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PC-PTSD-5 (Prins)

PC-PTSD-5

Apply the Prins 2016 PC-PTSD-5 trauma-exposure gate and sum five caller-assigned past-month yes/no items (max 5). Return whether the score is at or above that paper's optimally sensitive cut of 3.

LIVE $0.005 USDC GET /api/calc/pc_ptsd_5

Markdown: /docs/pc-ptsd-5.md · Canonical: https://magentlab.com/docs/pc-ptsd-5

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

What it computes

Apply the Prins 2016 PC-PTSD-5 trauma-exposure gate and sum five caller-assigned past-month yes/no items (max 5). Return whether the score is at or above that paper's optimally sensitive cut of 3.

When to use

When an agent has already assigned the Prins 2016 lifetime trauma-exposure flag and five past-month symptom flags and needs the published total and ≥3 sensitive screen, not a PTSD diagnosis or an interview.

When not to use

• Not a medical device and not a PTSD diagnosis.
• magent does not interview the patient.
• The caller assigns each flag. magent does not interpret individual items.
• If trauma_exposure is false, the five past-month items are not counted (score is 0) even if they are true; they remain required query parameters.
• This is Prins 2016 PC-PTSD-5 only (lifetime trauma-exposure gate and five past-month items; optimally sensitive screen at score ≥ 3). Cuts of 4 (maximized efficiency) and 5 (maximized specificity) are published in that paper and are not the primary flag. magent does not apply later sex-specific cutoffs. Not the DSM-IV four-item PC-PTSD.

Formula

If trauma_exposure is false, PC-PTSD-5 = 0 (five past-month items are required but not counted). If trauma_exposure is true, PC-PTSD-5 = nightmare_or_intrusion + avoidance + hypervigilance_or_startle + numbing_or_detachment + guilt_or_blame; each 1 if true; max 5; at_or_above_sensitive_cutoff iff score ≥ 3 (Prins 2016 optimally sensitive cut; 4 maximized efficiency; 5 maximized specificity)

Citation

Title

The Primary Care PTSD Screen for DSM-5 (PC-PTSD-5): Development and Evaluation Within a Veteran Primary Care Sample

Authors

Prins A, Bovin MJ, Smolenski DJ, Marx BP, Kimerling R, Jenkins-Guarnieri MA, Kaloupek DG, Schnurr PP, Pless Kaiser A, Leyva YE, Tiet QQ

Source

J Gen Intern Med. 2016;31(10):1206-1211

DOI

10.1007/s11606-016-3703-5

Worked example

Also searched as

• PC-PTSD-5
• Primary Care PTSD Screen for DSM-5
• Prins PC-PTSD-5
• PC-PTSD DSM-5
• primary care PTSD screen
• PC PTSD 5
• Prins 2016 PTSD screen

Try

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

/api/calc/pc_ptsd_5?trauma_exposure=false&nightmare_or_intrusion=false&avoidance=false&hypervigilance_or_startle=false&numbing_or_detachment=false&guilt_or_blame=false

Full URL: https://api.magentlab.com/api/calc/pc_ptsd_5?trauma_exposure=false&nightmare_or_intrusion=false&avoidance=false&hypervigilance_or_startle=false&numbing_or_detachment=false&guilt_or_blame=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/pc_ptsd_5?trauma_exposure=false&nightmare_or_intrusion=false&avoidance=false&hypervigilance_or_startle=false&numbing_or_detachment=false&guilt_or_blame=false"

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/pc_ptsd_5 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": [
    {
      "avoidance": "false",
      "guilt_or_blame": "false",
      "hypervigilance_or_startle": "false",
      "nightmare_or_intrusion": "false",
      "numbing_or_detachment": "false",
      "trauma_exposure": "false"
    },
    {
      "avoidance": "false",
      "guilt_or_blame": "false",
      "hypervigilance_or_startle": "false",
      "nightmare_or_intrusion": "false",
      "numbing_or_detachment": "false",
      "trauma_exposure": "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/pc_ptsd_5",
  "items": [
    {
      "components": [
        {
          "factor": "nightmare_or_intrusion",
          "points": 0,
          "present": false
        },
        {
          "factor": "avoidance",
          "points": 0,
          "present": false
        },
        {
          "factor": "hypervigilance_or_startle",
          "points": 0,
          "present": false
        },
        {
          "factor": "numbing_or_detachment",
          "points": 0,
          "present": false
        },
        {
          "factor": "guilt_or_blame",
          "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": "Prins A, Bovin MJ, Smolenski DJ, Marx BP, Kimerling R, Jenkins-Guarnieri MA, Kaloupek DG, Schnurr PP, Pless Kaiser A, Leyva YE, Tiet QQ",
        "doi": "10.1007/s11606-016-3703-5",
        "id": "prins-2016",
        "pmid": "27170304",
        "source": "J Gen Intern Med. 2016;31(10):1206-1211",
        "title": "The Primary Care PTSD Screen for DSM-5 (PC-PTSD-5): Development and Evaluation Within a Veteran Primary Care Sample"
      },
      "formula": "pc_ptsd_5",
      "formula_expression": "If trauma_exposure is false, PC-PTSD-5 = 0 (five past-month items are required but not counted). If trauma_exposure is true, PC-PTSD-5 = nightmare_or_intrusion + avoidance + hypervigilance_or_startle + numbing_or_detachment + guilt_or_blame; each 1 if true; max 5; at_or_above_sensitive_cutoff iff score ≥ 3 (Prins 2016 optimally sensitive cut; 4 maximized efficiency; 5 maximized specificity)",
      "max_score": 5,
      "score": 0,
      "at_or_above_sensitive_cutoff": false,
      "trauma_exposure": false
    },
    {
      "components": [
        {
          "factor": "nightmare_or_intrusion",
          "points": 0,
          "present": false
        },
        {
          "factor": "avoidance",
          "points": 0,
          "present": false
        },
        {
          "factor": "hypervigilance_or_startle",
          "points": 0,
          "present": false
        },
        {
          "factor": "numbing_or_detachment",
          "points": 0,
          "present": false
        },
        {
          "factor": "guilt_or_blame",
          "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": "Prins A, Bovin MJ, Smolenski DJ, Marx BP, Kimerling R, Jenkins-Guarnieri MA, Kaloupek DG, Schnurr PP, Pless Kaiser A, Leyva YE, Tiet QQ",
        "doi": "10.1007/s11606-016-3703-5",
        "id": "prins-2016",
        "pmid": "27170304",
        "source": "J Gen Intern Med. 2016;31(10):1206-1211",
        "title": "The Primary Care PTSD Screen for DSM-5 (PC-PTSD-5): Development and Evaluation Within a Veteran Primary Care Sample"
      },
      "formula": "pc_ptsd_5",
      "formula_expression": "If trauma_exposure is false, PC-PTSD-5 = 0 (five past-month items are required but not counted). If trauma_exposure is true, PC-PTSD-5 = nightmare_or_intrusion + avoidance + hypervigilance_or_startle + numbing_or_detachment + guilt_or_blame; each 1 if true; max 5; at_or_above_sensitive_cutoff iff score ≥ 3 (Prins 2016 optimally sensitive cut; 4 maximized efficiency; 5 maximized specificity)",
      "max_score": 5,
      "score": 0,
      "at_or_above_sensitive_cutoff": false,
      "trauma_exposure": false
    }
  ]
}

Response

Example JSON

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

{
  "components": [
    {
      "factor": "nightmare_or_intrusion",
      "points": 0,
      "present": false
    },
    {
      "factor": "avoidance",
      "points": 0,
      "present": false
    },
    {
      "factor": "hypervigilance_or_startle",
      "points": 0,
      "present": false
    },
    {
      "factor": "numbing_or_detachment",
      "points": 0,
      "present": false
    },
    {
      "factor": "guilt_or_blame",
      "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": "Prins A, Bovin MJ, Smolenski DJ, Marx BP, Kimerling R, Jenkins-Guarnieri MA, Kaloupek DG, Schnurr PP, Pless Kaiser A, Leyva YE, Tiet QQ",
    "doi": "10.1007/s11606-016-3703-5",
    "id": "prins-2016",
    "pmid": "27170304",
    "source": "J Gen Intern Med. 2016;31(10):1206-1211",
    "title": "The Primary Care PTSD Screen for DSM-5 (PC-PTSD-5): Development and Evaluation Within a Veteran Primary Care Sample"
  },
  "formula": "pc_ptsd_5",
  "formula_expression": "If trauma_exposure is false, PC-PTSD-5 = 0 (five past-month items are required but not counted). If trauma_exposure is true, PC-PTSD-5 = nightmare_or_intrusion + avoidance + hypervigilance_or_startle + numbing_or_detachment + guilt_or_blame; each 1 if true; max 5; at_or_above_sensitive_cutoff iff score ≥ 3 (Prins 2016 optimally sensitive cut; 4 maximized efficiency; 5 maximized specificity)",
  "max_score": 5,
  "score": 0,
  "at_or_above_sensitive_cutoff": false,
  "trauma_exposure": false
}

Client errors (HTTP 400)

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

Related tools

• HARK — Sum the four Sohal 2007 HARK items and return whether one or more answers are affirmative.
• HITS — Sum four caller-assigned Sherin 1998 HITS integers (hurt, insult, threaten, scream; each 1-5) and return the published total (4-20) and ≥10 screen.
• PHQ-9 — Sum nine caller-assigned Kroenke 2001 PHQ-9 integers (0-3) and return the published total (max 27), severity cutpoints, and ≥10 screen.

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.