{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=No+intervention%2C+this+is+an+observational+study&page=4",
    "query": {
      "intervention": "No intervention, this is an observational study",
      "page": 4
    },
    "page_size": 10
  },
  "pagination": {
    "page": 4,
    "page_size": 10,
    "total_count": 189,
    "total_pages": 19,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=No+intervention%2C+this+is+an+observational+study&page=5&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=No+intervention%2C+this+is+an+observational+study&page=3&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-07T05:10:38.193Z",
  "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": "NCT02027727",
      "title": "Individualized Infiximab Dosing-Proof of Concept Study",
      "overall_status": "UNKNOWN",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Inflammatory Bowel Diseases"
      ],
      "interventions": [
        {
          "name": "No Intervention",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Cedars-Sinai Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "6 Years",
        "maximum_age": "23 Years",
        "sex": "ALL",
        "summary": "6 Years to 23 Years"
      },
      "enrollment_count": 56,
      "start_date": "2013-11",
      "completion_date": "2018-03",
      "has_results": false,
      "last_update_posted_date": "2017-07-19",
      "last_synced_at": "2026-10-07T05:10:38.193Z",
      "location_count": 1,
      "location_summary": "Los Angeles, California",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02027727"
    },
    {
      "nct_id": "NCT01653392",
      "title": "BioThrax® (Anthrax) Vaccine in Pregnancy Registry",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Pregnancy Complications",
        "Pregnancy Outcome",
        "Congenital Abnormalities"
      ],
      "interventions": [
        {
          "name": "Observational Intervention",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Emergent BioSolutions",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "Female only"
      },
      "enrollment_count": 98,
      "start_date": "2012-07",
      "completion_date": "2020-02",
      "has_results": false,
      "last_update_posted_date": "2024-03-15",
      "last_synced_at": "2026-10-07T05:10:38.193Z",
      "location_count": 1,
      "location_summary": "San Diego, California",
      "locations": [
        {
          "city": "San Diego",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01653392"
    },
    {
      "nct_id": "NCT04054232",
      "title": "Evaluation of an Electronic Health Record-based Screening Tool for Peripheral Artery Disease",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Peripheral Artery Disease",
        "Peripheral Vascular Disease"
      ],
      "interventions": [
        {
          "name": "High PAD risk Alert",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Stanford University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "50 Years",
        "maximum_age": "85 Years",
        "sex": "ALL",
        "summary": "50 Years to 85 Years"
      },
      "enrollment_count": 50,
      "start_date": "2023-12",
      "completion_date": "2024-06",
      "has_results": false,
      "last_update_posted_date": "2022-07-12",
      "last_synced_at": "2026-10-07T05:10:38.193Z",
      "location_count": 1,
      "location_summary": "Palo Alto, California",
      "locations": [
        {
          "city": "Palo Alto",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04054232"
    },
    {
      "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": "2026-10-07T05:10:38.193Z",
      "location_count": 1,
      "location_summary": "Baltimore, Maryland",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04782297"
    },
    {
      "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": "2026-10-07T05:10:38.193Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05084417"
    },
    {
      "nct_id": "NCT01135706",
      "title": "Fractal Analysis of the Pulmonary Arterial Tree in Pulmonary Hypertension",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Pulmonary Hypertension"
      ],
      "interventions": [
        {
          "name": "No Intervention",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Ohio State University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 6,
      "start_date": "2010-04",
      "completion_date": "2012-02",
      "has_results": false,
      "last_update_posted_date": "2012-11-01",
      "last_synced_at": "2026-10-07T05:10:38.193Z",
      "location_count": 1,
      "location_summary": "Columbus, Ohio",
      "locations": [
        {
          "city": "Columbus",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01135706"
    },
    {
      "nct_id": "NCT04398862",
      "title": "Pulmonary Health in Children With Down Syndrome",
      "overall_status": "UNKNOWN",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Down Syndrome",
        "Dysphagia, Oropharyngeal"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "University of Colorado, Denver",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "3 Years",
        "maximum_age": "18 Years",
        "sex": "ALL",
        "summary": "3 Years to 18 Years"
      },
      "enrollment_count": 75,
      "start_date": "2020-08-21",
      "completion_date": "2024-12-30",
      "has_results": false,
      "last_update_posted_date": "2024-01-26",
      "last_synced_at": "2026-10-07T05:10:38.193Z",
      "location_count": 1,
      "location_summary": "Aurora, Colorado",
      "locations": [
        {
          "city": "Aurora",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04398862"
    },
    {
      "nct_id": "NCT04349956",
      "title": "Long-Term Follow-Up Study of Patients With Osteoarthritis of the Knee Treated With UBX0101 or Placebo",
      "overall_status": "TERMINATED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Knee Osteoarthritis"
      ],
      "interventions": [
        {
          "name": "UBX0101 or placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Unity Biotechnology, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "40 Years",
        "maximum_age": "85 Years",
        "sex": "ALL",
        "summary": "40 Years to 85 Years"
      },
      "enrollment_count": 161,
      "start_date": "2020-04-20",
      "completion_date": "2020-11-02",
      "has_results": false,
      "last_update_posted_date": "2020-11-17",
      "last_synced_at": "2026-10-07T05:10:38.193Z",
      "location_count": 17,
      "location_summary": "Mobile, Alabama • Tempe, Arizona • Tucson, Arizona + 14 more",
      "locations": [
        {
          "city": "Mobile",
          "state": "Alabama"
        },
        {
          "city": "Tempe",
          "state": "Arizona"
        },
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "La Mesa",
          "state": "California"
        },
        {
          "city": "Walnut Creek",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04349956"
    },
    {
      "nct_id": "NCT00210639",
      "title": "A Study of Incidence of Musculoskeletal Disorders in Children Who Have Received Levofloxacin or a Standard Non-Fluoroquinolone Therapy for Acute Bacterial Infection",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Musculoskeletal Diseases"
      ],
      "interventions": [
        {
          "name": "No intervention",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Johnson & Johnson Pharmaceutical Research & Development, L.L.C.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "6 Months",
        "maximum_age": "16 Years",
        "sex": "ALL",
        "summary": "6 Months to 16 Years"
      },
      "enrollment_count": 2233,
      "start_date": "2002-08",
      "completion_date": "2010-05",
      "has_results": true,
      "last_update_posted_date": "2014-04-21",
      "last_synced_at": "2026-10-07T05:10:38.193Z",
      "location_count": 47,
      "location_summary": "Hoover, Alabama • Mobile, Alabama • Phoenix, Arizona + 44 more",
      "locations": [
        {
          "city": "Hoover",
          "state": "Alabama"
        },
        {
          "city": "Mobile",
          "state": "Alabama"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "Madera",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00210639"
    },
    {
      "nct_id": "NCT01425385",
      "title": "Autoregulation Assessment During Liver Transplantation",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Liver Failure",
        "Liver Transplantation",
        "Encephalopathy"
      ],
      "interventions": [
        {
          "name": "Near infrared spectroscopy monitoring",
          "type": "OTHER"
        },
        {
          "name": "Autoregulation monitoring",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Johns Hopkins University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 10,
      "start_date": "2011-09",
      "completion_date": "2012-09",
      "has_results": false,
      "last_update_posted_date": "2017-08-22",
      "last_synced_at": "2026-10-07T05:10:38.193Z",
      "location_count": 1,
      "location_summary": "Baltimore, Maryland",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01425385"
    }
  ]
}