional_vomiting iff fulfilled_at_least_2_months and vomiting_at_least_weekly and no_self_induced_eating_disorder_or_rumination and vomiting_not_explained_by_another_condition (Hyams 2016 Rome IV H1b Functional Nausea and Functional Vomiting)

Citation

Title: Childhood Functional Gastrointestinal Disorders: Child/Adolescent
Authors: Hyams JS, Di Lorenzo C, Saps M, Shulman RJ, Staiano A, van Tilburg M
Source: Gastroenterology. 2016;150(6):1456-1468
DOI: 10.1053/j.gastro.2016.02.015

Worked example

H1b1 functional nausea with duration; vomiting flags false

Given: bothersome_nausea_twice_weekly_not_meal_related=truefulfilled_at_least_2_months=truenausea_not_consistently_associated_with_vomiting=truenausea_not_explained_by_another_condition=trueno_self_induced_eating_disorder_or_rumination=falsevomiting_at_least_weekly=falsevomiting_not_explained_by_another_condition=false

Fulfilled at least 2 months is true
Bothersome nausea twice weekly and not meal-related is true
Nausea not consistently associated with vomiting is true
Nausea not explained by another condition is true
All three functional vomiting flags are false
rome_iv_child_functional_nausea is true; rome_iv_child_functional_vomiting is false

Nausea flags without 2-month duration

Given: bothersome_nausea_twice_weekly_not_meal_related=truefulfilled_at_least_2_months=falsenausea_not_consistently_associated_with_vomiting=truenausea_not_explained_by_another_condition=trueno_self_induced_eating_disorder_or_rumination=falsevomiting_at_least_weekly=falsevomiting_not_explained_by_another_condition=false

Three H1b1 functional nausea flags hold
Fulfilled at least 2 months is false
rome_iv_child_functional_nausea is false; rome_iv_child_functional_vomiting is false

Also searched as

Rome IV child functional nausea
Rome IV child functional vomiting
Hyams 2016 H1b
child adolescent functional nausea
pediatric functional vomiting Rome IV
Rome IV H1b1 functional nausea
Rome IV H1b2 functional vomiting
functional nausea vomiting child

Try

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

/api/calc/rome_iv_child_nausea_vomiting?fulfilled_at_least_2_months=true&bothersome_nausea_twice_weekly_not_meal_related=true&nausea_not_consistently_associated_with_vomiting=true&nausea_not_explained_by_another_condition=true&vomiting_at_least_weekly=false&no_self_induced_eating_disorder_or_rumination=false&vomiting_not_explained_by_another_condition=false

Full URL: https://api.magentlab.com/api/calc/rome_iv_child_nausea_vomiting?fulfilled_at_least_2_months=true&bothersome_nausea_twice_weekly_not_meal_related=true&nausea_not_consistently_associated_with_vomiting=true&nausea_not_explained_by_another_condition=true&vomiting_at_least_weekly=false&no_self_induced_eating_disorder_or_rumination=false&vomiting_not_explained_by_another_condition=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/rome_iv_child_nausea_vomiting?fulfilled_at_least_2_months=true&bothersome_nausea_twice_weekly_not_meal_related=true&nausea_not_consistently_associated_with_vomiting=true&nausea_not_explained_by_another_condition=true&vomiting_at_least_weekly=false&no_self_induced_eating_disorder_or_rumination=false&vomiting_not_explained_by_another_condition=false"

Parameters

Name	Type	Required	Description
`fulfilled_at_least_2_months`	boolean	required	Criteria fulfilled for at least 2 months before diagnosis, as assigned (Hyams 2016 Rome IV H1b; shared duration for functional nausea and functional vomiting). true or false as assigned by the caller. magent does not take a history.
`bothersome_nausea_twice_weekly_not_meal_related`	boolean	required	Bothersome nausea as the predominant symptom, occurring at least twice per week, and generally not related to meals, as assigned (Hyams 2016 Rome IV H1b1). true or false as assigned by the caller. magent does not examine the child.
`nausea_not_consistently_associated_with_vomiting`	boolean	required	Nausea is not consistently associated with vomiting, as assigned (Hyams 2016 Rome IV H1b1). true or false as assigned by the caller. magent does not examine the child.
`nausea_not_explained_by_another_condition`	boolean	required	After appropriate evaluation, the nausea cannot be fully explained by another medical condition, as assigned (Hyams 2016 Rome IV H1b1). true or false as assigned by the caller. magent does not examine the child.
`vomiting_at_least_weekly`	boolean	required	On average one or more episodes of vomiting per week, as assigned (Hyams 2016 Rome IV H1b2). true or false as assigned by the caller. magent does not examine the child.
`no_self_induced_eating_disorder_or_rumination`	boolean	required	Absence of self-induced vomiting or criteria for an eating disorder or rumination, as assigned (Hyams 2016 Rome IV H1b2). true or false as assigned by the caller. magent does not examine the child.
`vomiting_not_explained_by_another_condition`	boolean	required	After appropriate evaluation, the vomiting cannot be fully explained by another medical condition, as assigned (Hyams 2016 Rome IV H1b2). 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_child_nausea_vomiting 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": [
    {
      "bothersome_nausea_twice_weekly_not_meal_related": "true",
      "fulfilled_at_least_2_months": "true",
      "nausea_not_consistently_associated_with_vomiting": "true",
      "nausea_not_explained_by_another_condition": "true",
      "no_self_induced_eating_disorder_or_rumination": "false",
      "vomiting_at_least_weekly": "false",
      "vomiting_not_explained_by_another_condition": "false"
    },
    {
      "bothersome_nausea_twice_weekly_not_meal_related": "true",
      "fulfilled_at_least_2_months": "true",
      "nausea_not_consistently_associated_with_vomiting": "true",
      "nausea_not_explained_by_another_condition": "true",
      "no_self_induced_eating_disorder_or_rumination": "false",
      "vomiting_at_least_weekly": "false",
      "vomiting_not_explained_by_another_condition": "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/rome_iv_child_nausea_vomiting",
  "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": "Hyams JS, Di Lorenzo C, Saps M, Shulman RJ, Staiano A, van Tilburg M",
        "doi": "10.1053/j.gastro.2016.02.015",
        "id": "hyams-2016",
        "pmid": "27144632",
        "source": "Gastroenterology. 2016;150(6):1456-1468",
        "title": "Childhood Functional Gastrointestinal Disorders: Child/Adolescent"
      },
      "formula": "rome_iv_child_nausea_vomiting",
      "formula_expression": "rome_iv_child_functional_nausea iff fulfilled_at_least_2_months and bothersome_nausea_twice_weekly_not_meal_related and nausea_not_consistently_associated_with_vomiting and nausea_not_explained_by_another_condition; rome_iv_child_functional_vomiting iff fulfilled_at_least_2_months and vomiting_at_least_weekly and no_self_induced_eating_disorder_or_rumination and vomiting_not_explained_by_another_condition (Hyams 2016 Rome IV H1b Functional Nausea and Functional Vomiting)",
      "criteria": [
        {
          "factor": "fulfilled_at_least_2_months",
          "met": true
        },
        {
          "factor": "bothersome_nausea_twice_weekly_not_meal_related",
          "met": true
        },
        {
          "factor": "nausea_not_consistently_associated_with_vomiting",
          "met": true
        },
        {
          "factor": "nausea_not_explained_by_another_condition",
          "met": true
        },
        {
          "factor": "vomiting_at_least_weekly",
          "met": false
        },
        {
          "factor": "no_self_induced_eating_disorder_or_rumination",
          "met": false
        },
        {
          "factor": "vomiting_not_explained_by_another_condition",
          "met": false
        }
      ],
      "rome_iv_child_functional_nausea": true,
      "rome_iv_child_functional_vomiting": 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": "Hyams JS, Di Lorenzo C, Saps M, Shulman RJ, Staiano A, van Tilburg M",
        "doi": "10.1053/j.gastro.2016.02.015",
        "id": "hyams-2016",
        "pmid": "27144632",
        "source": "Gastroenterology. 2016;150(6):1456-1468",
        "title": "Childhood Functional Gastrointestinal Disorders: Child/Adolescent"
      },
      "formula": "rome_iv_child_nausea_vomiting",
      "formula_expression": "rome_iv_child_functional_nausea iff fulfilled_at_least_2_months and bothersome_nausea_twice_weekly_not_meal_related and nausea_not_consistently_associated_with_vomiting and nausea_not_explained_by_another_condition; rome_iv_child_functional_vomiting iff fulfilled_at_least_2_months and vomiting_at_least_weekly and no_self_induced_eating_disorder_or_rumination and vomiting_not_explained_by_another_condition (Hyams 2016 Rome IV H1b Functional Nausea and Functional Vomiting)",
      "criteria": [
        {
          "factor": "fulfilled_at_least_2_months",
          "met": true
        },
        {
          "factor": "bothersome_nausea_twice_weekly_not_meal_related",
          "met": true
        },
        {
          "factor": "nausea_not_consistently_associated_with_vomiting",
          "met": true
        },
        {
          "factor": "nausea_not_explained_by_another_condition",
          "met": true
        },
        {
          "factor": "vomiting_at_least_weekly",
          "met": false
        },
        {
          "factor": "no_self_induced_eating_disorder_or_rumination",
          "met": false
        },
        {
          "factor": "vomiting_not_explained_by_another_condition",
          "met": false
        }
      ],
      "rome_iv_child_functional_nausea": true,
      "rome_iv_child_functional_vomiting": false
    }
  ]
}

Response

Field	Type	Description
`formula`	string	rome_iv_child_nausea_vomiting
`formula_expression`	string	Hyams 2016 Rome IV H1b: functional nausea iff 2-month duration plus three H1b1 flags; functional vomiting iff 2-month duration plus three H1b2 flags; both may be true
`rome_iv_child_functional_nausea`	boolean	true only when duration and the three H1b1 functional nausea flags hold. Not a diagnosis.
`rome_iv_child_functional_vomiting`	boolean	true only when duration and the three H1b2 functional vomiting flags hold. Not a diagnosis.
`criteria`	array	Per-factor rows with factor and met for the shared duration flag and the six H1b1/H1b2 flags
`citation`	object	Hyams 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": "Hyams JS, Di Lorenzo C, Saps M, Shulman RJ, Staiano A, van Tilburg M",
    "doi": "10.1053/j.gastro.2016.02.015",
    "id": "hyams-2016",
    "pmid": "27144632",
    "source": "Gastroenterology. 2016;150(6):1456-1468",
    "title": "Childhood Functional Gastrointestinal Disorders: Child/Adolescent"
  },
  "formula": "rome_iv_child_nausea_vomiting",
  "formula_expression": "rome_iv_child_functional_nausea iff fulfilled_at_least_2_months and bothersome_nausea_twice_weekly_not_meal_related and nausea_not_consistently_associated_with_vomiting and nausea_not_explained_by_another_condition; rome_iv_child_functional_vomiting iff fulfilled_at_least_2_months and vomiting_at_least_weekly and no_self_induced_eating_disorder_or_rumination and vomiting_not_explained_by_another_condition (Hyams 2016 Rome IV H1b Functional Nausea and Functional Vomiting)",
  "criteria": [
    {
      "factor": "fulfilled_at_least_2_months",
      "met": true
    },
    {
      "factor": "bothersome_nausea_twice_weekly_not_meal_related",
      "met": true
    },
    {
      "factor": "nausea_not_consistently_associated_with_vomiting",
      "met": true
    },
    {
      "factor": "nausea_not_explained_by_another_condition",
      "met": true
    },
    {
      "factor": "vomiting_at_least_weekly",
      "met": false
    },
    {
      "factor": "no_self_induced_eating_disorder_or_rumination",
      "met": false
    },
    {
      "factor": "vomiting_not_explained_by_another_condition",
      "met": false
    }
  ],
  "rome_iv_child_functional_nausea": true,
  "rome_iv_child_functional_vomiting": false
}

Client errors (HTTP 400)

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

HTTP	Code	When
400	`invalid_rome_iv_child_nausea_vomiting`	Rome IV child functional nausea/vomiting needs the Hyams 2016 child/adolescent H1b 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 Child CVS — Apply the Hyams 2016 Rome IV H1a child/adolescent cyclic vomiting syndrome diagnostic criteria and return whether the published child CVS box holds (rome_iv_child_cvs).
Rome IV CNVS — Apply the Stanghellini 2016 Rome IV chronic nausea vomiting syndrome (CNVS, B3a) diagnostic criteria and return whether the published CNVS box holds (rome_iv_cnvs).
Rome IV Child Rumination — Apply the Hyams 2016 Rome IV H1c child/adolescent rumination syndrome diagnostic criteria and return whether the published rumination box holds (rome_iv_child_rumination).

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.