{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=No+intervention+%28observational+study%29&page=4",
    "query": {
      "intervention": "No intervention (observational study)",
      "page": 4
    },
    "page_size": 10
  },
  "pagination": {
    "page": 4,
    "page_size": 10,
    "total_count": 917,
    "total_pages": 92,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=No+intervention+%28observational+study%29&page=5&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=No+intervention+%28observational+study%29&page=3&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-17T13:31:34.008Z",
  "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": "NCT05704036",
      "title": "Estrogen Supplementation and Bone Health in Women With CF",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Cystic Fibrosis",
        "Hypoestrogenism"
      ],
      "interventions": [
        {
          "name": "Transdermal estrogen",
          "type": "DRUG"
        },
        {
          "name": "Progesterone",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Johns Hopkins University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "0 Years",
        "maximum_age": "100 Years",
        "sex": "FEMALE",
        "summary": "0 Years to 100 Years · Female only"
      },
      "enrollment_count": 75,
      "start_date": "2023-05-02",
      "completion_date": "2027-01",
      "has_results": false,
      "last_update_posted_date": "2025-11-14",
      "last_synced_at": "2026-10-17T13:31:34.008Z",
      "location_count": 1,
      "location_summary": "Baltimore, Maryland",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05704036"
    },
    {
      "nct_id": "NCT00948545",
      "title": "Autonomic Nervous System Function Following Bariatric Surgery",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Bariatric Surgery"
      ],
      "interventions": [
        {
          "name": "Observational study - there is no intervention",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Christiana Care Health Services",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "60 Years",
        "sex": "ALL",
        "summary": "18 Years to 60 Years"
      },
      "enrollment_count": 37,
      "start_date": "2009-07",
      "completion_date": "2012-04",
      "has_results": false,
      "last_update_posted_date": "2012-11-07",
      "last_synced_at": "2026-10-17T13:31:34.008Z",
      "location_count": 1,
      "location_summary": "Newark, Delaware",
      "locations": [
        {
          "city": "Newark",
          "state": "Delaware"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00948545"
    },
    {
      "nct_id": "NCT05273801",
      "title": "Assessing Visual Feedback of HR Monitoring in Rehabilitation - Pilot",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Exercise Therapy",
        "Heart Rate Determination"
      ],
      "interventions": [
        {
          "name": "Heart Rate Recording from Multiple Participants, No Visual Feedback",
          "type": "DEVICE"
        },
        {
          "name": "Visual Feedback of Multiple Participant Heart Rates",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Shirley Ryan AbilityLab",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "90 Years",
        "sex": "ALL",
        "summary": "18 Years to 90 Years"
      },
      "enrollment_count": 18,
      "start_date": "2022-01-28",
      "completion_date": "2022-05-01",
      "has_results": true,
      "last_update_posted_date": "2024-12-02",
      "last_synced_at": "2026-10-17T13:31:34.008Z",
      "location_count": 1,
      "location_summary": "Chicago, Illinois",
      "locations": [
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05273801"
    },
    {
      "nct_id": "NCT04135365",
      "title": "Pediatric Type 1 Diabetes and Neurocognitive Complications Cohort Study",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Type 1 Diabetes"
      ],
      "interventions": [
        {
          "name": "neurocognitive assessment",
          "type": "BEHAVIORAL"
        },
        {
          "name": "neuroimaging assessment",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Vanderbilt University Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "6 Years",
        "maximum_age": "11 Years",
        "sex": "ALL",
        "summary": "6 Years to 11 Years"
      },
      "enrollment_count": 12,
      "start_date": "2021-01-18",
      "completion_date": "2022-10-31",
      "has_results": false,
      "last_update_posted_date": "2022-11-01",
      "last_synced_at": "2026-10-17T13:31:34.008Z",
      "location_count": 1,
      "location_summary": "Nashville, Tennessee",
      "locations": [
        {
          "city": "Nashville",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04135365"
    },
    {
      "nct_id": "NCT05180773",
      "title": "Impact of Bromocriptine on Clinical Outcomes for Peripartum Cardiomyopathy",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Peripartum Cardiomyopathy, Postpartum"
      ],
      "interventions": [
        {
          "name": "Bromocriptine",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        },
        {
          "name": "Guideline Directed Medical Therapy for Heart Failure (GDMT)",
          "type": "DRUG"
        },
        {
          "name": "Rivaroxaban",
          "type": "DRUG"
        },
        {
          "name": "Second Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Dennis M. McNamara, MD, MS",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "18 Years and older · Female only"
      },
      "enrollment_count": 250,
      "start_date": "2022-07-27",
      "completion_date": "2028-12-31",
      "has_results": false,
      "last_update_posted_date": "2026-08-10",
      "last_synced_at": "2026-10-17T13:31:34.008Z",
      "location_count": 64,
      "location_summary": "Birmingham, Alabama • Tucson, Arizona • La Jolla, California + 51 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "La Jolla",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05180773"
    },
    {
      "nct_id": "NCT07009717",
      "title": "Relationship Between Great Toe Strength And Symptoms of Chemotherapy-Induced Peripheral Neuropathy (CIPN)",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Chemotherapy-induced Peripheral Neuropathy (CIPN)",
        "Healthy"
      ],
      "interventions": [
        {
          "name": "No intervention (observational study)",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Florida",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "90 Years",
        "sex": "ALL",
        "summary": "18 Years to 90 Years"
      },
      "enrollment_count": 30,
      "start_date": "2025-08-05",
      "completion_date": "2026-12-31",
      "has_results": false,
      "last_update_posted_date": "2026-02-10",
      "last_synced_at": "2026-10-17T13:31:34.008Z",
      "location_count": 1,
      "location_summary": "Gainesville, Florida",
      "locations": [
        {
          "city": "Gainesville",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07009717"
    },
    {
      "nct_id": "NCT00949819",
      "title": "Active Surveillance for Cancer of the Prostate (ASCaP)",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Prostate Cancer"
      ],
      "interventions": [
        {
          "name": "Active surveillance",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Jonsson Comprehensive Cancer Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "30 Years",
        "maximum_age": "85 Years",
        "sex": "MALE",
        "summary": "30 Years to 85 Years · Male only"
      },
      "enrollment_count": 462,
      "start_date": "2009-07-04",
      "completion_date": "2028-12",
      "has_results": false,
      "last_update_posted_date": "2026-05-26",
      "last_synced_at": "2026-10-17T13:31:34.008Z",
      "location_count": 1,
      "location_summary": "Los Angeles, California",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00949819"
    },
    {
      "nct_id": "NCT02295241",
      "title": "Improving Muscle Assessment in Older Adults - The \"Can We Build a Better Mouse Trap?\" Study",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Sarcopenia"
      ],
      "interventions": [
        {
          "name": "No intervention",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Wisconsin, Madison",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "70 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "70 Years and older"
      },
      "enrollment_count": 112,
      "start_date": "2015-02",
      "completion_date": "2015-10",
      "has_results": false,
      "last_update_posted_date": "2016-03-28",
      "last_synced_at": "2026-10-17T13:31:34.008Z",
      "location_count": 1,
      "location_summary": "Madison, Wisconsin",
      "locations": [
        {
          "city": "Madison",
          "state": "Wisconsin"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02295241"
    },
    {
      "nct_id": "NCT02377102",
      "title": "Does Physical Therapy Prevent Total Knee Arthroplasty in Patients With End Stage Osteoarthritis",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Knee Osteoarthritis"
      ],
      "interventions": [
        {
          "name": "Physical Therapy",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "University of North Carolina, Chapel Hill",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 65,
      "start_date": "2015-02",
      "completion_date": "2017-10",
      "has_results": false,
      "last_update_posted_date": "2017-11-14",
      "last_synced_at": "2026-10-17T13:31:34.008Z",
      "location_count": 1,
      "location_summary": "Chapel Hill, North Carolina",
      "locations": [
        {
          "city": "Chapel Hill",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02377102"
    },
    {
      "nct_id": "NCT05619900",
      "title": "Registry of Patients Diagnosed With Lysosomal Storage Diseases",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Mucopolysaccharidosis I",
        "Mucopolysaccharidosis II",
        "Mucopolysaccharidosis IV A",
        "Mucopolysaccharidosis VI",
        "Mucopolysaccharidosis VII",
        "Pompe Disease Infantile-Onset",
        "Neuronopathic Gaucher Disease",
        "Wolman Disease"
      ],
      "interventions": [
        {
          "name": "There is no intervention",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of California, San Francisco",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": "64 Years",
        "sex": "ALL",
        "summary": "Up to 64 Years"
      },
      "enrollment_count": 250,
      "start_date": "2022-05-31",
      "completion_date": "2050-05-31",
      "has_results": false,
      "last_update_posted_date": "2026-04-08",
      "last_synced_at": "2026-10-17T13:31:34.008Z",
      "location_count": 1,
      "location_summary": "San Francisco, California",
      "locations": [
        {
          "city": "San Francisco",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05619900"
    }
  ]
}