{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Observational+study+-+there+is+no+intervention&page=4",
    "query": {
      "intervention": "Observational study - there is no intervention",
      "page": 4
    },
    "page_size": 10
  },
  "pagination": {
    "page": 4,
    "page_size": 10,
    "total_count": 104,
    "total_pages": 11,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Observational+study+-+there+is+no+intervention&page=5&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Observational+study+-+there+is+no+intervention&page=3&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-06T08:30:39.548Z",
  "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": "NCT00957840",
      "title": "Intraventricular Hemorrhage and Post Hemorrhagic Ventricular Dilation: Natural Course, Treatment, and Outcome",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Intraventricular Hemorrhage",
        "Premature Infants"
      ],
      "interventions": [
        {
          "name": "NIRS, aEEG, and CSF concentration of biomarkers",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "University of Utah",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": "1 Year",
        "sex": "ALL",
        "summary": "Up to 1 Year"
      },
      "enrollment_count": 63,
      "start_date": "2009-07",
      "completion_date": "2015-04",
      "has_results": false,
      "last_update_posted_date": "2015-05-06",
      "last_synced_at": "2026-10-06T08:30:39.548Z",
      "location_count": 1,
      "location_summary": "Salt Lake City, Utah",
      "locations": [
        {
          "city": "Salt Lake City",
          "state": "Utah"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00957840"
    },
    {
      "nct_id": "NCT03248310",
      "title": "A Study Comparing Quality of Life in Patients With Lymphedema Who Undergo Surgical Treatment Versus Non-Surgical Management",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Lymphedema"
      ],
      "interventions": [
        {
          "name": "Quality of Life Assessments",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Memorial Sloan Kettering Cancer Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": null,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "18 Years to 80 Years"
      },
      "enrollment_count": 600,
      "start_date": "2017-08-09",
      "completion_date": "2027-08",
      "has_results": false,
      "last_update_posted_date": "2026-09-24",
      "last_synced_at": "2026-10-06T08:30:39.548Z",
      "location_count": 3,
      "location_summary": "Harrison, New York • New York, New York • Rockville Centre, New York",
      "locations": [
        {
          "city": "Harrison",
          "state": "New York"
        },
        {
          "city": "New York",
          "state": "New York"
        },
        {
          "city": "Rockville Centre",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03248310"
    },
    {
      "nct_id": "NCT00005398",
      "title": "University of North Carolina Alumni Heart Study",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Cardiovascular Diseases",
        "Heart Diseases",
        "Coronary Disease",
        "Depression"
      ],
      "interventions": [
        {
          "name": "There is no intervention",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Duke University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 6340,
      "start_date": "1996-05",
      "completion_date": "2030-05",
      "has_results": false,
      "last_update_posted_date": "2026-07-08",
      "last_synced_at": "2026-10-06T08:30:39.548Z",
      "location_count": 1,
      "location_summary": "Durham, North Carolina",
      "locations": [
        {
          "city": "Durham",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00005398"
    },
    {
      "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": "2026-10-06T08:30:39.548Z",
      "location_count": 1,
      "location_summary": "San Francisco, California",
      "locations": [
        {
          "city": "San Francisco",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05619900"
    },
    {
      "nct_id": "NCT05084417",
      "title": "A Prospective, Observational Study of Clinician and Patient-reported Outcomes in Patients With Dermatological Conditions",
      "overall_status": "UNKNOWN",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Atopic Dermatitis",
        "Dermatology",
        "Vitiligo",
        "Alopecia Areata",
        "Hidradenitis Suppurativa",
        "Psoriasis"
      ],
      "interventions": [
        {
          "name": "N/A This is an observational study",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "OM1, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 10000,
      "start_date": "2023-06-09",
      "completion_date": "2026-01-15",
      "has_results": false,
      "last_update_posted_date": "2023-11-01",
      "last_synced_at": "2026-10-06T08:30:39.548Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05084417"
    },
    {
      "nct_id": "NCT02909608",
      "title": "Actigraphy in Pediatric Pulmonary Hypertension",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Pediatric Pulmonary Hypertension"
      ],
      "interventions": [
        {
          "name": "No interventions / observations only",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Colorado, Denver",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "8 Years",
        "maximum_age": "14 Years",
        "sex": "ALL",
        "summary": "8 Years to 14 Years"
      },
      "enrollment_count": 116,
      "start_date": "2016-10-07",
      "completion_date": "2020-04-02",
      "has_results": false,
      "last_update_posted_date": "2021-06-07",
      "last_synced_at": "2026-10-06T08:30:39.548Z",
      "location_count": 2,
      "location_summary": "Aurora, Colorado",
      "locations": [
        {
          "city": "Aurora",
          "state": "Colorado"
        },
        {
          "city": "Aurora",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02909608"
    },
    {
      "nct_id": "NCT01873235",
      "title": "PKD Clinical and Translational Core Study",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Polycystic Kidney Disease"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "University of Maryland, Baltimore",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 350,
      "start_date": "2013-03",
      "completion_date": "2030-06",
      "has_results": false,
      "last_update_posted_date": "2025-09-11",
      "last_synced_at": "2026-10-06T08:30:39.548Z",
      "location_count": 1,
      "location_summary": "Baltimore, Maryland",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01873235"
    },
    {
      "nct_id": "NCT07706140",
      "title": "Observational Data Collection for Blood Hemoglobin Algorithm Validation in Pediatrics",
      "overall_status": "NOT_YET_RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Hemoglobin",
        "Cerebral Oxygenation",
        "Congenital Heart Disease"
      ],
      "interventions": [
        {
          "name": "Noninvasive hemoglobin monitoring",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Boston Children's Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "0 Days",
        "maximum_age": "21 Years",
        "sex": "ALL",
        "summary": "0 Days to 21 Years"
      },
      "enrollment_count": 100,
      "start_date": "2026-08",
      "completion_date": "2027-12",
      "has_results": false,
      "last_update_posted_date": "2026-07-27",
      "last_synced_at": "2026-10-06T08:30:39.548Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07706140"
    },
    {
      "nct_id": "NCT04782297",
      "title": "Long Term Hemodialysis Catheters (LTHD) Post Market Clinical Follow up (PMCF)",
      "overall_status": "WITHDRAWN",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "CKD",
        "ESRD"
      ],
      "interventions": [
        {
          "name": "Long term hemodialysis catheter",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Medical Components, Inc dba MedComp",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 0,
      "start_date": "2022-03-30",
      "completion_date": "2023-03-17",
      "has_results": false,
      "last_update_posted_date": "2024-01-10",
      "last_synced_at": "2026-10-06T08:30:39.548Z",
      "location_count": 1,
      "location_summary": "Baltimore, Maryland",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04782297"
    },
    {
      "nct_id": "NCT04370002",
      "title": "Sensor-based Characterization of Depression",
      "overall_status": "UNKNOWN",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Unipolar Depression"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Massachusetts General Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "18 Years to 75 Years"
      },
      "enrollment_count": 100,
      "start_date": "2020-01-28",
      "completion_date": "2024-11-30",
      "has_results": false,
      "last_update_posted_date": "2023-11-03",
      "last_synced_at": "2026-10-06T08:30:39.548Z",
      "location_count": 2,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04370002"
    }
  ]
}