clinical-trials.use.x402atlas.com

{
  "additionalProperties": false,
  "properties": {
    "as_of": {
      "description": "Retrieval time, UTC",
      "format": "date-time",
      "type": "string"
    },
    "caveat": {
      "description": "Fixed interpretation note",
      "type": "string"
    },
    "condition": {
      "type": "string"
    },
    "count": {
      "description": "Studies on this page",
      "type": "integer"
    },
    "days": {
      "type": "integer"
    },
    "intervention": {
      "description": "Applied filter; empty when none",
      "type": "string"
    },
    "modified": {
      "description": "Always true: fields are normalized, not the registry's verbatim record",
      "type": "boolean"
    },
    "next_page_token": {
      "description": "Pass as page_token for the next page; empty on the last page",
      "type": "string"
    },
    "note": {
      "description": "Present only on an empty window",
      "type": "string"
    },
    "since": {
      "description": "UTC start of the window",
      "format": "date",
      "type": "string"
    },
    "source": {
      "additionalProperties": false,
      "properties": {
        "citation": {
          "description": "Attribution requested by the registry",
          "type": "string"
        },
        "name": {
          "type": "string"
        },
        "url": {
          "type": "string"
        }
      },
      "required": [
        "name",
        "url",
        "citation"
      ],
      "type": "object"
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    "sponsor": {
      "description": "Applied filter; empty when none",
      "type": "string"
    },
    "studies": {
      "description": "Newest update first",
      "items": {
        "additionalProperties": false,
        "properties": {
          "completion_date": {
            "additionalProperties": false,
            "properties": {
              "date": {
                "description": "YYYY, YYYY-MM or YYYY-MM-DD as the registry records it",
                "type": "string"
              },
              "precision": {
                "enum": [
                  "day",
                  "month",
                  "year"
                ],
                "type": "string"
              },
              "type": {
                "description": "Absent when the registry gives none",
                "enum": [
                  "actual",
                  "estimated"
                ],
                "type": "string"
              }
            },
            "required": [
              "date",
              "precision"
            ],
            "type": "object"
          },
          "conditions": {
            "items": {
              "type": "string"
            },
            "type": "array"
          },
          "enrollment": {
            "additionalProperties": false,
            "properties": {
              "count": {
                "type": "integer"
              },
              "type": {
                "enum": [
                  "actual",
                  "estimated"
                ],
                "type": "string"
              }
            },
            "required": [
              "count",
              "type"
            ],
            "type": "object"
          },
          "first_posted": {
            "additionalProperties": false,
            "properties": {
              "date": {
                "description": "YYYY, YYYY-MM or YYYY-MM-DD as the registry records it",
                "type": "string"
              },
              "precision": {
                "enum": [
                  "day",
                  "month",
                  "year"
                ],
                "type": "string"
              },
              "type": {
                "description": "Absent when the registry gives none",
                "enum": [
                  "actual",
                  "estimated"
                ],
                "type": "string"
              }
            },
            "required": [
              "date",
              "precision"
            ],
            "type": "object"
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          "has_results": {
            "description": "true when a results section is posted",
            "type": "boolean"
          },
          "interventions": {
            "items": {
              "additionalProperties": false,
              "properties": {
                "name": {
                  "type": "string"
                },
                "type": {
                  "description": "Lowercase registry type, e.g. drug, biological, device, behavioral",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "name"
              ],
              "type": "object"
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            "type": "array"
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          "last_updated": {
            "additionalProperties": false,
            "properties": {
              "date": {
                "description": "YYYY, YYYY-MM or YYYY-MM-DD as the registry records it",
                "type": "string"
              },
              "precision": {
                "enum": [
                  "day",
                  "month",
                  "year"
                ],
                "type": "string"
              },
              "type": {
                "description": "Absent when the registry gives none",
                "enum": [
                  "actual",
                  "estimated"
                ],
                "type": "string"
              }
            },
            "required": [
              "date",
              "precision"
            ],
            "type": "object"
          },
          "lead_sponsor": {
            "type": "string"
          },
          "nct_id": {
            "type": "string"
          },
          "official_title": {
            "description": "Empty when the registry gives none",
            "type": "string"
          },
          "phases": {
            "description": "early1, 1, 2, 3, 4 or na; empty for observational studies",
            "items": {
              "type": "string"
            },
            "type": "array"
          },
          "primary_completion_date": {
            "additionalProperties": false,
            "properties": {
              "date": {
                "description": "YYYY, YYYY-MM or YYYY-MM-DD as the registry records it",
                "type": "string"
              },
              "precision": {
                "enum": [
                  "day",
                  "month",
                  "year"
                ],
                "type": "string"
              },
              "type": {
                "description": "Absent when the registry gives none",
                "enum": [
                  "actual",
                  "estimated"
                ],
                "type": "string"
              }
            },
            "required": [
              "date",
              "precision"
            ],
            "type": "object"
          },
          "start_date": {
            "additionalProperties": false,
            "properties": {
              "date": {
                "description": "YYYY, YYYY-MM or YYYY-MM-DD as the registry records it",
                "type": "string"
              },
              "precision": {
                "enum": [
                  "day",
                  "month",
                  "year"
                ],
                "type": "string"
              },
              "type": {
                "description": "Absent when the registry gives none",
                "enum": [
                  "actual",
                  "estimated"
                ],
                "type": "string"
              }
            },
            "required": [
              "date",
              "precision"
            ],
            "type": "object"
          },
          "status": {
            "description": "Lowercase registry status, e.g. recruiting, completed, terminated",
            "type": "string"
          },
          "study_type": {
            "description": "interventional, observational or expanded_access",
            "type": "string"
          },
          "title": {
            "description": "Brief title",
            "type": "string"
          },
          "url": {
            "description": "Public record page",
            "type": "string"
          }
        },
        "required": [
          "nct_id",
          "title",
          "official_title",
          "status",
          "study_type",
          "phases",
          "conditions",
          "interventions",
          "lead_sponsor",
          "has_results",
          "url"
        ],
        "type": "object"
      },
      "type": "array"
    },
    "total": {
      "description": "Studies matching across all pages",
      "type": "integer"
    }
  },
  "required": [
    "as_of",
    "source",
    "caveat",
    "modified",
    "condition",
    "intervention",
    "sponsor",
    "days",
    "since",
    "count",
    "total",
    "studies",
    "next_page_token"
  ],
  "type": "object"
}