{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=no+intervention%2C+this+is+a+purely+observational+study",
    "query": {
      "intervention": "no intervention, this is a purely observational study"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 7,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-10-01T13:45:38.438Z",
  "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": "NCT04423770",
      "title": "COVID-19 Related Health and Infection Control Practices Among Dentists",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Severe Acute Respiratory Syndrome Coronavirus 2"
      ],
      "interventions": [
        {
          "name": "No intervention",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "American Dental Association",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 2196,
      "start_date": "2020-06-08",
      "completion_date": "2021-06-08",
      "has_results": false,
      "last_update_posted_date": "2021-07-22",
      "last_synced_at": "2026-10-01T13:45:38.438Z",
      "location_count": 1,
      "location_summary": "Chicago, Illinois",
      "locations": [
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04423770"
    },
    {
      "nct_id": "NCT04379544",
      "title": "Prognostic Value of Point of Care Cardiac and Lung Ultrasound in COVID-19",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Coronavirus",
        "Respiratory Failure"
      ],
      "interventions": [
        {
          "name": "Observation only",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Pennsylvania",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "100 Years",
        "sex": "ALL",
        "summary": "18 Years to 100 Years"
      },
      "enrollment_count": 125,
      "start_date": "2020-04-23",
      "completion_date": "2021-12-01",
      "has_results": false,
      "last_update_posted_date": "2023-09-21",
      "last_synced_at": "2026-10-01T13:45:38.438Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04379544"
    },
    {
      "nct_id": "NCT04937868",
      "title": "Developing a Decision Instrument to Guide Abdominal-pelvic CT Imaging of Blunt Trauma Patients",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Abdominal Injury",
        "Pelvic Fracture",
        "Genital Hemorrhage",
        "Lumbar Spine Injury",
        "Hip Injuries",
        "Liver Injury",
        "Spleen Injury",
        "Renal Injury",
        "Diaphragm Injury",
        "Aortic Rupture",
        "Aortic Dissection",
        "Bowel Disease",
        "Vascular System Injuries",
        "Sacral Fracture"
      ],
      "interventions": [
        {
          "name": "There are no interventions associated with this study",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of California, Los Angeles",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 12000,
      "start_date": "2018-01-15",
      "completion_date": "2027-06-15",
      "has_results": false,
      "last_update_posted_date": "2026-01-13",
      "last_synced_at": "2026-10-01T13:45:38.438Z",
      "location_count": 1,
      "location_summary": "Los Angeles, California",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04937868"
    },
    {
      "nct_id": "NCT02399930",
      "title": "Automated Respiration Rate to Improve Accuracy of the Electronic Cardiac Arrest Risk Triage Score (eCART) Algorithm",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Heart Arrest"
      ],
      "interventions": [
        {
          "name": "Respiratory & Heart Rate Data Collection",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Chicago",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 133,
      "start_date": "2015-04",
      "completion_date": "2016-05",
      "has_results": false,
      "last_update_posted_date": "2016-05-20",
      "last_synced_at": "2026-10-01T13:45:38.438Z",
      "location_count": 1,
      "location_summary": "Chicago, Illinois",
      "locations": [
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02399930"
    },
    {
      "nct_id": "NCT03196245",
      "title": "NK Cell Mediated Influenza Immunity During Pregnancy",
      "overall_status": "TERMINATED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Pregnancy Related",
        "Influenza, Human"
      ],
      "interventions": [
        {
          "name": "There is no intervention.",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Stanford University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "45 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 45 Years · Female only"
      },
      "enrollment_count": 94,
      "start_date": "2012-08-14",
      "completion_date": "2019-04-01",
      "has_results": false,
      "last_update_posted_date": "2023-07-14",
      "last_synced_at": "2026-10-01T13:45:38.438Z",
      "location_count": 1,
      "location_summary": "Stanford, California",
      "locations": [
        {
          "city": "Stanford",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03196245"
    },
    {
      "nct_id": "NCT03718520",
      "title": "The Influence of in Utero Cannabis Exposure on Neonatal Brain Morphology and Structural Connectivity",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Cannabis Use Disorder",
        "PREG1",
        "Drug Use",
        "Fetal Exposure During Pregnancy",
        "Neurodevelopmental Abnormality"
      ],
      "interventions": [
        {
          "name": "no intervention, this is a purely observational study",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Colorado, Denver",
      "sponsor_class": "OTHER",
      "healthy_volunteers": null,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "18 Years and older · Female only"
      },
      "enrollment_count": 168,
      "start_date": "2018-11-07",
      "completion_date": "2020-03-31",
      "has_results": false,
      "last_update_posted_date": "2021-10-27",
      "last_synced_at": "2026-10-01T13:45:38.438Z",
      "location_count": 2,
      "location_summary": "Aurora, Colorado • Denver, Colorado",
      "locations": [
        {
          "city": "Aurora",
          "state": "Colorado"
        },
        {
          "city": "Denver",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03718520"
    },
    {
      "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": "2026-10-01T13:45:38.438Z",
      "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"
    }
  ]
}