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compute-prr

station__calculate__compute-prr native (always callable) calculate non-pv Constructa Configa

Compute Proportional Reporting Ratio (PRR) for a drug-event pair from a 2x2 contingency table. PRR > 2 with chi-squared > 4 and N >= 3 indicates a signal.

Taxonomy

Linnaean classification joined from the algovigilance taxonomy index via the parent config's rank.

Rank	Value
domain	`Substrata`
kingdom	`Constructa`
phylum	`Configa`
class	`station-config`
order	`calculation`
family	`mcp-tool-config`

Characteristics:

substrate: config
domain: pv
lifecycle: continuous
authority: read
compounding: producer
io: agent-request → tool-response

Input schema

a integerrequired — Drug + event count (cell a of 2x2 table)
b integerrequired — Drug + no-event count (cell b)
c integerrequired — No-drug + event count (cell c)
d integerrequired — No-drug + no-event count (cell d)
table object — Optional alternate form: nest {a,b,c,d} inside a `table` key.

Example call

POST /api/mcp
Content-Type: application/json

{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "station__calculate__compute-prr",
    "arguments": {
      "a": 0,
      "b": 0,
      "c": 0,
      "d": 0
    }
  }
}

How to invoke from a client

From any MCP-aware client, add https://algovigilance.com/api/mcp as an MCP server, then call this tool by name. From a raw HTTP client, send the JSON-RPC body above to /api/mcp.

Agent-friendly formats

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