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Rome IV H2a child functional dyspepsia

Rome IV child dyspepsia

Apply the Hyams 2016 Rome IV H2a child/adolescent functional dyspepsia diagnostic criteria and return symptoms_met (0-3) and whether the published H2a box holds (rome_iv_child_dyspepsia).

LIVE $0.005 USDC GET /api/calc/rome_iv_child_dyspepsia

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

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

What it computes

Apply the Hyams 2016 Rome IV H2a child/adolescent functional dyspepsia diagnostic criteria and return symptoms_met (0-3) and whether the published H2a box holds (rome_iv_child_dyspepsia).

When to use

When an agent already has the caller-assigned Hyams 2016 Rome IV H2a flags (bothersome at least 4 days per month, the three symptoms, exclusion, and 2-month duration) and needs whether the published child functional dyspepsia box holds. magent does not examine the child or parse EGD.

When not to use

• Not a medical device.
• Not a diagnosis. magent does not diagnose child functional dyspepsia.
• The caller assigns the six flags. magent does not examine the child and does not parse EGD.
• H2a item 4 in the paper box is the exclusion (not_explained_by_another_condition), not a fourth symptom.
• PDS and EPS subtype supportive features in Hyams 2016 H2a (postprandial distress vs epigastric pain syndrome, including bloating, nausea, or belching) are copy-only and are not parsed flags.
• This tool is Hyams 2016 Rome IV H2a child/adolescent functional dyspepsia only. Not adult Rome IV FD (Stanghellini 2016 B1).

Formula

rome_iv_child_dyspepsia iff bothersome_at_least_4_days_per_month and symptoms_met >= 1 and not_explained_by_another_condition and fulfilled_at_least_2_months; symptoms_met counts postprandial_fullness, early_satiation, and epigastric_pain_or_burning_not_associated_with_defecation; H2a item 4 is the exclusion not_explained_by_another_condition, not a fourth symptom; PDS and EPS subtype supportive features are copy-only and are not parsed (Hyams 2016 Rome IV H2a Functional Dyspepsia)

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

Also searched as

• Rome IV child dyspepsia
• Hyams 2016 functional dyspepsia
• Rome IV H2a
• child functional dyspepsia
• pediatric functional dyspepsia
• Hyams H2a dyspepsia
• postprandial fullness child
• early satiation child
• Rome IV child FD

Try

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

/api/calc/rome_iv_child_dyspepsia?bothersome_at_least_4_days_per_month=true&postprandial_fullness=true&early_satiation=false&epigastric_pain_or_burning_not_associated_with_defecation=false&not_explained_by_another_condition=true&fulfilled_at_least_2_months=true

Full URL: https://api.magentlab.com/api/calc/rome_iv_child_dyspepsia?bothersome_at_least_4_days_per_month=true&postprandial_fullness=true&early_satiation=false&epigastric_pain_or_burning_not_associated_with_defecation=false&not_explained_by_another_condition=true&fulfilled_at_least_2_months=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_child_dyspepsia?bothersome_at_least_4_days_per_month=true&postprandial_fullness=true&early_satiation=false&epigastric_pain_or_burning_not_associated_with_defecation=false&not_explained_by_another_condition=true&fulfilled_at_least_2_months=true"

Parameters

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_dyspepsia 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_at_least_4_days_per_month": "true",
      "early_satiation": "false",
      "epigastric_pain_or_burning_not_associated_with_defecation": "false",
      "fulfilled_at_least_2_months": "true",
      "not_explained_by_another_condition": "true",
      "postprandial_fullness": "true"
    },
    {
      "bothersome_at_least_4_days_per_month": "true",
      "early_satiation": "false",
      "epigastric_pain_or_burning_not_associated_with_defecation": "false",
      "fulfilled_at_least_2_months": "true",
      "not_explained_by_another_condition": "true",
      "postprandial_fullness": "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_child_dyspepsia",
  "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_dyspepsia",
      "formula_expression": "rome_iv_child_dyspepsia iff bothersome_at_least_4_days_per_month and symptoms_met >= 1 and not_explained_by_another_condition and fulfilled_at_least_2_months; symptoms_met counts postprandial_fullness, early_satiation, and epigastric_pain_or_burning_not_associated_with_defecation; H2a item 4 is the exclusion not_explained_by_another_condition, not a fourth symptom; PDS and EPS subtype supportive features are copy-only and are not parsed (Hyams 2016 Rome IV H2a Functional Dyspepsia)",
      "criteria": [
        {
          "factor": "bothersome_at_least_4_days_per_month",
          "met": true
        },
        {
          "factor": "postprandial_fullness",
          "met": true
        },
        {
          "factor": "early_satiation",
          "met": false
        },
        {
          "factor": "epigastric_pain_or_burning_not_associated_with_defecation",
          "met": false
        },
        {
          "factor": "not_explained_by_another_condition",
          "met": true
        },
        {
          "factor": "fulfilled_at_least_2_months",
          "met": true
        },
        {
          "value": 1,
          "factor": "symptoms_met_ge_1",
          "met": true
        }
      ],
      "rome_iv_child_dyspepsia": true,
      "symptoms_met": 1
    },
    {
      "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_dyspepsia",
      "formula_expression": "rome_iv_child_dyspepsia iff bothersome_at_least_4_days_per_month and symptoms_met >= 1 and not_explained_by_another_condition and fulfilled_at_least_2_months; symptoms_met counts postprandial_fullness, early_satiation, and epigastric_pain_or_burning_not_associated_with_defecation; H2a item 4 is the exclusion not_explained_by_another_condition, not a fourth symptom; PDS and EPS subtype supportive features are copy-only and are not parsed (Hyams 2016 Rome IV H2a Functional Dyspepsia)",
      "criteria": [
        {
          "factor": "bothersome_at_least_4_days_per_month",
          "met": true
        },
        {
          "factor": "postprandial_fullness",
          "met": true
        },
        {
          "factor": "early_satiation",
          "met": false
        },
        {
          "factor": "epigastric_pain_or_burning_not_associated_with_defecation",
          "met": false
        },
        {
          "factor": "not_explained_by_another_condition",
          "met": true
        },
        {
          "factor": "fulfilled_at_least_2_months",
          "met": true
        },
        {
          "value": 1,
          "factor": "symptoms_met_ge_1",
          "met": true
        }
      ],
      "rome_iv_child_dyspepsia": true,
      "symptoms_met": 1
    }
  ]
}

Response

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_dyspepsia",
  "formula_expression": "rome_iv_child_dyspepsia iff bothersome_at_least_4_days_per_month and symptoms_met >= 1 and not_explained_by_another_condition and fulfilled_at_least_2_months; symptoms_met counts postprandial_fullness, early_satiation, and epigastric_pain_or_burning_not_associated_with_defecation; H2a item 4 is the exclusion not_explained_by_another_condition, not a fourth symptom; PDS and EPS subtype supportive features are copy-only and are not parsed (Hyams 2016 Rome IV H2a Functional Dyspepsia)",
  "criteria": [
    {
      "factor": "bothersome_at_least_4_days_per_month",
      "met": true
    },
    {
      "factor": "postprandial_fullness",
      "met": true
    },
    {
      "factor": "early_satiation",
      "met": false
    },
    {
      "factor": "epigastric_pain_or_burning_not_associated_with_defecation",
      "met": false
    },
    {
      "factor": "not_explained_by_another_condition",
      "met": true
    },
    {
      "factor": "fulfilled_at_least_2_months",
      "met": true
    },
    {
      "value": 1,
      "factor": "symptoms_met_ge_1",
      "met": true
    }
  ],
  "rome_iv_child_dyspepsia": true,
  "symptoms_met": 1
}

Client errors (HTTP 400)

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

Related tools

• Rome IV FD — Apply the Stanghellini 2016 Rome IV B1 functional dyspepsia criteria and return whether PDS (B1a), EPS (B1b), and the published FD box hold (rome_iv_fd).
• Rome IV child IBS — Apply the Hyams 2016 Rome IV H2b child/adolescent IBS diagnostic criteria and return stool_features_met (0-3) and whether the published H2b box holds (rome_iv_child_ibs).

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.