{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Questionnaire&page=11",
    "query": {
      "intervention": "Questionnaire",
      "page": 11
    },
    "page_size": 10
  },
  "pagination": {
    "page": 11,
    "page_size": 10,
    "total_count": 5464,
    "total_pages": 547,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Questionnaire&page=12&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Questionnaire&page=10&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-17T15:00:11.361Z",
  "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": "NCT01810185",
      "title": "Low Dose Naltrexone in Symptomatic Inflammatory Bowel Disease",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Inflammatory Bowel Disease",
        "Crohn's Disease",
        "Ulcerative Colitis"
      ],
      "interventions": [
        {
          "name": "Low dose naltrexone",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Santa Barbara Cottage Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 0,
      "start_date": "2013-03",
      "completion_date": "2014-03",
      "has_results": false,
      "last_update_posted_date": "2014-11-20",
      "last_synced_at": "2026-10-17T15:00:11.361Z",
      "location_count": 1,
      "location_summary": "Santa Barbara, California",
      "locations": [
        {
          "city": "Santa Barbara",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01810185"
    },
    {
      "nct_id": "NCT07566793",
      "title": "Validation of Effectiveness on NaturalCycles Users",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Contraception"
      ],
      "interventions": [
        {
          "name": "Log daily intercourse information",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Natural Cycles application",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL",
        "DEVICE"
      ],
      "sponsor": "Natural Cycles",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "35 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 35 Years · Female only"
      },
      "enrollment_count": 2000,
      "start_date": "2026-04-28",
      "completion_date": "2027-12",
      "has_results": false,
      "last_update_posted_date": "2026-07-01",
      "last_synced_at": "2026-10-17T15:00:11.361Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07566793"
    },
    {
      "nct_id": "NCT03720821",
      "title": "Cognitive Flexibility Training for Persistent Pain: Neuroimaging Pilot (COFLEX-i)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Chronic Pain",
        "Knee Pain Chronic",
        "Hip Pain Chronic",
        "Back Pain"
      ],
      "interventions": [
        {
          "name": "Cognitive Training + fMRI",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Washington University School of Medicine",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "70 Years",
        "sex": "ALL",
        "summary": "18 Years to 70 Years"
      },
      "enrollment_count": 46,
      "start_date": "2019-07-16",
      "completion_date": "2022-02-25",
      "has_results": false,
      "last_update_posted_date": "2022-04-13",
      "last_synced_at": "2026-10-17T15:00:11.361Z",
      "location_count": 1,
      "location_summary": "St Louis, Missouri",
      "locations": [
        {
          "city": "St Louis",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03720821"
    },
    {
      "nct_id": "NCT00119938",
      "title": "An Online System to Improve Diabetes Self-Care",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Diabetes Mellitus, Type 2"
      ],
      "interventions": [
        {
          "name": "Access to online patient portal",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Robert Wood Johnson Foundation",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 331,
      "start_date": "2004-09",
      "completion_date": "2006-12",
      "has_results": false,
      "last_update_posted_date": "2008-08-20",
      "last_synced_at": "2026-10-17T15:00:11.361Z",
      "location_count": 1,
      "location_summary": "Aurora, Colorado",
      "locations": [
        {
          "city": "Aurora",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00119938"
    },
    {
      "nct_id": "NCT04999436",
      "title": "APOL1 Genetic Testing Program for Living Donors, Part 2",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Chronic Kidney Diseases",
        "Genetic Predisposition"
      ],
      "interventions": [
        {
          "name": "APOL1 Counseling Training Program",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Northwestern University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 35,
      "start_date": "2022-07-19",
      "completion_date": "2025-01-27",
      "has_results": false,
      "last_update_posted_date": "2025-07-15",
      "last_synced_at": "2026-10-17T15:00:11.361Z",
      "location_count": 2,
      "location_summary": "Washington D.C., District of Columbia • Chicago, Illinois",
      "locations": [
        {
          "city": "Washington D.C.",
          "state": "District of Columbia"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04999436"
    },
    {
      "nct_id": "NCT04766164",
      "title": "Health Beliefs, Behaviors, and Healthcare Experiences Among United States Young and Mid-Age Adults",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "HPV Vaccine Knowledge"
      ],
      "interventions": [
        {
          "name": "Survey",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "H. Lee Moffitt Cancer Center and Research Institute",
      "sponsor_class": "OTHER",
      "healthy_volunteers": null,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "45 Years",
        "sex": "ALL",
        "summary": "18 Years to 45 Years"
      },
      "enrollment_count": 4000,
      "start_date": "2021-02-17",
      "completion_date": "2022-07-06",
      "has_results": false,
      "last_update_posted_date": "2022-11-03",
      "last_synced_at": "2026-10-17T15:00:11.361Z",
      "location_count": 1,
      "location_summary": "Tampa, Florida",
      "locations": [
        {
          "city": "Tampa",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04766164"
    },
    {
      "nct_id": "NCT04743999",
      "title": "Evaluation of Outcomes in Women Undergoing Multimodality Treatment for Advanced Stage Endometrial Carcinoma",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Endometrial Cancer"
      ],
      "interventions": [
        {
          "name": "Quality of life questionnaire",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Henry Ford Health System",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "90 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 90 Years · Female only"
      },
      "enrollment_count": 9,
      "start_date": "2020-02-27",
      "completion_date": "2023-06-27",
      "has_results": true,
      "last_update_posted_date": "2024-03-29",
      "last_synced_at": "2026-10-17T15:00:11.361Z",
      "location_count": 1,
      "location_summary": "Detroit, Michigan",
      "locations": [
        {
          "city": "Detroit",
          "state": "Michigan"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04743999"
    },
    {
      "nct_id": "NCT00596349",
      "title": "Women Surviving Ovarian Cancer",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Epithelial Ovarian Cancer",
        "Quality of Life",
        "Survivorship"
      ],
      "interventions": [
        {
          "name": "questionnaires",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Memorial Sloan Kettering Cancer Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "Female only"
      },
      "enrollment_count": 62,
      "start_date": "2004-11",
      "completion_date": "2009-02",
      "has_results": false,
      "last_update_posted_date": "2009-02-26",
      "last_synced_at": "2026-10-17T15:00:11.361Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00596349"
    },
    {
      "nct_id": "NCT06707038",
      "title": "Improving Access to Renal Transplantation for Underserved Black Communities",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Kidney Transplant",
        "ESRD (End Stage Renal Disease)"
      ],
      "interventions": [
        {
          "name": "AATAP intervention",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Northwestern University",
      "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": 0,
      "start_date": "2025-04-01",
      "completion_date": "2025-05-06",
      "has_results": false,
      "last_update_posted_date": "2025-05-09",
      "last_synced_at": "2026-10-17T15:00:11.361Z",
      "location_count": 1,
      "location_summary": "Tampa, Florida",
      "locations": [
        {
          "city": "Tampa",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06707038"
    },
    {
      "nct_id": "NCT03716349",
      "title": "Esthetics of Dental Composite and Adhesive System",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Cavities of Teeth"
      ],
      "interventions": [
        {
          "name": "Pulp vitality testing",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Photos",
          "type": "OTHER"
        },
        {
          "name": "local and/or topical anesthetic",
          "type": "DRUG"
        },
        {
          "name": "rubber dam",
          "type": "DEVICE"
        },
        {
          "name": "tooth surface cleaned",
          "type": "OTHER"
        },
        {
          "name": "enamel margins",
          "type": "PROCEDURE"
        },
        {
          "name": "Adhesive Systems",
          "type": "PROCEDURE"
        },
        {
          "name": "cavity preparation",
          "type": "PROCEDURE"
        },
        {
          "name": "Shade selection using Easy Shade 5",
          "type": "OTHER"
        },
        {
          "name": "Light Curing",
          "type": "PROCEDURE"
        },
        {
          "name": "Contoured and polished",
          "type": "PROCEDURE"
        },
        {
          "name": "Consent",
          "type": "OTHER"
        },
        {
          "name": "Health Questionnaire",
          "type": "OTHER"
        },
        {
          "name": "xray",
          "type": "RADIATION"
        },
        {
          "name": "Release of medical information signed",
          "type": "OTHER"
        },
        {
          "name": "Oral Exam",
          "type": "OTHER"
        },
        {
          "name": "Teeth Assessment",
          "type": "OTHER"
        },
        {
          "name": "Clinical Assessment",
          "type": "OTHER"
        },
        {
          "name": "Tokuyama Universal Bond",
          "type": "DEVICE"
        },
        {
          "name": "ScotchBond",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST",
        "OTHER",
        "DRUG",
        "DEVICE",
        "PROCEDURE",
        "RADIATION"
      ],
      "sponsor": "Erica Teixeira",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 36,
      "start_date": "2019-01-01",
      "completion_date": "2025-11-20",
      "has_results": true,
      "last_update_posted_date": "2026-05-01",
      "last_synced_at": "2026-10-17T15:00:11.361Z",
      "location_count": 1,
      "location_summary": "Iowa City, Iowa",
      "locations": [
        {
          "city": "Iowa City",
          "state": "Iowa"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03716349"
    }
  ]
}