{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=No+intervention.+It+is+observational&page=2",
    "query": {
      "intervention": "No intervention. It is observational",
      "page": 2
    },
    "page_size": 10
  },
  "pagination": {
    "page": 2,
    "page_size": 10,
    "total_count": 33,
    "total_pages": 4,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=No+intervention.+It+is+observational&page=3&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=No+intervention.+It+is+observational&page=1&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-01T12:51:06.100Z",
  "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": "NCT06897670",
      "title": "Identifying Cerebral Hemodynamic Patterns in Mood Disorders and Mild Cognitive Impairment: A Functional Near-Infrared Spectroscopy (fNIRS) Study",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Major Depressive Disorder",
        "Bipolar Disorder",
        "Mild Cognitive Impairment"
      ],
      "interventions": [
        {
          "name": "Observational assessment using functional near-infrared spectroscopy (fNIRS), a noninvasive, portable brain imaging tool that measures changes in brain blood flow and oxygen levels.",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Mayo Clinic",
      "sponsor_class": "OTHER",
      "healthy_volunteers": null,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 200,
      "start_date": "2025-03-26",
      "completion_date": "2028-03-30",
      "has_results": false,
      "last_update_posted_date": "2026-04-29",
      "last_synced_at": "2026-10-01T12:51:06.100Z",
      "location_count": 1,
      "location_summary": "Rochester, Minnesota",
      "locations": [
        {
          "city": "Rochester",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06897670"
    },
    {
      "nct_id": "NCT04495699",
      "title": "Asymptomatic Renal Calculi in Recurrent Urinary Tract Infections",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Urinary Tract Infections",
        "Kidney Stone"
      ],
      "interventions": [
        {
          "name": "None - observational",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Vanderbilt University 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": 94,
      "start_date": "2020-09-09",
      "completion_date": "2025-09-01",
      "has_results": false,
      "last_update_posted_date": "2025-10-21",
      "last_synced_at": "2026-10-01T12:51:06.100Z",
      "location_count": 5,
      "location_summary": "Phoenix, Arizona • San Diego, California • Boston, Massachusetts + 2 more",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "New York",
          "state": "New York"
        },
        {
          "city": "Nashville",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04495699"
    },
    {
      "nct_id": "NCT03349411",
      "title": "Spatial Neglect and Delirium After Stroke",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Stroke",
        "Delirium",
        "Spatial Neglect"
      ],
      "interventions": [
        {
          "name": "Confusion Assessment Method",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Behavioral Inattention Test",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Magnetic Resonance Imaging",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Florida Mental Status Examination",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Montreal Cognitive Assessment",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Geriatric Depression Scale",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Kessler Foundation Neglect Assessment Process",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "Kessler Foundation",
      "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": 45,
      "start_date": "2017-07-18",
      "completion_date": "2020-12-30",
      "has_results": false,
      "last_update_posted_date": "2021-04-30",
      "last_synced_at": "2026-10-01T12:51:06.100Z",
      "location_count": 2,
      "location_summary": "West Orange, New Jersey • New York, New York",
      "locations": [
        {
          "city": "West Orange",
          "state": "New Jersey"
        },
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03349411"
    },
    {
      "nct_id": "NCT02234388",
      "title": "Undifferentiated Connective Tissue Disease Registry",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Undifferentiated Connective Tissue Disease"
      ],
      "interventions": [
        {
          "name": "Observation",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Hospital for Special Surgery, New York",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 100,
      "start_date": "2012-03",
      "completion_date": "2027-03-31",
      "has_results": false,
      "last_update_posted_date": "2026-02-12",
      "last_synced_at": "2026-10-01T12:51:06.100Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02234388"
    },
    {
      "nct_id": "NCT04604418",
      "title": "Outcomes and Health Care Resource Utilization in Pediatric Congenital Heart Disease Patients Undergoing Non-Cardiac Procedures",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Congenital Heart Disease in Children"
      ],
      "interventions": [
        {
          "name": "No intervention. It is observational",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Boston Children's Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": "21 Years",
        "sex": "ALL",
        "summary": "Up to 21 Years"
      },
      "enrollment_count": 10000,
      "start_date": "2020-10-01",
      "completion_date": "2026-12-31",
      "has_results": false,
      "last_update_posted_date": "2026-04-07",
      "last_synced_at": "2026-10-01T12:51:06.100Z",
      "location_count": 9,
      "location_summary": "Los Angeles, California • Washington D.C., District of Columbia • Atlanta, Georgia + 6 more",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Washington D.C.",
          "state": "District of Columbia"
        },
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Minneapolis",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04604418"
    },
    {
      "nct_id": "NCT02611661",
      "title": "Local Ablative Strategies After Endovascular Radioembolization",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Metastatic Colorectal Cancer"
      ],
      "interventions": [
        {
          "name": "PET/MRI",
          "type": "DEVICE"
        },
        {
          "name": "Percutaneous ablation",
          "type": "RADIATION"
        },
        {
          "name": "Stereotactic body radiotherapy",
          "type": "RADIATION"
        }
      ],
      "intervention_types": [
        "DEVICE",
        "RADIATION"
      ],
      "sponsor": "Washington University School of Medicine",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 9,
      "start_date": "2016-01-19",
      "completion_date": "2018-02-13",
      "has_results": false,
      "last_update_posted_date": "2018-08-16",
      "last_synced_at": "2026-10-01T12:51:06.100Z",
      "location_count": 1,
      "location_summary": "St Louis, Missouri",
      "locations": [
        {
          "city": "St Louis",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02611661"
    },
    {
      "nct_id": "NCT04639583",
      "title": "Use of NIRS in Preterm Population Born at Altitude",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Prematurity; Extreme"
      ],
      "interventions": [
        {
          "name": "Near-infrared spectroscopy (NIRS) utilization",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "University of New Mexico",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "0 Hours",
        "maximum_age": "24 Hours",
        "sex": "ALL",
        "summary": "0 Hours to 24 Hours"
      },
      "enrollment_count": 21,
      "start_date": "2021-10-01",
      "completion_date": "2023-06-30",
      "has_results": true,
      "last_update_posted_date": "2024-05-29",
      "last_synced_at": "2026-10-01T12:51:06.100Z",
      "location_count": 1,
      "location_summary": "Albuquerque, New Mexico",
      "locations": [
        {
          "city": "Albuquerque",
          "state": "New Mexico"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04639583"
    },
    {
      "nct_id": "NCT03982342",
      "title": "Preliminary Percutaneous Intervention Versus Observational Trial of Arterial Ductus in Low-weight Infants",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Patent Ductus Arteriosus"
      ],
      "interventions": [
        {
          "name": "Cather closure of patent ductus arteriosus (PDA)",
          "type": "DEVICE"
        },
        {
          "name": "Conservative management of patent ductus arteriosus (PDA)",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DEVICE",
        "OTHER"
      ],
      "sponsor": "Nationwide Children's Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "14 Days",
        "maximum_age": "28 Days",
        "sex": "ALL",
        "summary": "14 Days to 28 Days"
      },
      "enrollment_count": 1,
      "start_date": "2020-10-10",
      "completion_date": "2021-08-31",
      "has_results": true,
      "last_update_posted_date": "2024-02-07",
      "last_synced_at": "2026-10-01T12:51:06.100Z",
      "location_count": 2,
      "location_summary": "Columbus, Ohio • Memphis, Tennessee",
      "locations": [
        {
          "city": "Columbus",
          "state": "Ohio"
        },
        {
          "city": "Memphis",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03982342"
    },
    {
      "nct_id": "NCT04933331",
      "title": "Early Caries Lesion Management Observational Study",
      "overall_status": "UNKNOWN",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Initial Caries",
        "Arrested Dental Caries",
        "Cavitated Caries",
        "Dental Caries",
        "Dental Caries in Children"
      ],
      "interventions": [
        {
          "name": "Curodont Repair Fluoride Plus",
          "type": "DRUG"
        },
        {
          "name": "Silver Diamine Fluoride",
          "type": "DEVICE"
        },
        {
          "name": "Glass Ionomer Sealant",
          "type": "DEVICE"
        },
        {
          "name": "Fluoride varnish",
          "type": "DEVICE"
        },
        {
          "name": "Fluoride toothpaste",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG",
        "DEVICE"
      ],
      "sponsor": "CareQuest Institute for Oral Health",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "4 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "4 Years and older"
      },
      "enrollment_count": 744,
      "start_date": "2020-12-07",
      "completion_date": "2024-03-31",
      "has_results": false,
      "last_update_posted_date": "2023-11-24",
      "last_synced_at": "2026-10-01T12:51:06.100Z",
      "location_count": 4,
      "location_summary": "Dothan, Alabama • Westborough, Massachusetts • Bend, Oregon + 1 more",
      "locations": [
        {
          "city": "Dothan",
          "state": "Alabama"
        },
        {
          "city": "Westborough",
          "state": "Massachusetts"
        },
        {
          "city": "Bend",
          "state": "Oregon"
        },
        {
          "city": "Dallas",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04933331"
    },
    {
      "nct_id": "NCT01446627",
      "title": "Use of Insorb Absorbable Vicryl Staples in Skin Closure for Cesarean Section",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Wound Infection"
      ],
      "interventions": [
        {
          "name": "There is no intervention for this study",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "The University of Texas Health Science Center, Houston",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "14 Years",
        "maximum_age": "50 Years",
        "sex": "FEMALE",
        "summary": "14 Years to 50 Years · Female only"
      },
      "enrollment_count": 300,
      "start_date": "2010-01",
      "completion_date": "2012-12",
      "has_results": false,
      "last_update_posted_date": "2013-05-03",
      "last_synced_at": "2026-10-01T12:51:06.100Z",
      "location_count": 1,
      "location_summary": "Houston, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01446627"
    }
  ]
}