{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=questionnaires",
    "query": {
      "intervention": "questionnaires"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 5431,
    "total_pages": 544,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=questionnaires&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-02T21:42:43.501Z",
  "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": "NCT03743649",
      "title": "Haloperidol and Lorazepam in Controlling Symptoms of Persistent Agitated Delirium in Patients With Advanced Cancer Undergoing Palliative Care",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2",
        "PHASE3"
      ],
      "conditions": [
        "Delirium",
        "Locally Advanced Malignant Neoplasm",
        "Metastatic Malignant Neoplasm",
        "Recurrent Malignant Neoplasm"
      ],
      "interventions": [
        {
          "name": "Haloperidol",
          "type": "DRUG"
        },
        {
          "name": "Lorazepam",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "OTHER"
        },
        {
          "name": "Quality-of-Life Assessment",
          "type": "OTHER"
        },
        {
          "name": "Questionnaire Administration",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "M.D. Anderson 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": 110,
      "start_date": "2019-07-17",
      "completion_date": "2028-12-31",
      "has_results": false,
      "last_update_posted_date": "2026-06-15",
      "last_synced_at": "2026-09-02T21:42:43.501Z",
      "location_count": 2,
      "location_summary": "Houston, Texas • Richmond, Virginia",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        },
        {
          "city": "Richmond",
          "state": "Virginia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03743649"
    },
    {
      "nct_id": "NCT06370143",
      "title": "A Study Collecting Health Information to Understand and Prevent Gastric Cancer",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Gastric Atrophy",
        "Gastric Intestinal Metaplasia",
        "Dysplasia",
        "Gastric Adenocarcinoma",
        "Gastric Cancer"
      ],
      "interventions": [
        {
          "name": "Questionnaire",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Memorial Sloan Kettering Cancer Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 3200,
      "start_date": "2024-04-11",
      "completion_date": "2036-04-11",
      "has_results": false,
      "last_update_posted_date": "2026-01-30",
      "last_synced_at": "2026-09-02T21:42:43.501Z",
      "location_count": 7,
      "location_summary": "Basking Ridge, New Jersey • Middletown, New Jersey • Montvale, New Jersey + 4 more",
      "locations": [
        {
          "city": "Basking Ridge",
          "state": "New Jersey"
        },
        {
          "city": "Middletown",
          "state": "New Jersey"
        },
        {
          "city": "Montvale",
          "state": "New Jersey"
        },
        {
          "city": "Commack",
          "state": "New York"
        },
        {
          "city": "Harrison",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06370143"
    },
    {
      "nct_id": "NCT00919997",
      "title": "Human Papilloma Virus Infection in HIV-Positive Indian Men Who Have Sex With Men",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Nonneoplastic Condition",
        "Precancerous Condition"
      ],
      "interventions": [
        {
          "name": "DNA analysis",
          "type": "GENETIC"
        },
        {
          "name": "polymerase chain reaction",
          "type": "GENETIC"
        },
        {
          "name": "fluorescence activated cell sorting",
          "type": "OTHER"
        },
        {
          "name": "questionnaire administration",
          "type": "OTHER"
        },
        {
          "name": "study of socioeconomic and demographic variables",
          "type": "OTHER"
        },
        {
          "name": "study of high risk factors",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "GENETIC",
        "OTHER",
        "PROCEDURE"
      ],
      "sponsor": "AIDS Malignancy Consortium",
      "sponsor_class": "NETWORK",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "MALE",
        "summary": "18 Years and older · Male only"
      },
      "enrollment_count": 302,
      "start_date": "2009-07",
      "completion_date": "2010-07",
      "has_results": false,
      "last_update_posted_date": "2015-10-05",
      "last_synced_at": "2026-09-02T21:42:43.501Z",
      "location_count": 1,
      "location_summary": "San Francisco, California",
      "locations": [
        {
          "city": "San Francisco",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00919997"
    },
    {
      "nct_id": "NCT00830310",
      "title": "Customized Medication Adherence Enhancement for Adults With Bipolar Disorder",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Bipolar Disorder"
      ],
      "interventions": [
        {
          "name": "Psychoeducation module",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Substance use module",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Improved communication/rapport with provider module",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Medication routines management module",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University Hospitals Cleveland Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 43,
      "start_date": "2009-01",
      "completion_date": "2010-10",
      "has_results": true,
      "last_update_posted_date": "2014-12-30",
      "last_synced_at": "2026-09-02T21:42:43.501Z",
      "location_count": 1,
      "location_summary": "Cleveland, Ohio",
      "locations": [
        {
          "city": "Cleveland",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00830310"
    },
    {
      "nct_id": "NCT02483559",
      "title": "Seeing the World Through Assorted Glasses",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Sleep"
      ],
      "interventions": [
        {
          "name": "Amber Lenses",
          "type": "OTHER"
        },
        {
          "name": "Placebo Lenses",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of North Carolina, Chapel Hill",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "50 Years",
        "sex": "ALL",
        "summary": "18 Years to 50 Years"
      },
      "enrollment_count": 15,
      "start_date": "2015-06",
      "completion_date": "2016-05",
      "has_results": false,
      "last_update_posted_date": "2017-02-08",
      "last_synced_at": "2026-09-02T21:42:43.501Z",
      "location_count": 1,
      "location_summary": "Chapel Hill, North Carolina",
      "locations": [
        {
          "city": "Chapel Hill",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02483559"
    },
    {
      "nct_id": "NCT00508235",
      "title": "Quality of Friendships in Children With Neurofibromatosis",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Neurofibromatosis"
      ],
      "interventions": [
        {
          "name": "Questionnaire",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "M.D. Anderson Cancer Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "8 Years",
        "maximum_age": "18 Years",
        "sex": "ALL",
        "summary": "8 Years to 18 Years"
      },
      "enrollment_count": 61,
      "start_date": "2004-12",
      "completion_date": "2009-07",
      "has_results": false,
      "last_update_posted_date": "2012-08-01",
      "last_synced_at": "2026-09-02T21:42:43.501Z",
      "location_count": 1,
      "location_summary": "Houston, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00508235"
    },
    {
      "nct_id": "NCT01278225",
      "title": "Effects of Neurofeedback on Neural Function, Neuromodulation, and Chemotherapy-Induced Neuropathic Pain",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Pain",
        "Peripheral Neuropathy"
      ],
      "interventions": [
        {
          "name": "EEG biofeedback (BF) Group",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Wait-List Control (WLC) Group",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Follow UP Questionnaires",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "M.D. Anderson 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": 80,
      "start_date": "2011-02",
      "completion_date": "2027-04-01",
      "has_results": false,
      "last_update_posted_date": "2026-08-11",
      "last_synced_at": "2026-09-02T21:42:43.501Z",
      "location_count": 1,
      "location_summary": "Houston, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01278225"
    },
    {
      "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": "2026-09-02T21:42:43.501Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01346176"
    },
    {
      "nct_id": "NCT06523868",
      "title": "Evaluation of Multi-Cancer Early Detection Testing in a High-Risk Military Population: The Sentinel Study",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Cancer Diagnosis"
      ],
      "interventions": [
        {
          "name": "GRAIL Galleri",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Dana-Farber Cancer Institute",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "45 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "45 Years and older"
      },
      "enrollment_count": 1500,
      "start_date": "2025-03-31",
      "completion_date": "2028-09-30",
      "has_results": false,
      "last_update_posted_date": "2026-02-27",
      "last_synced_at": "2026-09-02T21:42:43.501Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06523868"
    },
    {
      "nct_id": "NCT01673750",
      "title": "Body Image in Youth With HIV",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Human Immunodeficiency Virus",
        "HIV"
      ],
      "interventions": [
        {
          "name": "Questionnaire",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "St. Jude Children's Research Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "16 Years",
        "maximum_age": "23 Years",
        "sex": "ALL",
        "summary": "16 Years to 23 Years"
      },
      "enrollment_count": 146,
      "start_date": "2012-10",
      "completion_date": "2013-12",
      "has_results": false,
      "last_update_posted_date": "2014-04-14",
      "last_synced_at": "2026-09-02T21:42:43.501Z",
      "location_count": 1,
      "location_summary": "Memphis, Tennessee",
      "locations": [
        {
          "city": "Memphis",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01673750"
    }
  ]
}