Cortexa research tool·clinical·survival

Survival Kaplan Meier

Compute Kaplan-Meier survival estimates from time-to-event data. Returns survival probability at each event time, number at risk, events, censored observations, and median survival time. Supports optional stratification by group for visual comparison. Use for: analyzing patient survival in clinical data, time-to-event analysis, comparing treatment groups.

Livelast probed 2026-05-01 01:00Z· 100msCortexa

Status

The most recent probe succeeded. Safe to call from the agent today.

Last probed: 1d ago
Last success: 1d ago
Last latency: 100ms

Schema

JSON Schema the agent (or your API call) must match.

{
  "properties": {
    "durations": {
      "description": "Observed time durations (e.g., months to event or censoring). All values must be >= 0.",
      "items": {
        "type": "number"
      },
      "type": "array"
    },
    "event_observed": {
      "description": "Event indicator: 1 = event occurred (death/relapse), 0 = censored. Same length as durations.",
      "items": {
        "type": "integer"
      },
      "type": "array"
    },
    "group_labels": {
      "description": "Optional group labels for stratified KM analysis (e.g., ['high', 'low', 'high', ...])",
      "items": {
        "type": "string"
      },
      "type": [
        "array",
        "null"
      ]
    },
    "operation": {
      "description": "Operation type",
      "enum": [
        "kaplan_meier"
      ],
      "type": "string"
    }
  },
  "required": [
    "operation",
    "durations",
    "event_observed"
  ],
  "type": "object"
}

Examples (1)

Default Survival Kaplan Meier call

public-safeinput

{
  "durations": [],
  "event_observed": [],
  "operation": ""
}

Expected response keys: success

Anonymous-safe example. Rate-limited; no sign-in required.

Identifiers

Catalog ID: tu_Survival_kaplan_meier
Tool name: Survival_kaplan_meier
Added: 2026-05-01 00:58Z
Tags: tooluniverse

Survival Kaplan Meier

Livelast probed 2026-05-01 01:00Z· 100msCortexa

Schema

JSON Schema the agent (or your API call) must match.

{ "properties": { "durations": { "description": "Observed time durations (e.g., months to event or censoring). All values must be >= 0.", "items": { "type": "number" }, "type": "array" }, "event_observed": { "description": "Event indicator: 1 = event occurred (death/relapse), 0 = censored. Same length as durations.", "items": { "type": "integer" }, "type": "array" }, "group_labels": { "description": "Optional group labels for stratified KM analysis (e.g., ['high', 'low', 'high', ...])", "items": { "type": "string" }, "type": [ "array", "null" ] }, "operation": { "description": "Operation type", "enum": [ "kaplan_meier" ], "type": "string" } }, "required": [ "operation", "durations", "event_observed" ], "type": "object" }