{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=No+intervention+-+observational+study&page=3",
    "query": {
      "intervention": "No intervention - observational study",
      "page": 3
    },
    "page_size": 10
  },
  "pagination": {
    "page": 3,
    "page_size": 10,
    "total_count": 647,
    "total_pages": 65,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=No+intervention+-+observational+study&page=4&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=No+intervention+-+observational+study&page=2&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-10T00:30:48.719Z",
  "attribution": "Data derived from public ClinicalTrials.gov records. The official record at https://clinicaltrials.gov/ remains the source of truth for current availability, contacts, and full study details.",
  "notes": [
    "This endpoint exposes only public summary fields — no participant contact emails, phone numbers, or scraped investigator contact details.",
    "For contact information and full protocol detail, follow each trial's `official_url` to the ClinicalTrials.gov record.",
    "This API is a navigational aid. It does not provide medical advice, eligibility determinations, or compensation guarantees."
  ],
  "trials": [
    {
      "nct_id": "NCT03313245",
      "title": "Diet Quality and Cognitive Control Function in Early Childhood: A Pilot Study",
      "overall_status": "UNKNOWN",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Diet Habit",
        "Cognitive Function"
      ],
      "interventions": [
        {
          "name": "No Intervention/Observational Study",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Illinois at Urbana-Champaign",
      "sponsor_class": "OTHER",
      "healthy_volunteers": null,
      "eligibility": {
        "minimum_age": "4 Years",
        "maximum_age": "5 Years",
        "sex": "ALL",
        "summary": "4 Years to 5 Years"
      },
      "enrollment_count": 104,
      "start_date": "2016-08-01",
      "completion_date": "2018-12-31",
      "has_results": false,
      "last_update_posted_date": "2018-10-10",
      "last_synced_at": "2026-10-10T00:30:48.719Z",
      "location_count": 1,
      "location_summary": "Urbana, Illinois",
      "locations": [
        {
          "city": "Urbana",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03313245"
    },
    {
      "nct_id": "NCT00759174",
      "title": "A Study to Assess Whether PDE5 Inhibitors Increase the Chance of Triggering the Onset of Acute NAION",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Optic Neuropathy, Ischemic"
      ],
      "interventions": [
        {
          "name": "No intervention",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Pfizer's Upjohn has merged with Mylan to form Viatris Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "45 Years",
        "maximum_age": null,
        "sex": "MALE",
        "summary": "45 Years and older · Male only"
      },
      "enrollment_count": 673,
      "start_date": "2008-11",
      "completion_date": "2012-10",
      "has_results": true,
      "last_update_posted_date": "2021-02-01",
      "last_synced_at": "2026-10-10T00:30:48.719Z",
      "location_count": 69,
      "location_summary": "Birmingham, Alabama • Mobile, Alabama • Anchorage, Alaska + 57 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Mobile",
          "state": "Alabama"
        },
        {
          "city": "Anchorage",
          "state": "Alaska"
        },
        {
          "city": "Little Rock",
          "state": "Arkansas"
        },
        {
          "city": "Little Rock",
          "state": "Arkansas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00759174"
    },
    {
      "nct_id": "NCT01867905",
      "title": "Antibiotic Administration and Blood Culture Positivity in Severe Sepsis and Septic Shock",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Severe Sepsis",
        "Septic Shock",
        "Bacteremia"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "University of British Columbia",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 330,
      "start_date": "2014-03-01",
      "completion_date": "2019-04-10",
      "has_results": false,
      "last_update_posted_date": "2019-04-16",
      "last_synced_at": "2026-10-10T00:30:48.719Z",
      "location_count": 1,
      "location_summary": "Phoenix, Arizona",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01867905"
    },
    {
      "nct_id": "NCT03589456",
      "title": "Establishment of a PDT Patient Registry",
      "overall_status": "TERMINATED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Lung Cancer"
      ],
      "interventions": [
        {
          "name": "No intervention",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Concordia Laboratories Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": null,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 22,
      "start_date": "2019-01-18",
      "completion_date": "2020-01-15",
      "has_results": false,
      "last_update_posted_date": "2020-02-24",
      "last_synced_at": "2026-10-10T00:30:48.719Z",
      "location_count": 10,
      "location_summary": "Concord, California • Los Angeles, California • Gainesville, Florida + 7 more",
      "locations": [
        {
          "city": "Concord",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Gainesville",
          "state": "Florida"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        },
        {
          "city": "Lisle",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03589456"
    },
    {
      "nct_id": "NCT06351579",
      "title": "Data Collection Post Radical Prostatectomy",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Stress Urinary Incontinence",
        "Radical Prostatectomy",
        "BPH"
      ],
      "interventions": [
        {
          "name": "Control",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Levee Medical, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "45 Years",
        "maximum_age": "70 Years",
        "sex": "MALE",
        "summary": "45 Years to 70 Years · Male only"
      },
      "enrollment_count": 30,
      "start_date": "2023-03-30",
      "completion_date": "2025-07-30",
      "has_results": false,
      "last_update_posted_date": "2025-09-29",
      "last_synced_at": "2026-10-10T00:30:48.719Z",
      "location_count": 1,
      "location_summary": "Durham, North Carolina",
      "locations": [
        {
          "city": "Durham",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06351579"
    },
    {
      "nct_id": "NCT06812975",
      "title": "Paceport Swan-Ganz Data Collection Study",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "RV Dysfunction"
      ],
      "interventions": [
        {
          "name": "No intervention",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Minnesota",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 152,
      "start_date": "2021-09-18",
      "completion_date": "2025-07-08",
      "has_results": false,
      "last_update_posted_date": "2025-08-01",
      "last_synced_at": "2026-10-10T00:30:48.719Z",
      "location_count": 1,
      "location_summary": "Minneapolis, Minnesota",
      "locations": [
        {
          "city": "Minneapolis",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06812975"
    },
    {
      "nct_id": "NCT03885830",
      "title": "Precision Dosing of Tyrosine Kinase Inhibitors in CML Patients",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "CML, Chronic Phase",
        "CML (Chronic Myelogenous Leukemia",
        "CML - Philadelphia Chromosome",
        "Chronic Myeloid Leukemia",
        "Chronic Myeloid Leukemia, Chronic Phase"
      ],
      "interventions": [
        {
          "name": "Bosutinib",
          "type": "DRUG"
        },
        {
          "name": "Dasatinib",
          "type": "DRUG"
        },
        {
          "name": "Imatinib",
          "type": "DRUG"
        },
        {
          "name": "Nilotinib",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "UNC Lineberger Comprehensive Cancer Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 45,
      "start_date": "2019-06-20",
      "completion_date": "2022-06-15",
      "has_results": false,
      "last_update_posted_date": "2023-01-11",
      "last_synced_at": "2026-10-10T00:30:48.719Z",
      "location_count": 1,
      "location_summary": "Chapel Hill, North Carolina",
      "locations": [
        {
          "city": "Chapel Hill",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03885830"
    },
    {
      "nct_id": "NCT01419067",
      "title": "A Phase II Trial of Limited Surgery and Proton Therapy for Craniopharyngioma or Observation After Radical Resection",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Craniopharyngioma"
      ],
      "interventions": [
        {
          "name": "Radical Surgery or Limited Surgery",
          "type": "PROCEDURE"
        },
        {
          "name": "Proton Therapy",
          "type": "DEVICE"
        },
        {
          "name": "^1^8F-fluorodeoxyglucose",
          "type": "DRUG"
        },
        {
          "name": "^1^1C-methionine",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "PROCEDURE",
        "DEVICE",
        "DRUG"
      ],
      "sponsor": "St. Jude Children's Research Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": "21 Years",
        "sex": "ALL",
        "summary": "Up to 21 Years"
      },
      "enrollment_count": 112,
      "start_date": "2011-08-22",
      "completion_date": "2031-06",
      "has_results": false,
      "last_update_posted_date": "2026-08-19",
      "last_synced_at": "2026-10-10T00:30:48.719Z",
      "location_count": 2,
      "location_summary": "Jacksonville, Florida • Memphis, Tennessee",
      "locations": [
        {
          "city": "Jacksonville",
          "state": "Florida"
        },
        {
          "city": "Memphis",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01419067"
    },
    {
      "nct_id": "NCT07080749",
      "title": "The Effect of Vagus Nerve Stimulation on Pain and Functional Activities in Individuals With Chronic Widespread Pain",
      "overall_status": "NOT_YET_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Widspread Chronic Pain, Fibromyalgia"
      ],
      "interventions": [
        {
          "name": "Vagal nerve stimulation through deep exhalation exercise",
          "type": "OTHER"
        },
        {
          "name": "Vagal nerve stimulation through ear electrical stimulation",
          "type": "OTHER"
        },
        {
          "name": "No intervention (observational study)",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of North Georgia",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 100,
      "start_date": "2025-08-30",
      "completion_date": "2026-08-30",
      "has_results": false,
      "last_update_posted_date": "2025-07-23",
      "last_synced_at": "2026-10-10T00:30:48.719Z",
      "location_count": 1,
      "location_summary": "Dahlonega, Georgia",
      "locations": [
        {
          "city": "Dahlonega",
          "state": "Georgia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07080749"
    },
    {
      "nct_id": "NCT04564378",
      "title": "Association Between Fuchs' Endothelial Corneal Dystrophy Severity and Estrogen Exposure",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Fuchs Dystrophy"
      ],
      "interventions": [
        {
          "name": "This is an observational study. There is no therapeutic intervention.",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "State University of New York at Buffalo",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "55 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "55 Years and older"
      },
      "enrollment_count": 43,
      "start_date": "2018-01-17",
      "completion_date": "2023-09-01",
      "has_results": false,
      "last_update_posted_date": "2024-10-01",
      "last_synced_at": "2026-10-10T00:30:48.719Z",
      "location_count": 1,
      "location_summary": "Buffalo, New York",
      "locations": [
        {
          "city": "Buffalo",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04564378"
    }
  ]
}