{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=No+intervention+-+observational+study&page=4",
    "query": {
      "intervention": "No intervention - observational study",
      "page": 4
    },
    "page_size": 10
  },
  "pagination": {
    "page": 4,
    "page_size": 10,
    "total_count": 647,
    "total_pages": 65,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=No+intervention+-+observational+study&page=5&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=No+intervention+-+observational+study&page=3&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-10T01:48:44.081Z",
  "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": "NCT07866560",
      "title": "AKI and Delirium Risk Prediction and Cost Burden Study",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Acute Kidney Injury",
        "Delirium"
      ],
      "interventions": [
        {
          "name": "It is observational trial with no intervention being evaluated",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Nebraska",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "19 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "19 Years and older"
      },
      "enrollment_count": 25000,
      "start_date": "2026-09-01",
      "completion_date": "2027-09-28",
      "has_results": false,
      "last_update_posted_date": "2026-10-08",
      "last_synced_at": "2026-10-10T01:48:44.081Z",
      "location_count": 1,
      "location_summary": "Omaha, Nebraska",
      "locations": [
        {
          "city": "Omaha",
          "state": "Nebraska"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07866560"
    },
    {
      "nct_id": "NCT03426059",
      "title": "Mapping the Phenotype in Adults With Phelan-McDermid Syndrome",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Phelan-McDermid Syndrome",
        "Autism Spectrum Disorder",
        "Intellectual Disability"
      ],
      "interventions": [
        {
          "name": "No Intervention",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Boston Children's Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "22 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "22 Years and older"
      },
      "enrollment_count": 24,
      "start_date": "2018-05-22",
      "completion_date": "2020-12-31",
      "has_results": false,
      "last_update_posted_date": "2025-02-18",
      "last_synced_at": "2026-10-10T01:48:44.081Z",
      "location_count": 6,
      "location_summary": "Stanford, California • Chicago, Illinois • Bethesda, Maryland + 3 more",
      "locations": [
        {
          "city": "Stanford",
          "state": "California"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        },
        {
          "city": "Bethesda",
          "state": "Maryland"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03426059"
    },
    {
      "nct_id": "NCT05044286",
      "title": "Longer-Acting PrEP in Transgender and Gender Diverse Texans",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "HIV-1-infection"
      ],
      "interventions": [
        {
          "name": "no intervention",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Texas at Austin",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "100 Years",
        "sex": "ALL",
        "summary": "18 Years to 100 Years"
      },
      "enrollment_count": 565,
      "start_date": "2022-02-01",
      "completion_date": "2023-08-31",
      "has_results": false,
      "last_update_posted_date": "2023-12-28",
      "last_synced_at": "2026-10-10T01:48:44.081Z",
      "location_count": 1,
      "location_summary": "Austin, Texas",
      "locations": [
        {
          "city": "Austin",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05044286"
    },
    {
      "nct_id": "NCT04574596",
      "title": "Multi-Drug Resistant Organism (MDRO): Study of Highly Resistant Escherichia Coli",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "E Coli Infection"
      ],
      "interventions": [
        {
          "name": "no Intervention",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Duke University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": null,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 300,
      "start_date": "2020-11-12",
      "completion_date": "2021-06-01",
      "has_results": false,
      "last_update_posted_date": "2021-07-27",
      "last_synced_at": "2026-10-10T01:48:44.081Z",
      "location_count": 13,
      "location_summary": "Torrance, California • Aurora, Colorado • Atlanta, Georgia + 10 more",
      "locations": [
        {
          "city": "Torrance",
          "state": "California"
        },
        {
          "city": "Aurora",
          "state": "Colorado"
        },
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "New Orleans",
          "state": "Louisiana"
        },
        {
          "city": "Baltimore",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04574596"
    },
    {
      "nct_id": "NCT01202669",
      "title": "Heart Rate Changes in Subjects With Epilepsy",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Epilepsy"
      ],
      "interventions": [
        {
          "name": "No intervention planned, observational study only.",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Cyberonics, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 98,
      "start_date": "2010-08",
      "completion_date": "2014-07",
      "has_results": false,
      "last_update_posted_date": "2014-08-07",
      "last_synced_at": "2026-10-10T01:48:44.081Z",
      "location_count": 2,
      "location_summary": "Gainesville, Florida • Chicago, Illinois",
      "locations": [
        {
          "city": "Gainesville",
          "state": "Florida"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01202669"
    },
    {
      "nct_id": "NCT02013583",
      "title": "The Glucose Transporter Type I Deficiency (G1D) Registry",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "GLUT1 Deficiency Syndrome",
        "Glucose Transporter Type 1 Deficiency Syndrome",
        "Glucose Transporter Type1 (GLUT-1) Deficiency",
        "GLUT-1 Deficiency Syndrome"
      ],
      "interventions": [
        {
          "name": "No intervention",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Texas Southwestern Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 471,
      "start_date": "2013-12",
      "completion_date": "2024-08-01",
      "has_results": false,
      "last_update_posted_date": "2025-03-07",
      "last_synced_at": "2026-10-10T01:48:44.081Z",
      "location_count": 1,
      "location_summary": "Dallas, Texas",
      "locations": [
        {
          "city": "Dallas",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02013583"
    },
    {
      "nct_id": "NCT06870981",
      "title": "Optimizing Nutrition and Milk (Opti-NuM) Project",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Very Low Birth Weight Baby",
        "Early Nutrition and the Preterm Infant",
        "Nutritional Requirements",
        "Human Milk Fortification",
        "Human Milk Microbiome",
        "Human Milk Feeding",
        "Human Milk Nutrition",
        "Growth &Amp; Development"
      ],
      "interventions": [
        {
          "name": "Opti-NuM is an observational secondary use of data/samples study, the investigators will analyze information and specimens from the MaxiMoM platform RCTs. No interventions form part of this study.",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "The Hospital for Sick Children",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "1 Hour",
        "maximum_age": "21 Days",
        "sex": "ALL",
        "summary": "1 Hour to 21 Days"
      },
      "enrollment_count": 1100,
      "start_date": "2010-10-01",
      "completion_date": "2027-12",
      "has_results": false,
      "last_update_posted_date": "2025-03-11",
      "last_synced_at": "2026-10-10T01:48:44.081Z",
      "location_count": 2,
      "location_summary": "Palo Alto, California • San Diego, California",
      "locations": [
        {
          "city": "Palo Alto",
          "state": "California"
        },
        {
          "city": "San Diego",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06870981"
    },
    {
      "nct_id": "NCT02943044",
      "title": "Quantitative Optical Sensor Findings in Head & Neck Squamous Cell Carcinoma",
      "overall_status": "UNKNOWN",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Squamous Cell Carcinoma"
      ],
      "interventions": [
        {
          "name": "No intervention, this is an observational study",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Zenalux Biomedical, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "24 Years",
        "maximum_age": "89 Years",
        "sex": "ALL",
        "summary": "24 Years to 89 Years"
      },
      "enrollment_count": 50,
      "start_date": "2016-12",
      "completion_date": "2017-12",
      "has_results": false,
      "last_update_posted_date": "2017-03-03",
      "last_synced_at": "2026-10-10T01:48:44.081Z",
      "location_count": 1,
      "location_summary": "Durham, North Carolina",
      "locations": [
        {
          "city": "Durham",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02943044"
    },
    {
      "nct_id": "NCT06002204",
      "title": "Studying the Health of Asians to Advance Knowledge, Treatments, and Interventions for Depression",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Depression",
        "Treatment Resistant Depression",
        "Mood Disorders",
        "Bipolar Disorder",
        "Mental Disorders",
        "Bipolar and Related Disorders"
      ],
      "interventions": [
        {
          "name": "Observational Study",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Texas Southwestern Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "10 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "10 Years and older"
      },
      "enrollment_count": 6000,
      "start_date": "2024-03-01",
      "completion_date": "2035-02",
      "has_results": false,
      "last_update_posted_date": "2026-09-17",
      "last_synced_at": "2026-10-10T01:48:44.081Z",
      "location_count": 1,
      "location_summary": "Dallas, Texas",
      "locations": [
        {
          "city": "Dallas",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06002204"
    },
    {
      "nct_id": "NCT07449715",
      "title": "Respiration From Pleth Validation",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Respiratory Rate Monitoring"
      ],
      "interventions": [
        {
          "name": "Physiological Monitoring with SpO₂ Sensors and Capnography",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Philips Clinical & Medical Affairs Global",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "4 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "4 Years and older"
      },
      "enrollment_count": 113,
      "start_date": "2026-02-06",
      "completion_date": "2026-05-25",
      "has_results": false,
      "last_update_posted_date": "2026-03-04",
      "last_synced_at": "2026-10-10T01:48:44.081Z",
      "location_count": 1,
      "location_summary": "Durham, North Carolina",
      "locations": [
        {
          "city": "Durham",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07449715"
    }
  ]
}