{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Observation+only&page=30",
    "query": {
      "intervention": "Observation only",
      "page": 30
    },
    "page_size": 10
  },
  "pagination": {
    "page": 30,
    "page_size": 10,
    "total_count": 878,
    "total_pages": 88,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Observation+only&page=31&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Observation+only&page=29&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-11-01T22:59:58.929Z",
  "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": "NCT00991588",
      "title": "Clinical Outcome of Posterior Cruciate Ligament (PCL) Posterolateral Reconstruction",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Knee Injuries"
      ],
      "interventions": [
        {
          "name": "PCL, posterolateral reconstruction",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "Sue Barber-Westin",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 20,
      "start_date": "2009-10",
      "completion_date": "2018-12-31",
      "has_results": false,
      "last_update_posted_date": "2019-07-31",
      "last_synced_at": "2026-11-01T22:59:58.929Z",
      "location_count": 1,
      "location_summary": "Cincinnati, Ohio",
      "locations": [
        {
          "city": "Cincinnati",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00991588"
    },
    {
      "nct_id": "NCT02560103",
      "title": "An Observational Study to Investigate the Effects of Rapid Transmeridian Travel",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Jet Lag Disorder"
      ],
      "interventions": [
        {
          "name": "Transmeridian travel across multiple time zones",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Vanda Pharmaceuticals",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "18 Years to 75 Years"
      },
      "enrollment_count": 119,
      "start_date": "2015-09",
      "completion_date": "2017-10",
      "has_results": false,
      "last_update_posted_date": "2018-06-26",
      "last_synced_at": "2026-11-01T22:59:58.929Z",
      "location_count": 2,
      "location_summary": "Santa Monica, California • Chevy Chase, Maryland",
      "locations": [
        {
          "city": "Santa Monica",
          "state": "California"
        },
        {
          "city": "Chevy Chase",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02560103"
    },
    {
      "nct_id": "NCT06436846",
      "title": "Genomic Risk in Retroperitoneal Sarcoma",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Retroperitoneal Liposarcoma",
        "Soft Tissue Sarcoma"
      ],
      "interventions": [
        {
          "name": "Biospecimen sample collection during standard-of-care surgery",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Fox Chase Cancer Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 50,
      "start_date": "2022-03-07",
      "completion_date": "2027-08-01",
      "has_results": false,
      "last_update_posted_date": "2024-05-31",
      "last_synced_at": "2026-11-01T22:59:58.929Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06436846"
    },
    {
      "nct_id": "NCT02832505",
      "title": "Applications of MRI in Kidney Disease",
      "overall_status": "WITHDRAWN",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Chronic Kidney Disease",
        "End-stage Kidney Disease"
      ],
      "interventions": [
        {
          "name": "No intervention but only observational",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Minnesota",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "45 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "45 Years and older"
      },
      "enrollment_count": 0,
      "start_date": "2025-10-30",
      "completion_date": "2028-08-30",
      "has_results": false,
      "last_update_posted_date": "2025-03-25",
      "last_synced_at": "2026-11-01T22:59:58.929Z",
      "location_count": 1,
      "location_summary": "Minneapolis, Minnesota",
      "locations": [
        {
          "city": "Minneapolis",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02832505"
    },
    {
      "nct_id": "NCT02019329",
      "title": "A Study of the Safety, Tolerability and Pharmacokientics of RO5545965 in Patients With Schizophrenia on Risperidone",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Schizophrenia"
      ],
      "interventions": [
        {
          "name": "Placebo",
          "type": "OTHER"
        },
        {
          "name": "RO5545965",
          "type": "DRUG"
        },
        {
          "name": "risperidone",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "OTHER",
        "DRUG"
      ],
      "sponsor": "Hoffmann-La Roche",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "60 Years",
        "sex": "ALL",
        "summary": "18 Years to 60 Years"
      },
      "enrollment_count": 32,
      "start_date": "2014-01",
      "completion_date": "2014-08",
      "has_results": false,
      "last_update_posted_date": "2016-11-02",
      "last_synced_at": "2026-11-01T22:59:58.929Z",
      "location_count": 1,
      "location_summary": "Glendale, California",
      "locations": [
        {
          "city": "Glendale",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02019329"
    },
    {
      "nct_id": "NCT05554510",
      "title": "Pulse Oximetry Errors in Hospitalized Patients Across Varying Skin Pigmentation",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Hypoxemia",
        "Pulse Oximetry",
        "Skin Pigment"
      ],
      "interventions": [
        {
          "name": "Observational",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of California, San Francisco",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 757,
      "start_date": "2022-08-14",
      "completion_date": "2024-08-20",
      "has_results": false,
      "last_update_posted_date": "2025-02-17",
      "last_synced_at": "2026-11-01T22:59:58.929Z",
      "location_count": 1,
      "location_summary": "San Francisco, California",
      "locations": [
        {
          "city": "San Francisco",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05554510"
    },
    {
      "nct_id": "NCT01504399",
      "title": "Rhinological Outcomes in Endonasal Pituitary Surgery",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Pituitary Neoplasm",
        "Pituitary Adenoma",
        "Prolactinoma",
        "Cushings Disease",
        "Acromegaly"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "St. Joseph's Hospital and Medical Center, Phoenix",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "18 Years to 80 Years"
      },
      "enrollment_count": 235,
      "start_date": "2011-10-01",
      "completion_date": "2015-12-09",
      "has_results": false,
      "last_update_posted_date": "2018-08-22",
      "last_synced_at": "2026-11-01T22:59:58.929Z",
      "location_count": 4,
      "location_summary": "Phoenix, Arizona • Santa Monica, California • Chicago, Illinois + 1 more",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Santa Monica",
          "state": "California"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        },
        {
          "city": "Columbus",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01504399"
    },
    {
      "nct_id": "NCT04561232",
      "title": "Locomotor Learning in Infants at High Risk for Cerebral Palsy",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Cerebral Palsy"
      ],
      "interventions": [
        {
          "name": "Prone and Upright Locomotor Training",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Children's Hospital of Philadelphia",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": "6 Weeks",
        "sex": "ALL",
        "summary": "Up to 6 Weeks"
      },
      "enrollment_count": 60,
      "start_date": "2020-12-15",
      "completion_date": "2025-08-04",
      "has_results": false,
      "last_update_posted_date": "2026-06-29",
      "last_synced_at": "2026-11-01T22:59:58.929Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04561232"
    },
    {
      "nct_id": "NCT05854563",
      "title": "Cough Capture as a Portal Into the Lung",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Lung Diseases",
        "Lung Cancer",
        "Lung Diseases, Obstructive",
        "Lung Diseases, Interstitial",
        "Lung Inflammation"
      ],
      "interventions": [
        {
          "name": "Observational only, all subjects; measure DNA mutation and proteomic survey.",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Albert Einstein College of Medicine",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "21 Years and older"
      },
      "enrollment_count": 2000,
      "start_date": "2023-03-28",
      "completion_date": "2027-06",
      "has_results": false,
      "last_update_posted_date": "2026-01-13",
      "last_synced_at": "2026-11-01T22:59:58.929Z",
      "location_count": 1,
      "location_summary": "The Bronx, New York",
      "locations": [
        {
          "city": "The Bronx",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05854563"
    },
    {
      "nct_id": "NCT07625332",
      "title": "Pilot Study of Galantamine to Treat Metabolic Syndrome in People With Chronic Traumatic Spinal Cord Injury (SCI)",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2",
        "PHASE3"
      ],
      "conditions": [
        "Spinal Cord Injury",
        "Traumatic Spinal Cord Injury",
        "Paraplegia and Tetraplegia",
        "Metabolic Syndrome"
      ],
      "interventions": [
        {
          "name": "Galantamine Hydrobromide Extended Release",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Northwell Health",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "21 Years to 75 Years"
      },
      "enrollment_count": 60,
      "start_date": "2026-06-15",
      "completion_date": "2027-12",
      "has_results": false,
      "last_update_posted_date": "2026-06-04",
      "last_synced_at": "2026-11-01T22:59:58.929Z",
      "location_count": 3,
      "location_summary": "West Orange, New Jersey • Manhasset, New York • The Bronx, New York",
      "locations": [
        {
          "city": "West Orange",
          "state": "New Jersey"
        },
        {
          "city": "Manhasset",
          "state": "New York"
        },
        {
          "city": "The Bronx",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07625332"
    }
  ]
}