{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Observation+Only&page=11",
    "query": {
      "intervention": "Observation Only",
      "page": 11
    },
    "page_size": 10
  },
  "pagination": {
    "page": 11,
    "page_size": 10,
    "total_count": 874,
    "total_pages": 88,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Observation+Only&page=12&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Observation+Only&page=10&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-20T09:53:56.699Z",
  "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": "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": "2026-10-20T09:53:56.699Z",
      "location_count": 1,
      "location_summary": "Glendale, California",
      "locations": [
        {
          "city": "Glendale",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02019329"
    },
    {
      "nct_id": "NCT06004440",
      "title": "Real World Registry for Use of the Ion Endoluminal System",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Lung Cancer",
        "Multiple Pulmonary Nodules",
        "Lung Neoplasms",
        "Respiratory Tract Neoplasms",
        "Thoracic Neoplasms",
        "Neoplasms by Site",
        "Neoplasms",
        "Lung Diseases",
        "Respiratory Tract Diseases"
      ],
      "interventions": [
        {
          "name": "Ion Endoluminal System",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Intuitive Surgical",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 1301,
      "start_date": "2023-09-21",
      "completion_date": "2028-08",
      "has_results": false,
      "last_update_posted_date": "2026-04-24",
      "last_synced_at": "2026-10-20T09:53:56.699Z",
      "location_count": 16,
      "location_summary": "Orlando, Florida • Elk Grove Village, Illinois • Quincy, Illinois + 13 more",
      "locations": [
        {
          "city": "Orlando",
          "state": "Florida"
        },
        {
          "city": "Elk Grove Village",
          "state": "Illinois"
        },
        {
          "city": "Quincy",
          "state": "Illinois"
        },
        {
          "city": "Kansas City",
          "state": "Kansas"
        },
        {
          "city": "New Orleans",
          "state": "Louisiana"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06004440"
    },
    {
      "nct_id": "NCT06378632",
      "title": "AN INTERNATIONAL, OBSERVATIONAL, BLINDED STUDY TO ASSESS THE PERFORMANCE OF THE CORDIO HEARO SYSTEM",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Heart Failure"
      ],
      "interventions": [
        {
          "name": "Hearo App",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Cordio Medical",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "22 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "22 Years and older"
      },
      "enrollment_count": 500,
      "start_date": "2022-02-11",
      "completion_date": "2025-07-15",
      "has_results": false,
      "last_update_posted_date": "2025-03-26",
      "last_synced_at": "2026-10-20T09:53:56.699Z",
      "location_count": 37,
      "location_summary": "Fairhope, Alabama • La Jolla, California • Loma Linda, California + 29 more",
      "locations": [
        {
          "city": "Fairhope",
          "state": "Alabama"
        },
        {
          "city": "La Jolla",
          "state": "California"
        },
        {
          "city": "Loma Linda",
          "state": "California"
        },
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "San Francisco",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06378632"
    },
    {
      "nct_id": "NCT04814914",
      "title": "An Observational Clinical Study to Evaluate COVID-19 Symptoms in \"Long Hauler\" Patients Who Participated in K031-120 or K032-120",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "COVID-19"
      ],
      "interventions": [
        {
          "name": "KB109 + Self Supportive Care",
          "type": "OTHER"
        },
        {
          "name": "Self Supportive Care (SSC) Alone",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Kaleido Biosciences",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": null,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 333,
      "start_date": "2021-03-25",
      "completion_date": "2021-05-28",
      "has_results": false,
      "last_update_posted_date": "2021-08-18",
      "last_synced_at": "2026-10-20T09:53:56.699Z",
      "location_count": 2,
      "location_summary": "Hot Springs, Arkansas • Chicago, Illinois",
      "locations": [
        {
          "city": "Hot Springs",
          "state": "Arkansas"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04814914"
    },
    {
      "nct_id": "NCT01107106",
      "title": "Safety, Tolerability, and Efficacy of ellaOne® (Ulipristal Acetate) for Emergency Contraception in Postmenarcheal Adolescent Girls and Women",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Contraception"
      ],
      "interventions": [
        {
          "name": "ellaOne® (ulipristal acetate)",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "HRA Pharma",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "Female only"
      },
      "enrollment_count": 579,
      "start_date": "2010-05",
      "completion_date": "2013-02",
      "has_results": false,
      "last_update_posted_date": "2013-05-15",
      "last_synced_at": "2026-10-20T09:53:56.699Z",
      "location_count": 4,
      "location_summary": "Denver, Colorado • Lakewood, Colorado • Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Denver",
          "state": "Colorado"
        },
        {
          "city": "Lakewood",
          "state": "Colorado"
        },
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        },
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01107106"
    },
    {
      "nct_id": "NCT04857515",
      "title": "Clinical Learning Study for a Mobile Smoking Cessation Program",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Smoking Cessation",
        "Smoking Behaviors",
        "Smoking Reduction",
        "Smoking, Cigarette",
        "Smoking",
        "Nicotine Dependence"
      ],
      "interventions": [
        {
          "name": "Clickotine®",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Click Therapeutics, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 78,
      "start_date": "2021-03-12",
      "completion_date": "2021-06-28",
      "has_results": false,
      "last_update_posted_date": "2021-08-17",
      "last_synced_at": "2026-10-20T09:53:56.699Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04857515"
    },
    {
      "nct_id": "NCT04520373",
      "title": "Autologous Adipose Derived Mesenchymal Stem Cells for Spinal Cord Injury Patients",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Spinal Cord Injuries",
        "Paralysis"
      ],
      "interventions": [
        {
          "name": "Best Medical Management: Occupational and Physical Therapy",
          "type": "OTHER"
        },
        {
          "name": "Autologous, Adipose Derived Mesenchymal Stem Cells",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "OTHER",
        "BIOLOGICAL"
      ],
      "sponsor": "Mayo Clinic",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 40,
      "start_date": "2020-06-25",
      "completion_date": "2026-07",
      "has_results": false,
      "last_update_posted_date": "2025-10-14",
      "last_synced_at": "2026-10-20T09:53:56.699Z",
      "location_count": 1,
      "location_summary": "Rochester, Minnesota",
      "locations": [
        {
          "city": "Rochester",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04520373"
    },
    {
      "nct_id": "NCT02995941",
      "title": "Shoulder Symptom Irritability Scale: A Single-Blinded Observational Study",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Shoulder Pain",
        "Pain"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "St. Luke's Hospital and Health Network, Pennsylvania",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 138,
      "start_date": "2016-12",
      "completion_date": "2017-07",
      "has_results": false,
      "last_update_posted_date": "2019-09-20",
      "last_synced_at": "2026-10-20T09:53:56.699Z",
      "location_count": 17,
      "location_summary": "Washington, New Jersey • Allentown, Pennsylvania • Bath, Pennsylvania + 11 more",
      "locations": [
        {
          "city": "Washington",
          "state": "New Jersey"
        },
        {
          "city": "Allentown",
          "state": "Pennsylvania"
        },
        {
          "city": "Allentown",
          "state": "Pennsylvania"
        },
        {
          "city": "Bath",
          "state": "Pennsylvania"
        },
        {
          "city": "Bethlehem",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02995941"
    },
    {
      "nct_id": "NCT04895553",
      "title": "Incidence of Intracranial Hemorrhage in Glioma Patients With Venous Thromboembolism Converted From LMWH to Apixaban",
      "overall_status": "TERMINATED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Glioma, Malignant"
      ],
      "interventions": [
        {
          "name": "Observation of ICH and VTE",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 60,
      "start_date": "2021-08-01",
      "completion_date": "2022-08-05",
      "has_results": false,
      "last_update_posted_date": "2022-12-02",
      "last_synced_at": "2026-10-20T09:53:56.699Z",
      "location_count": 2,
      "location_summary": "Sacramento, California • Baltimore, Maryland",
      "locations": [
        {
          "city": "Sacramento",
          "state": "California"
        },
        {
          "city": "Baltimore",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04895553"
    },
    {
      "nct_id": "NCT03719079",
      "title": "Nanowear Heart Failure Management Multi-sensor Algorithm",
      "overall_status": "TERMINATED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Heart Failure"
      ],
      "interventions": [
        {
          "name": "SimpleSENSE",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Nanowear Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 13,
      "start_date": "2019-08-21",
      "completion_date": "2024-06-18",
      "has_results": false,
      "last_update_posted_date": "2026-04-09",
      "last_synced_at": "2026-10-20T09:53:56.699Z",
      "location_count": 1,
      "location_summary": "Hershey, Pennsylvania",
      "locations": [
        {
          "city": "Hershey",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03719079"
    }
  ]
}