{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Observation+only&page=13",
    "query": {
      "intervention": "Observation only",
      "page": 13
    },
    "page_size": 10
  },
  "pagination": {
    "page": 13,
    "page_size": 10,
    "total_count": 878,
    "total_pages": 88,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Observation+only&page=14&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Observation+only&page=12&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-30T20:25:50.005Z",
  "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": "NCT07904377",
      "title": "ACORYS AI4AF PILOT STUDY",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Atrial Arrhythmia"
      ],
      "interventions": [
        {
          "name": "Acorys Mapping System",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "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": 200,
      "start_date": "2026-01-28",
      "completion_date": "2028-12",
      "has_results": false,
      "last_update_posted_date": "2026-10-29",
      "last_synced_at": "2026-10-30T20:25:50.005Z",
      "location_count": 1,
      "location_summary": "Rochester, Minnesota",
      "locations": [
        {
          "city": "Rochester",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07904377"
    },
    {
      "nct_id": "NCT03543176",
      "title": "Chronic Obstructive Pulmonary Disease (COPD) Dual Therapy Burden of Illness",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Pulmonary Disease, Chronic Obstructive"
      ],
      "interventions": [
        {
          "name": "UMEC/VI",
          "type": "OTHER"
        },
        {
          "name": "FLUT/SAL",
          "type": "OTHER"
        },
        {
          "name": "CAT",
          "type": "OTHER"
        },
        {
          "name": "mMRC",
          "type": "OTHER"
        },
        {
          "name": "Ellipta",
          "type": "DEVICE"
        },
        {
          "name": "Diskus",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "OTHER",
        "DEVICE"
      ],
      "sponsor": "GlaxoSmithKline",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "65 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "65 Years and older"
      },
      "enrollment_count": 789,
      "start_date": "2018-05-31",
      "completion_date": "2019-08-21",
      "has_results": true,
      "last_update_posted_date": "2020-08-05",
      "last_synced_at": "2026-10-30T20:25:50.005Z",
      "location_count": 1,
      "location_summary": "Durham, North Carolina",
      "locations": [
        {
          "city": "Durham",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03543176"
    },
    {
      "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": "2026-10-30T20:25:50.005Z",
      "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": "NCT03292874",
      "title": "High Resolution MRI Study for Prostate Cancer",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Prostate Cancer"
      ],
      "interventions": [
        {
          "name": "high resolution MRI (hrMRI)",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "Cedars-Sinai Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "19 Years",
        "maximum_age": null,
        "sex": "MALE",
        "summary": "19 Years and older · Male only"
      },
      "enrollment_count": 64,
      "start_date": "2017-09-13",
      "completion_date": "2022-12-14",
      "has_results": true,
      "last_update_posted_date": "2024-04-03",
      "last_synced_at": "2026-10-30T20:25:50.005Z",
      "location_count": 1,
      "location_summary": "Los Angeles, California",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03292874"
    },
    {
      "nct_id": "NCT02510040",
      "title": "A Prospective Observational Study of Adult Strabismus",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Convergence Insufficiency",
        "Divergence Insufficiency",
        "Hypertropia"
      ],
      "interventions": [
        {
          "name": "Prism",
          "type": "DEVICE"
        },
        {
          "name": "Orthoptic Exercises",
          "type": "OTHER"
        },
        {
          "name": "Eye Muscle Surgery",
          "type": "PROCEDURE"
        },
        {
          "name": "Botox Injection",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "DEVICE",
        "OTHER",
        "PROCEDURE"
      ],
      "sponsor": "Jaeb Center for Health Research",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 217,
      "start_date": "2015-08-17",
      "completion_date": "2019-01-31",
      "has_results": true,
      "last_update_posted_date": "2023-07-06",
      "last_synced_at": "2026-10-30T20:25:50.005Z",
      "location_count": 1,
      "location_summary": "Norfolk, Virginia",
      "locations": [
        {
          "city": "Norfolk",
          "state": "Virginia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02510040"
    },
    {
      "nct_id": "NCT05336253",
      "title": "Online Expert Peer Facilitation of the EVERYbody Project",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Body Image",
        "Eating Disorder Symptom",
        "Weight Bias"
      ],
      "interventions": [
        {
          "name": "EVERYbody Project-Connect",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Self-Help Workbook",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Western Washington University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 170,
      "start_date": "2022-01-14",
      "completion_date": "2023-08-30",
      "has_results": false,
      "last_update_posted_date": "2023-12-18",
      "last_synced_at": "2026-10-30T20:25:50.005Z",
      "location_count": 1,
      "location_summary": "Bellingham, Washington",
      "locations": [
        {
          "city": "Bellingham",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05336253"
    },
    {
      "nct_id": "NCT07866573",
      "title": "UltraTrac for Cardiac Output Monitoring in Congenital Heart Disease",
      "overall_status": "NOT_YET_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Congenital Heart Disease",
        "Cardiac Output",
        "Hemodynamic Monitoring",
        "Pediatric Heart Disease"
      ],
      "interventions": [
        {
          "name": "UltraTrac",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "University of Minnesota",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "0 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "0 Years to 80 Years"
      },
      "enrollment_count": 70,
      "start_date": "2026-11-01",
      "completion_date": "2030-06-30",
      "has_results": false,
      "last_update_posted_date": "2026-10-08",
      "last_synced_at": "2026-10-30T20:25:50.005Z",
      "location_count": 1,
      "location_summary": "Minneapolis, Minnesota",
      "locations": [
        {
          "city": "Minneapolis",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07866573"
    },
    {
      "nct_id": "NCT05654883",
      "title": "New York City Observational Study of Mpox Immunity",
      "overall_status": "ENROLLING_BY_INVITATION",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Monkeypox",
        "Mpox",
        "HIV"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "NYU Langone Health",
      "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": 188,
      "start_date": "2022-11-11",
      "completion_date": "2027-07-06",
      "has_results": false,
      "last_update_posted_date": "2026-08-27",
      "last_synced_at": "2026-10-30T20:25:50.005Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05654883"
    },
    {
      "nct_id": "NCT05894083",
      "title": "A Phase II Study for p16+ Oropharyngeal Cancer PerSonalized De-escalation Treatment at University of MIchigan (CuSToMIze)",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Oropharyngeal Cancer",
        "Squamous Cell Carcinoma of the Oropharynx"
      ],
      "interventions": [
        {
          "name": "Surgery",
          "type": "PROCEDURE"
        },
        {
          "name": "Chemoradiation",
          "type": "COMBINATION_PRODUCT"
        },
        {
          "name": "Observation",
          "type": "OTHER"
        },
        {
          "name": "Post-operative radiation",
          "type": "RADIATION"
        }
      ],
      "intervention_types": [
        "PROCEDURE",
        "COMBINATION_PRODUCT",
        "OTHER",
        "RADIATION"
      ],
      "sponsor": "University of Michigan Rogel Cancer Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 150,
      "start_date": "2023-04-27",
      "completion_date": "2030-12",
      "has_results": false,
      "last_update_posted_date": "2026-02-02",
      "last_synced_at": "2026-10-30T20:25:50.005Z",
      "location_count": 1,
      "location_summary": "Ann Arbor, Michigan",
      "locations": [
        {
          "city": "Ann Arbor",
          "state": "Michigan"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05894083"
    },
    {
      "nct_id": "NCT03009929",
      "title": "Validation Study of ClassIntra®",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Patient Safety",
        "Intraoperative Complications",
        "Postoperative Complications",
        "Risk Management"
      ],
      "interventions": [
        {
          "name": "Observational study",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University Hospital, Basel, Switzerland",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": "110 Years",
        "sex": "ALL",
        "summary": "Up to 110 Years"
      },
      "enrollment_count": 2500,
      "start_date": "2017-02-15",
      "completion_date": "2018-08-31",
      "has_results": false,
      "last_update_posted_date": "2019-10-17",
      "last_synced_at": "2026-10-30T20:25:50.005Z",
      "location_count": 1,
      "location_summary": "Charlotte, North Carolina",
      "locations": [
        {
          "city": "Charlotte",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03009929"
    }
  ]
}