{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Opt+Out+of+Questionnaire",
    "query": {
      "intervention": "Opt Out of Questionnaire"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 12,
    "total_pages": 2,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Opt+Out+of+Questionnaire&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-02T19:54:13.234Z",
  "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": "NCT01346176",
      "title": "The Influence of Default Options in Advance Directives",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Advance Care Planning"
      ],
      "interventions": [
        {
          "name": "Advance Directive Forms",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Pennsylvania",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "50 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "50 Years and older"
      },
      "enrollment_count": 132,
      "start_date": "2010-04",
      "completion_date": "2012-08",
      "has_results": true,
      "last_update_posted_date": "2016-02-03",
      "last_synced_at": "2026-09-02T19:54:13.234Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01346176"
    },
    {
      "nct_id": "NCT01667952",
      "title": "Prospective Ascertainment for Late Effects Among Survivors of Cancer, Tumor, or a Related Illness",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Pediatric or Young Adult Cancer Survivors"
      ],
      "interventions": [
        {
          "name": "Family History Questionnaire (FHQ)",
          "type": "GENETIC"
        },
        {
          "name": "Salvia sample",
          "type": "GENETIC"
        },
        {
          "name": "Blood sample",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "GENETIC",
        "OTHER"
      ],
      "sponsor": "Memorial Sloan Kettering Cancer Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 1068,
      "start_date": "2012-08",
      "completion_date": "2025-03-06",
      "has_results": false,
      "last_update_posted_date": "2025-03-07",
      "last_synced_at": "2026-09-02T19:54:13.234Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01667952"
    },
    {
      "nct_id": "NCT01495845",
      "title": "Implementation of a Personalized Medicine (Pharmacogenomics) Service in a Community Pharmacy",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Stroke",
        "Transient Ischemic Attack",
        "Myocardial Infarction"
      ],
      "interventions": [
        {
          "name": "Pharmacogenomics testing for clopidogrel responsiveness",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of North Carolina, Chapel Hill",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 48,
      "start_date": "2011-12",
      "completion_date": "2012-06",
      "has_results": false,
      "last_update_posted_date": "2012-06-08",
      "last_synced_at": "2026-09-02T19:54:13.234Z",
      "location_count": 1,
      "location_summary": "Chapel Hill, North Carolina",
      "locations": [
        {
          "city": "Chapel Hill",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01495845"
    },
    {
      "nct_id": "NCT03293771",
      "title": "Transgender Post-reassignment Urogynecologic Measures and Perceptions",
      "overall_status": "UNKNOWN",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Gender Identity Disorder of Adult",
        "Voiding Disorders",
        "Sexual Dysfunction"
      ],
      "interventions": [
        {
          "name": "Focus group interviews",
          "type": "OTHER"
        },
        {
          "name": "Questionnaire packet",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "OTHER",
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "Weill Medical College of Cornell University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "MALE",
        "summary": "18 Years and older · Male only"
      },
      "enrollment_count": 200,
      "start_date": "2017-12-27",
      "completion_date": "2019-12-31",
      "has_results": false,
      "last_update_posted_date": "2019-04-23",
      "last_synced_at": "2026-09-02T19:54:13.234Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03293771"
    },
    {
      "nct_id": "NCT06013176",
      "title": "Behavioral Economic Strategies to Improve PRO Adherence",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Cancer"
      ],
      "interventions": [
        {
          "name": "Encounter-based PRO monitoring",
          "type": "OTHER"
        },
        {
          "name": "Remote PRO monitoring",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Abramson Cancer Center at Penn Medicine",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 476,
      "start_date": "2023-12-04",
      "completion_date": "2024-09-04",
      "has_results": true,
      "last_update_posted_date": "2025-12-29",
      "last_synced_at": "2026-09-02T19:54:13.234Z",
      "location_count": 2,
      "location_summary": "Plainsboro, New Jersey • Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Plainsboro",
          "state": "New Jersey"
        },
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06013176"
    },
    {
      "nct_id": "NCT06674811",
      "title": "Biomarkers of Resiliency In Childhood Cancer Surgery",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Pediatric Cancer",
        "Neuroblastoma",
        "Sarcoma",
        "Wilms Tumor and Other Childhood Kidney Tumors",
        "Childhood Soft Tissue Sarcoma",
        "Childhood Bone Sarcoma",
        "Childhood Malignant Intestinal Neoplasm",
        "Childhood Malignant Liver Neoplasm",
        "Childhood Malignant Lung Neoplasm",
        "Childhood Malignant Ovarian Neoplasm",
        "Childhood Malignant Pleural Neoplasm",
        "Childhood Neuroblastic Tumor",
        "Childhood Sarcoma"
      ],
      "interventions": [
        {
          "name": "Wearing Smartwatch",
          "type": "OTHER"
        },
        {
          "name": "Patient Report Outcomes",
          "type": "OTHER"
        },
        {
          "name": "Blood Draw",
          "type": "OTHER"
        },
        {
          "name": "Clinical Data Review",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Mayo Clinic",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "3 Years",
        "maximum_age": "25 Years",
        "sex": "ALL",
        "summary": "3 Years to 25 Years"
      },
      "enrollment_count": 40,
      "start_date": "2025-01-16",
      "completion_date": "2030-01",
      "has_results": false,
      "last_update_posted_date": "2026-01-26",
      "last_synced_at": "2026-09-02T19:54:13.234Z",
      "location_count": 1,
      "location_summary": "Rochester, Minnesota",
      "locations": [
        {
          "city": "Rochester",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06674811"
    },
    {
      "nct_id": "NCT02010125",
      "title": "Feasibility Trial Using Imaging and Biochemical Technologies to Measure Knee Cartilage Composition in Acute ACL Injury",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Acute Injury of Anterior Cruciate Ligament"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "University of California, San Francisco",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "13 Years",
        "maximum_age": "70 Years",
        "sex": "ALL",
        "summary": "13 Years to 70 Years"
      },
      "enrollment_count": 89,
      "start_date": "2013-11",
      "completion_date": "2017-12",
      "has_results": false,
      "last_update_posted_date": "2018-11-13",
      "last_synced_at": "2026-09-02T19:54:13.234Z",
      "location_count": 1,
      "location_summary": "San Francisco, California",
      "locations": [
        {
          "city": "San Francisco",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02010125"
    },
    {
      "nct_id": "NCT05058846",
      "title": "Pilot Study of Pancreatic Cancer Screening",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Pancreatic Carcinoma"
      ],
      "interventions": [
        {
          "name": "Biospecimen Collection",
          "type": "PROCEDURE"
        },
        {
          "name": "Magnetic Resonance Cholangiopancreatography",
          "type": "PROCEDURE"
        },
        {
          "name": "Magnetic Resonance Imaging",
          "type": "PROCEDURE"
        },
        {
          "name": "Endoscopic ultrasound",
          "type": "PROCEDURE"
        },
        {
          "name": "Questionnaires",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "PROCEDURE",
        "OTHER"
      ],
      "sponsor": "University of California, San Francisco",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 250,
      "start_date": "2022-01-20",
      "completion_date": "2032-01-31",
      "has_results": false,
      "last_update_posted_date": "2026-08-11",
      "last_synced_at": "2026-09-02T19:54:13.234Z",
      "location_count": 1,
      "location_summary": "San Francisco, California",
      "locations": [
        {
          "city": "San Francisco",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05058846"
    },
    {
      "nct_id": "NCT04537702",
      "title": "Prospective Randomized Trial of Streamlined Genetic Education and Testing for Ovarian Cancer Patients",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Ovarian Cancer, Epithelial",
        "Peritoneal Cancer",
        "Fallopian Tube Cancer"
      ],
      "interventions": [
        {
          "name": "Streamlined Education",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Traditional Education",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Duke University",
      "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": 64,
      "start_date": "2019-08-08",
      "completion_date": "2021-07-31",
      "has_results": false,
      "last_update_posted_date": "2021-08-26",
      "last_synced_at": "2026-09-02T19:54:13.234Z",
      "location_count": 1,
      "location_summary": "Durham, North Carolina",
      "locations": [
        {
          "city": "Durham",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04537702"
    },
    {
      "nct_id": "NCT07014618",
      "title": "Navigator-Assisted Hypofractionation (NAVAH) on Radiation Therapy Completion in Breast Cancer and Prostate Cancer",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Breast Cancer",
        "Prostate Cancer"
      ],
      "interventions": [
        {
          "name": "Pre & Post Surveys",
          "type": "OTHER"
        },
        {
          "name": "Opt Out of Questionnaire",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Oklahoma",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 420,
      "start_date": "2025-10-16",
      "completion_date": "2030-10",
      "has_results": false,
      "last_update_posted_date": "2025-12-17",
      "last_synced_at": "2026-09-02T19:54:13.234Z",
      "location_count": 1,
      "location_summary": "Oklahoma City, Oklahoma",
      "locations": [
        {
          "city": "Oklahoma City",
          "state": "Oklahoma"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07014618"
    }
  ]
}