Risk score for exacerbations (Bateman)

RSE

Sum Bateman 2015 Table II normalized RSE points from caller-assigned BMI >=30, ACQ-5, FEV1 percent predicted, daily rescue occasions, and GINA treatment step 3 or 4, and return the 0-100 total.

LIVE $0.005 USDC GET /api/calc/rse

Markdown: /docs/rse.md · Canonical: https://magentlab.com/docs/rse

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

What it computes

Sum Bateman 2015 Table II normalized RSE points from caller-assigned BMI >=30, ACQ-5, FEV1 percent predicted, daily rescue occasions, and GINA treatment step 3 or 4, and return the 0-100 total.

When to use

When an agent has caller-assigned Bateman 2015 RSE inputs and needs the published 0-100 point total. magent does not administer ACQ-5 or spirometry and does not change GINA step or order an inhaler.

When not to use

Not a medical device and not a diagnosis of asthma or of an impending exacerbation.
Not a GINA step change or inhaler order. GINA step 3 or 4 is the derivation-population treatment step as assigned by the caller.
magent does not administer ACQ-5 or spirometry. BMI >=30, ACQ-5, FEV1 percent predicted, and daily rescue occasions are caller-assigned.
Table II normalized points only (0-100). The paper plots approximate 6-month exacerbation risk from score 0 to 100; this tool does not emit named low/mid/high strata or a fitted probability.

Formula

RSE = bmi_ge_30 + acq5 + fev1_percent_predicted + rescue_occasions_per_day + gina_step; Bateman 2015 Table II normalized points; BMI >=30 -> 14 else 0; ACQ-5 <1.5 -> 0, 1.5 <= ACQ-5 < 2.5 -> 7, >=2.5 -> 13; FEV1 % predicted >=90 -> 0, 80 <= FEV1 < 90 -> 13, <80 -> 20; rescue occasions/day <2 -> 0, 2 <= x < 4 -> 11, >=4 -> 26; GINA step 3 -> 0, 4 -> 27; max 100

Citation

Title: Development and validation of a novel risk score for asthma exacerbations: The risk score for exacerbations
Authors: Bateman ED, Buhl R, O'Byrne PM, Humbert M, Reddel HK, Sears MR, Jenkins C, Harrison TW, Quirce S, Peterson S, Eriksson G
Source: J Allergy Clin Immunol. 2015;135(6):1457-1464.e4
DOI: 10.1016/j.jaci.2014.08.015

Worked example

All lowest Table II bands (score 0)

Given: acq5=1.0bmi_ge_30=falsefev1_percent_predicted=95gina_step=3rescue_occasions_per_day=0

BMI <30 -> 0; ACQ-5 1.0 (<1.5) -> 0; FEV1 95% (>=90) -> 0; rescue 0/day (<2) -> 0; GINA step 3 -> 0
Score = 0 (max 100)

All Table II maxima (score 100)

Given: acq5=6bmi_ge_30=truefev1_percent_predicted=10gina_step=4rescue_occasions_per_day=30

BMI >=30 -> 14; ACQ-5 6 (>=2.5) -> 13; FEV1 10% (<80) -> 20; rescue 30/day (>=4) -> 26; GINA step 4 -> 27
Score = 100 (max 100)

Also searched as

risk score for exacerbations
RSE asthma
Bateman RSE
asthma exacerbation risk score
Bateman 2015 RSE
RSE score

Try

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

/api/calc/rse?bmi_ge_30=false&acq5=1.0&fev1_percent_predicted=95&rescue_occasions_per_day=0&gina_step=3

Full URL: https://api.magentlab.com/api/calc/rse?bmi_ge_30=false&acq5=1.0&fev1_percent_predicted=95&rescue_occasions_per_day=0&gina_step=3

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/rse?bmi_ge_30=false&acq5=1.0&fev1_percent_predicted=95&rescue_occasions_per_day=0&gina_step=3"

Parameters

Name	Type	Required	Description
`bmi_ge_30`	boolean	required	Caller-assigned BMI >= 30 kg/m2 (Bateman 2015 Table II). true scores 14; false scores 0. magent does not compute BMI.
`acq5`	number	required	Caller-assigned 5-item Asthma Control Questionnaire mean (0-6). Table II: <1.5 scores 0; 1.5 <= ACQ-5 < 2.5 scores 7; >=2.5 scores 13. magent does not administer ACQ-5.
`fev1_percent_predicted`	number	required	Caller-assigned FEV1 as percent of predicted (10-150). Table II: >=90 scores 0; 80 <= FEV1 < 90 scores 13; <80 scores 20. magent does not perform spirometry.
`rescue_occasions_per_day`	number	required	Caller-assigned daily reliever occasions (0-30). Table II: <2 scores 0; 2 <= occasions < 4 scores 11; >=4 scores 26. magent does not count inhaler actuations.
`gina_step`	integer	required	Caller-assigned GINA treatment step in the Bateman 2015 derivation population. Must be 3 (0 points) or 4 (27 points). Other steps are invalid_gina_step. Not a step-change or inhaler order.

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/rse 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": [
    {
      "acq5": "1.0",
      "bmi_ge_30": "false",
      "fev1_percent_predicted": "95",
      "gina_step": "3",
      "rescue_occasions_per_day": "0"
    },
    {
      "acq5": "1.0",
      "bmi_ge_30": "false",
      "fev1_percent_predicted": "95",
      "gina_step": "3",
      "rescue_occasions_per_day": "0"
    }
  ]
}

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/rse",
  "items": [
    {
      "components": [
        {
          "factor": "bmi_ge_30",
          "points": 0,
          "present": false
        },
        {
          "value": 1.0,
          "factor": "acq5",
          "points": 0,
          "present": false
        },
        {
          "value": 95.0,
          "factor": "fev1_percent_predicted",
          "points": 0,
          "present": false
        },
        {
          "value": 0.0,
          "factor": "rescue_occasions_per_day",
          "points": 0,
          "present": false
        },
        {
          "value": 3,
          "factor": "gina_step",
          "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": "Bateman ED, Buhl R, O'Byrne PM, Humbert M, Reddel HK, Sears MR, Jenkins C, Harrison TW, Quirce S, Peterson S, Eriksson G",
        "doi": "10.1016/j.jaci.2014.08.015",
        "id": "bateman-2015",
        "pmid": "25258144",
        "source": "J Allergy Clin Immunol. 2015;135(6):1457-1464.e4",
        "title": "Development and validation of a novel risk score for asthma exacerbations: The risk score for exacerbations"
      },
      "formula": "rse",
      "formula_expression": "RSE = bmi_ge_30 + acq5 + fev1_percent_predicted + rescue_occasions_per_day + gina_step; Bateman 2015 Table II normalized points; BMI >=30 -> 14 else 0; ACQ-5 <1.5 -> 0, 1.5 <= ACQ-5 < 2.5 -> 7, >=2.5 -> 13; FEV1 % predicted >=90 -> 0, 80 <= FEV1 < 90 -> 13, <80 -> 20; rescue occasions/day <2 -> 0, 2 <= x < 4 -> 11, >=4 -> 26; GINA step 3 -> 0, 4 -> 27; max 100",
      "max_score": 100,
      "score": 0,
      "fev1_percent_predicted": 95.0,
      "acq5": 1.0,
      "bmi_ge_30": false,
      "gina_step": 3,
      "rescue_occasions_per_day": 0.0
    },
    {
      "components": [
        {
          "factor": "bmi_ge_30",
          "points": 0,
          "present": false
        },
        {
          "value": 1.0,
          "factor": "acq5",
          "points": 0,
          "present": false
        },
        {
          "value": 95.0,
          "factor": "fev1_percent_predicted",
          "points": 0,
          "present": false
        },
        {
          "value": 0.0,
          "factor": "rescue_occasions_per_day",
          "points": 0,
          "present": false
        },
        {
          "value": 3,
          "factor": "gina_step",
          "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": "Bateman ED, Buhl R, O'Byrne PM, Humbert M, Reddel HK, Sears MR, Jenkins C, Harrison TW, Quirce S, Peterson S, Eriksson G",
        "doi": "10.1016/j.jaci.2014.08.015",
        "id": "bateman-2015",
        "pmid": "25258144",
        "source": "J Allergy Clin Immunol. 2015;135(6):1457-1464.e4",
        "title": "Development and validation of a novel risk score for asthma exacerbations: The risk score for exacerbations"
      },
      "formula": "rse",
      "formula_expression": "RSE = bmi_ge_30 + acq5 + fev1_percent_predicted + rescue_occasions_per_day + gina_step; Bateman 2015 Table II normalized points; BMI >=30 -> 14 else 0; ACQ-5 <1.5 -> 0, 1.5 <= ACQ-5 < 2.5 -> 7, >=2.5 -> 13; FEV1 % predicted >=90 -> 0, 80 <= FEV1 < 90 -> 13, <80 -> 20; rescue occasions/day <2 -> 0, 2 <= x < 4 -> 11, >=4 -> 26; GINA step 3 -> 0, 4 -> 27; max 100",
      "max_score": 100,
      "score": 0,
      "fev1_percent_predicted": 95.0,
      "acq5": 1.0,
      "bmi_ge_30": false,
      "gina_step": 3,
      "rescue_occasions_per_day": 0.0
    }
  ]
}

Response

Field	Type	Description
`formula`	string	rse
`formula_expression`	string	Bateman 2015 Table II normalized RSE expression
`score`	integer	Table II normalized points 0-100. Score only; no invented risk labels.
`max_score`	integer	100
`bmi_ge_30`	boolean	Echo of caller-assigned BMI >= 30 flag
`acq5`	number	Echo of caller-assigned ACQ-5
`fev1_percent_predicted`	number	Echo of caller-assigned FEV1 percent predicted
`rescue_occasions_per_day`	number	Echo of caller-assigned daily rescue occasions
`gina_step`	integer	Echo of caller-assigned GINA step 3 or 4
`components`	array	Per-factor Table II points
`citation`	object	Bateman et al. J Allergy Clin Immunol 2015 citation
`disclaimer`	string	Not-a-device notice

Example JSON

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

{
  "components": [
    {
      "factor": "bmi_ge_30",
      "points": 0,
      "present": false
    },
    {
      "value": 1.0,
      "factor": "acq5",
      "points": 0,
      "present": false
    },
    {
      "value": 95.0,
      "factor": "fev1_percent_predicted",
      "points": 0,
      "present": false
    },
    {
      "value": 0.0,
      "factor": "rescue_occasions_per_day",
      "points": 0,
      "present": false
    },
    {
      "value": 3,
      "factor": "gina_step",
      "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": "Bateman ED, Buhl R, O'Byrne PM, Humbert M, Reddel HK, Sears MR, Jenkins C, Harrison TW, Quirce S, Peterson S, Eriksson G",
    "doi": "10.1016/j.jaci.2014.08.015",
    "id": "bateman-2015",
    "pmid": "25258144",
    "source": "J Allergy Clin Immunol. 2015;135(6):1457-1464.e4",
    "title": "Development and validation of a novel risk score for asthma exacerbations: The risk score for exacerbations"
  },
  "formula": "rse",
  "formula_expression": "RSE = bmi_ge_30 + acq5 + fev1_percent_predicted + rescue_occasions_per_day + gina_step; Bateman 2015 Table II normalized points; BMI >=30 -> 14 else 0; ACQ-5 <1.5 -> 0, 1.5 <= ACQ-5 < 2.5 -> 7, >=2.5 -> 13; FEV1 % predicted >=90 -> 0, 80 <= FEV1 < 90 -> 13, <80 -> 20; rescue occasions/day <2 -> 0, 2 <= x < 4 -> 11, >=4 -> 26; GINA step 3 -> 0, 4 -> 27; max 100",
  "max_score": 100,
  "score": 0,
  "fev1_percent_predicted": 95.0,
  "acq5": 1.0,
  "bmi_ge_30": false,
  "gina_step": 3,
  "rescue_occasions_per_day": 0.0
}

Client errors (HTTP 400)

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

HTTP	Code	When
400	`invalid_acq5`	acq5 must be a number from 0 to 6 (Bateman 2015 RSE 5-item Asthma Control Questionnaire). Returned before settlement; you are not charged.
400	`invalid_rescue_occasions`	rescue_occasions_per_day must be a number from 0 to 30 (Bateman 2015 RSE daily reliever occasions). Returned before settlement; you are not charged.
400	`invalid_gina_step`	gina_step must be 3 or 4 (Bateman 2015 RSE derivation population GINA treatment step). Returned before settlement; you are not charged.
400	`invalid_fev1_percent`	fev1_percent_predicted must be a number from 10 to 150. 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

PASS — Sum three caller-assigned Gorelick 2004 PASS item points and return the published 0-6 total.
Asthma Predictive Index — Apply Castro-Rodriguez 2000 Table 1 and return stringent and loose Asthma Predictive Index flags from caller-assigned early-wheeze class and five major/minor criteria.

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.