{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=observational+study&page=24",
    "query": {
      "intervention": "observational study",
      "page": 24
    },
    "page_size": 10
  },
  "pagination": {
    "page": 24,
    "page_size": 10,
    "total_count": 4385,
    "total_pages": 439,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=observational+study&page=25&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=observational+study&page=23&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-20T00:21:52.228Z",
  "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": "NCT05023135",
      "title": "DeepView SnapShot Portable (DV-SSP): Device Training Study",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Burns",
        "Wound Heal"
      ],
      "interventions": [
        {
          "name": "DeepView SnapShot Portable (DV-SSP)",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "SpectralMD",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 251,
      "start_date": "2021-09-07",
      "completion_date": "2023-04-30",
      "has_results": false,
      "last_update_posted_date": "2024-03-06",
      "last_synced_at": "2026-10-20T00:21:52.228Z",
      "location_count": 11,
      "location_summary": "Birmingham, Alabama • Phoenix, Arizona • Bridgeport, Connecticut + 7 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Bridgeport",
          "state": "Connecticut"
        },
        {
          "city": "Washington D.C.",
          "state": "District of Columbia"
        },
        {
          "city": "New Orleans",
          "state": "Louisiana"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05023135"
    },
    {
      "nct_id": "NCT06581835",
      "title": "Accuracy Performance Verification of the INVOS™ PM7100 System in Adults",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Oxygen Saturation"
      ],
      "interventions": [
        {
          "name": "Observational",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Medtronic - MITG",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "50 Years",
        "sex": "ALL",
        "summary": "18 Years to 50 Years"
      },
      "enrollment_count": 42,
      "start_date": "2024-10-21",
      "completion_date": "2025-07-22",
      "has_results": false,
      "last_update_posted_date": "2025-07-25",
      "last_synced_at": "2026-10-20T00:21:52.228Z",
      "location_count": 1,
      "location_summary": "Durham, North Carolina",
      "locations": [
        {
          "city": "Durham",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06581835"
    },
    {
      "nct_id": "NCT01649778",
      "title": "Observational Study of Real World Effectiveness Data and Safety in Patients Receiving Pazopanib With Advanced or Metastatic Renal Cell Carcinoma",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Carcinoma, Renal Cell"
      ],
      "interventions": [
        {
          "name": "Pazopanib",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Novartis Pharmaceuticals",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "99 Years",
        "sex": "ALL",
        "summary": "18 Years to 99 Years"
      },
      "enrollment_count": 662,
      "start_date": "2012-07-19",
      "completion_date": "2017-07-03",
      "has_results": false,
      "last_update_posted_date": "2020-07-15",
      "last_synced_at": "2026-10-20T00:21:52.228Z",
      "location_count": 15,
      "location_summary": "Phoenix, Arizona • Orange, California • Jacksonville, Florida + 12 more",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Orange",
          "state": "California"
        },
        {
          "city": "Jacksonville",
          "state": "Florida"
        },
        {
          "city": "Louisville",
          "state": "Kentucky"
        },
        {
          "city": "Shreveport",
          "state": "Louisiana"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01649778"
    },
    {
      "nct_id": "NCT03325855",
      "title": "Fecal Microbiota Transplant National Registry",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Fecal Microbiota Transplantation",
        "Clostridium Difficile Infection",
        "Gut Microbiome"
      ],
      "interventions": [
        {
          "name": "None - Observational",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "American Gastroenterological Association",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 4000,
      "start_date": "2017-09-20",
      "completion_date": "2027-08",
      "has_results": false,
      "last_update_posted_date": "2026-01-21",
      "last_synced_at": "2026-10-20T00:21:52.228Z",
      "location_count": 52,
      "location_summary": "Phoenix, Arizona • Los Angeles, California • Redwood City, California + 39 more",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Redwood City",
          "state": "California"
        },
        {
          "city": "Roseville",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03325855"
    },
    {
      "nct_id": "NCT00001826",
      "title": "Observation of HIV-Infected Children Receiving Protease Inhibitor and Reverse Transcriptase Inhibitor",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "HIV Infection"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "National Cancer Institute (NCI)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 50,
      "start_date": "1999-07",
      "completion_date": "2006-05",
      "has_results": false,
      "last_update_posted_date": "2008-03-04",
      "last_synced_at": "2026-10-20T00:21:52.228Z",
      "location_count": 1,
      "location_summary": "Bethesda, Maryland",
      "locations": [
        {
          "city": "Bethesda",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00001826"
    },
    {
      "nct_id": "NCT05765578",
      "title": "An Observational Study of Moderna COVID-19 Bivalent Vaccines (Original and Omicron BA.4/BA.5) and 2023 Updated mRNA COVID-19 Vaccines (XBB.1.5)",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "COVID-19"
      ],
      "interventions": [
        {
          "name": "Moderna COVID-19 Vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Moderna mRNA1273.222 Booster",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Pfizer COVID-19 Vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Moderna 2023 Updated COVID-19 vaccine (XBB.1.5)",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Pfizer 2023 Updated COVID-19 vaccine (XBB.1.5)",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "ModernaTX, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 1713,
      "start_date": "2023-03-08",
      "completion_date": "2024-06-17",
      "has_results": false,
      "last_update_posted_date": "2024-07-31",
      "last_synced_at": "2026-10-20T00:21:52.228Z",
      "location_count": 1,
      "location_summary": "Culver City, California",
      "locations": [
        {
          "city": "Culver City",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05765578"
    },
    {
      "nct_id": "NCT03808038",
      "title": "Symptoms of Lower Urinary Tract Dysfunction Protocol 2/Recall Study",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Lower Urinary Tract Symptoms"
      ],
      "interventions": [
        {
          "name": "None- Observational Study",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Arbor Research Collaborative for Health",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 515,
      "start_date": "2017-05-26",
      "completion_date": "2018-05-31",
      "has_results": false,
      "last_update_posted_date": "2019-01-17",
      "last_synced_at": "2026-10-20T00:21:52.228Z",
      "location_count": 6,
      "location_summary": "Chicago, Illinois • Iowa City, Iowa • Ann Arbor, Michigan + 3 more",
      "locations": [
        {
          "city": "Chicago",
          "state": "Illinois"
        },
        {
          "city": "Iowa City",
          "state": "Iowa"
        },
        {
          "city": "Ann Arbor",
          "state": "Michigan"
        },
        {
          "city": "St Louis",
          "state": "Missouri"
        },
        {
          "city": "Durham",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03808038"
    },
    {
      "nct_id": "NCT07183085",
      "title": "Digital Care Programs for Mental Health",
      "overall_status": "ENROLLING_BY_INVITATION",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Mental Distress",
        "Mental Resilience"
      ],
      "interventions": [
        {
          "name": "Intervention",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Sword Health, SA",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 300000,
      "start_date": "2025-09-09",
      "completion_date": "2035-12",
      "has_results": false,
      "last_update_posted_date": "2025-09-19",
      "last_synced_at": "2026-10-20T00:21:52.228Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07183085"
    },
    {
      "nct_id": "NCT05067114",
      "title": "Solutions for Atrial Fibrillation Edvocacy (SAFE)",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Cardiovascular Diseases",
        "Cardiac Arrhythmia",
        "Atrial Fibrillation"
      ],
      "interventions": [
        {
          "name": "Screening, detection and referral for atrial fibrillation",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "American Pharmacists Association Foundation",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 650,
      "start_date": "2021-09-03",
      "completion_date": "2022-06-30",
      "has_results": false,
      "last_update_posted_date": "2023-02-21",
      "last_synced_at": "2026-10-20T00:21:52.228Z",
      "location_count": 1,
      "location_summary": "Washington D.C., District of Columbia",
      "locations": [
        {
          "city": "Washington D.C.",
          "state": "District of Columbia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05067114"
    },
    {
      "nct_id": "NCT01070719",
      "title": "Pharmacokinetic, Immunological and Biochemical Sample Collection and Analysis of a Tysabri Patient Cohort",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Multiple Sclerosis",
        "Relapse"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "John F. Foley, MD",
      "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": 270,
      "start_date": "2010-02",
      "completion_date": "2010-05",
      "has_results": false,
      "last_update_posted_date": "2012-03-01",
      "last_synced_at": "2026-10-20T00:21:52.228Z",
      "location_count": 1,
      "location_summary": "Salt Lake City, Utah",
      "locations": [
        {
          "city": "Salt Lake City",
          "state": "Utah"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01070719"
    }
  ]
}