{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Opting+Out",
    "query": {
      "intervention": "Opting Out"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 8,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-13T01:30:05.483Z",
  "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": "NCT01233804",
      "title": "Opting In vs Opting Out",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Influenza Vaccination"
      ],
      "interventions": [
        {
          "name": "Opting Out",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "The University of Texas Health Science Center, Houston",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "18 Years and older · Female only"
      },
      "enrollment_count": 280,
      "start_date": "2010-11",
      "completion_date": "2011-08",
      "has_results": false,
      "last_update_posted_date": "2018-05-31",
      "last_synced_at": "2026-09-13T01:30:05.483Z",
      "location_count": 2,
      "location_summary": "Galveston, Texas • Houston, Texas",
      "locations": [
        {
          "city": "Galveston",
          "state": "Texas"
        },
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01233804"
    },
    {
      "nct_id": "NCT07053813",
      "title": "Applying Population Management Best Practices to Preventative Genomic Medicine Trial",
      "overall_status": "ENROLLING_BY_INVITATION",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Neoplastic Syndromes, Hereditary"
      ],
      "interventions": [
        {
          "name": "Web resources",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Personalized outreach",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Washington",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "18 Years to 75 Years"
      },
      "enrollment_count": 900,
      "start_date": "2025-07-01",
      "completion_date": "2028-07-01",
      "has_results": false,
      "last_update_posted_date": "2026-02-27",
      "last_synced_at": "2026-09-13T01:30:05.483Z",
      "location_count": 2,
      "location_summary": "Denver, Colorado • Portland, Oregon",
      "locations": [
        {
          "city": "Denver",
          "state": "Colorado"
        },
        {
          "city": "Portland",
          "state": "Oregon"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07053813"
    },
    {
      "nct_id": "NCT02721082",
      "title": "Changing the Default for Tobacco Treatment",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Tobacco Use Cessation"
      ],
      "interventions": [
        {
          "name": "Opt Out Treatment Program",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Nicotine Replacement Therapy",
          "type": "DRUG"
        },
        {
          "name": "Opt In Treatment Program",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL",
        "DRUG"
      ],
      "sponsor": "University of Kansas Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 1000,
      "start_date": "2016-09-01",
      "completion_date": "2020-12-09",
      "has_results": true,
      "last_update_posted_date": "2022-12-01",
      "last_synced_at": "2026-09-13T01:30:05.483Z",
      "location_count": 1,
      "location_summary": "Kansas City, Kansas",
      "locations": [
        {
          "city": "Kansas City",
          "state": "Kansas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02721082"
    },
    {
      "nct_id": "NCT04737031",
      "title": "Improving Tobacco Treatment Rates for Outpatient Cancer Patients Who Smoke",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Cancer",
        "Smoking",
        "Tobacco Use",
        "Nicotine Dependence"
      ],
      "interventions": [
        {
          "name": "Clinician Nudge",
          "type": "OTHER"
        },
        {
          "name": "Patient Nudge",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Abramson Cancer Center at Penn Medicine",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 2146,
      "start_date": "2021-05-18",
      "completion_date": "2022-07-31",
      "has_results": true,
      "last_update_posted_date": "2024-02-13",
      "last_synced_at": "2026-09-13T01:30:05.483Z",
      "location_count": 3,
      "location_summary": "Lancaster, Pennsylvania • Philadelphia, Pennsylvania • West Chester, Pennsylvania",
      "locations": [
        {
          "city": "Lancaster",
          "state": "Pennsylvania"
        },
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        },
        {
          "city": "West Chester",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04737031"
    },
    {
      "nct_id": "NCT03980574",
      "title": "Dietary Supplementation in Heart Failure",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Heart Failure"
      ],
      "interventions": [
        {
          "name": "R Drink",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Ohio State University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 10,
      "start_date": "2019-04-01",
      "completion_date": "2020-06-29",
      "has_results": false,
      "last_update_posted_date": "2021-10-22",
      "last_synced_at": "2026-09-13T01:30:05.483Z",
      "location_count": 1,
      "location_summary": "Columbus, Ohio",
      "locations": [
        {
          "city": "Columbus",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03980574"
    },
    {
      "nct_id": "NCT03517007",
      "title": "The DETOURS Trial: De-escalating Empiric Treatment: Opting Out of Rx for Selected Patients With Suspected Sepsis - Opt-Out Protocol Trial",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Antibiotic Stewardship"
      ],
      "interventions": [
        {
          "name": "Opt-Out Protocol",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Duke University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 762,
      "start_date": "2018-09-12",
      "completion_date": "2020-08-10",
      "has_results": false,
      "last_update_posted_date": "2025-02-06",
      "last_synced_at": "2026-09-13T01:30:05.483Z",
      "location_count": 10,
      "location_summary": "Atlanta, Georgia • Fayetteville, Georgia • Newnan, Georgia + 6 more",
      "locations": [
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "Fayetteville",
          "state": "Georgia"
        },
        {
          "city": "Newnan",
          "state": "Georgia"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Durham",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03517007"
    },
    {
      "nct_id": "NCT04118348",
      "title": "Evaluating the Efficacy of Pediatric Lipid Screening Alerts",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Hypercholesterolemia",
        "Hypercholesterolemia, Familial",
        "Hypercholesteremia in Children",
        "Hyperlipidemia in Children"
      ],
      "interventions": [
        {
          "name": "Best Practice Alert",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Health Maintenance Topic",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Geisinger Clinic",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "9 Years",
        "maximum_age": "11 Years",
        "sex": "ALL",
        "summary": "9 Years to 11 Years"
      },
      "enrollment_count": 13340,
      "start_date": "2019-10-10",
      "completion_date": "2020-10-11",
      "has_results": true,
      "last_update_posted_date": "2023-11-07",
      "last_synced_at": "2026-09-13T01:30:05.483Z",
      "location_count": 1,
      "location_summary": "Danville, Pennsylvania",
      "locations": [
        {
          "city": "Danville",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04118348"
    },
    {
      "nct_id": "NCT01736345",
      "title": "A Study of the Communication of Genetic Test Results By Telephone: A Multi-Center Study",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Candidates for BRCA 1/2 Genetic Testing"
      ],
      "interventions": [
        {
          "name": "Genetic Providers",
          "type": "GENETIC"
        },
        {
          "name": "Visual Aids",
          "type": "OTHER"
        },
        {
          "name": "Post-Disclosure Asessments",
          "type": "OTHER"
        },
        {
          "name": "In-person Clinical Follow-Up",
          "type": "OTHER"
        },
        {
          "name": "6 Month and 12 Month Assessments",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "GENETIC",
        "OTHER"
      ],
      "sponsor": "Abramson Cancer Center at Penn Medicine",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 289,
      "start_date": "2012-12-03",
      "completion_date": "2015-11",
      "has_results": false,
      "last_update_posted_date": "2022-07-27",
      "last_synced_at": "2026-09-13T01:30:05.483Z",
      "location_count": 5,
      "location_summary": "Chicago, Illinois • Camden, New Jersey • Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Chicago",
          "state": "Illinois"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        },
        {
          "city": "Camden",
          "state": "New Jersey"
        },
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        },
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01736345"
    }
  ]
}