{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Observational+Study",
    "query": {
      "intervention": "Observational Study"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 4334,
    "total_pages": 434,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Observational+Study&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-01T15:41:55.731Z",
  "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": "NCT03346343",
      "title": "Pulmonary Function Using Non-invasive Forced Oscillometry",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Infant, Premature, Diseases",
        "Infant, Newborn, Diseases",
        "Bronchopulmonary Dysplasia",
        "Respiratory Distress Syndrome, Newborn",
        "Meconium Aspiration Syndrome",
        "Transient Tachypnea of the Newborn"
      ],
      "interventions": [
        {
          "name": "Non-invasive forced airway oscillometry",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "University of Alabama at Birmingham",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "1 Day",
        "maximum_age": "2 Years",
        "sex": "ALL",
        "summary": "1 Day to 2 Years"
      },
      "enrollment_count": 600,
      "start_date": "2017-12-06",
      "completion_date": "2027-05",
      "has_results": true,
      "last_update_posted_date": "2026-01-27",
      "last_synced_at": "2026-09-01T15:41:55.731Z",
      "location_count": 1,
      "location_summary": "Birmingham, Alabama",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03346343"
    },
    {
      "nct_id": "NCT03160040",
      "title": "A Retrospective Observational Study to Evaluate the Utilization, Outcomes, and Adverse Events in Participants Treated With Minocin® (Minocycline) for Infections Caused by Gram-negative Bacteria in a Real World Setting",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Gram-Negative Bacterial Infections"
      ],
      "interventions": [
        {
          "name": "Minocycline IV",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Rempex (a wholly owned subsidiary of Melinta Therapeutics, Inc.)",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 71,
      "start_date": "2017-10-11",
      "completion_date": "2018-05-01",
      "has_results": false,
      "last_update_posted_date": "2023-08-28",
      "last_synced_at": "2026-09-01T15:41:55.731Z",
      "location_count": 6,
      "location_summary": "Fort Myers, Florida • Orlando, Florida • Las Vegas, Nevada + 3 more",
      "locations": [
        {
          "city": "Fort Myers",
          "state": "Florida"
        },
        {
          "city": "Orlando",
          "state": "Florida"
        },
        {
          "city": "Las Vegas",
          "state": "Nevada"
        },
        {
          "city": "Brooklyn",
          "state": "New York"
        },
        {
          "city": "Victoria",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03160040"
    },
    {
      "nct_id": "NCT04670874",
      "title": "Quality of Life in Cutaneous Lymphoma Patients Using the Skindex29",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Cutaneous Lymphoma"
      ],
      "interventions": [
        {
          "name": "Quality-of-Life Assessment",
          "type": "OTHER"
        },
        {
          "name": "Questionnaire Administration",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "City of Hope Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 1250,
      "start_date": "2023-08-17",
      "completion_date": "2034-01-24",
      "has_results": false,
      "last_update_posted_date": "2026-01-28",
      "last_synced_at": "2026-09-01T15:41:55.731Z",
      "location_count": 1,
      "location_summary": "Duarte, California",
      "locations": [
        {
          "city": "Duarte",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04670874"
    },
    {
      "nct_id": "NCT04974723",
      "title": "Real-world Effectiveness and Cardiovascular Safety Study of Abaloparatide in Postmenopausal Women",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Osteoporosis, Postmenopausal"
      ],
      "interventions": [
        {
          "name": "Abaloparatide",
          "type": "DRUG"
        },
        {
          "name": "Teriparatide",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Radius Health, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "50 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "50 Years and older · Female only"
      },
      "enrollment_count": 22054,
      "start_date": "2021-07-01",
      "completion_date": "2021-09-30",
      "has_results": true,
      "last_update_posted_date": "2024-04-19",
      "last_synced_at": "2026-09-01T15:41:55.731Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04974723"
    },
    {
      "nct_id": "NCT03934008",
      "title": "Motivational Interviewing and Vaccine Hesitancy in Children",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Vaccine Hesitancy"
      ],
      "interventions": [
        {
          "name": "MOtivational interviewing Tool to Improve Vaccine AdherencE (MOTIVE)",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Cedarville University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "0 Years",
        "maximum_age": "6 Years",
        "sex": "ALL",
        "summary": "0 Years to 6 Years"
      },
      "enrollment_count": 4191,
      "start_date": "2019-04-01",
      "completion_date": "2020-03-09",
      "has_results": false,
      "last_update_posted_date": "2020-09-09",
      "last_synced_at": "2026-09-01T15:41:55.731Z",
      "location_count": 1,
      "location_summary": "Springfield, Ohio",
      "locations": [
        {
          "city": "Springfield",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03934008"
    },
    {
      "nct_id": "NCT07009340",
      "title": "Retrospective Observational Study of Patients Who Have Undergone Coronary Artery Bypass Graft (CABG) and/or Cardiac Valve Surgery",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Post-discharge Outcomes"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Renibus Therapeutics, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 200,
      "start_date": "2023-11-18",
      "completion_date": "2025-06-30",
      "has_results": false,
      "last_update_posted_date": "2025-06-13",
      "last_synced_at": "2026-09-01T15:41:55.731Z",
      "location_count": 4,
      "location_summary": "Huntsville, Alabama • Fort Wayne, Indiana • Midland, Michigan + 1 more",
      "locations": [
        {
          "city": "Huntsville",
          "state": "Alabama"
        },
        {
          "city": "Fort Wayne",
          "state": "Indiana"
        },
        {
          "city": "Midland",
          "state": "Michigan"
        },
        {
          "city": "Dallas",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07009340"
    },
    {
      "nct_id": "NCT06661889",
      "title": "OM2 Low Saturation Verification",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Hypoxia"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Medtronic - MITG",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "39 Years",
        "sex": "ALL",
        "summary": "18 Years to 39 Years"
      },
      "enrollment_count": 28,
      "start_date": "2024-11-18",
      "completion_date": "2025-05-27",
      "has_results": false,
      "last_update_posted_date": "2026-05-14",
      "last_synced_at": "2026-09-01T15:41:55.731Z",
      "location_count": 1,
      "location_summary": "Denver, Colorado",
      "locations": [
        {
          "city": "Denver",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06661889"
    },
    {
      "nct_id": "NCT03076710",
      "title": "Post-Operative Pain Management Following Spine Surgery",
      "overall_status": "WITHDRAWN",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Pain Management",
        "Analgesia",
        "Anesthetic"
      ],
      "interventions": [
        {
          "name": "Opioids delivered through PCA",
          "type": "DRUG"
        },
        {
          "name": "EXPAREL® infiltration",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Miami",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "18 Years to 65 Years"
      },
      "enrollment_count": 0,
      "start_date": "2017-07-31",
      "completion_date": "2022-03",
      "has_results": false,
      "last_update_posted_date": "2020-07-02",
      "last_synced_at": "2026-09-01T15:41:55.731Z",
      "location_count": 1,
      "location_summary": "Miami, Florida",
      "locations": [
        {
          "city": "Miami",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03076710"
    },
    {
      "nct_id": "NCT02167685",
      "title": "The Chimerix CMX001 Registry",
      "overall_status": "TERMINATED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Outcomes",
        "Survival Rates"
      ],
      "interventions": [
        {
          "name": "CMX001",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Jazz Pharmaceuticals",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "6 Months",
        "maximum_age": "100 Years",
        "sex": "ALL",
        "summary": "6 Months to 100 Years"
      },
      "enrollment_count": 550,
      "start_date": "2014-01",
      "completion_date": "2019-05-10",
      "has_results": false,
      "last_update_posted_date": "2019-05-17",
      "last_synced_at": "2026-09-01T15:41:55.731Z",
      "location_count": 47,
      "location_summary": "La Jolla, California • Los Angeles, California • Palo Alto, California + 30 more",
      "locations": [
        {
          "city": "La Jolla",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Palo Alto",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02167685"
    },
    {
      "nct_id": "NCT03778515",
      "title": "Novel Quantitative MRI for Axial Spondyloarthritis",
      "overall_status": "TERMINATED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Spondylitis, Ankylosing"
      ],
      "interventions": [
        {
          "name": "MRI",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "The Cleveland Clinic",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 1,
      "start_date": "2020-01-15",
      "completion_date": "2021-07-31",
      "has_results": false,
      "last_update_posted_date": "2022-08-31",
      "last_synced_at": "2026-09-01T15:41:55.731Z",
      "location_count": 1,
      "location_summary": "San Francisco, California",
      "locations": [
        {
          "city": "San Francisco",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03778515"
    }
  ]
}