{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Study+questionnaires&page=59",
    "query": {
      "intervention": "Study questionnaires",
      "page": 59
    },
    "page_size": 10
  },
  "pagination": {
    "page": 59,
    "page_size": 10,
    "total_count": 3603,
    "total_pages": 361,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Study+questionnaires&page=60&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Study+questionnaires&page=58&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-11-05T02:30:33.476Z",
  "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": "NCT01469429",
      "title": "Phase 1b Food Based Modulation of Biomarkers in Human Tissues at High-Risk for Oral Cancer.",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "Metastatic Squamous Neck Cancer With Occult Primary Squamous Cell Carcinoma",
        "Salivary Gland Squamous Cell Carcinoma",
        "Stage 0 Hypopharyngeal Cancer",
        "Stage 0 Laryngeal Cancer",
        "Stage 0 Lip and Oral Cavity Cancer",
        "Stage 0 Nasopharyngeal Cancer",
        "Stage 0 Oropharyngeal Cancer",
        "Stage 0 Paranasal Sinus and Nasal Cavity Cancer",
        "Stage I Salivary Gland Cancer",
        "Stage I Squamous Cell Carcinoma of the Hypopharynx",
        "Stage I Squamous Cell Carcinoma of the Larynx",
        "Stage I Squamous Cell Carcinoma of the Lip and Oral Cavity",
        "Stage I Squamous Cell Carcinoma of the Nasopharynx",
        "Stage I Squamous Cell Carcinoma of the Oropharynx",
        "Stage I Squamous Cell Carcinoma of the Paranasal Sinus and Nasal Cavity",
        "Stage I Verrucous Carcinoma of the Larynx",
        "Stage I Verrucous Carcinoma of the Oral Cavity",
        "Stage II Salivary Gland Cancer",
        "Stage II Squamous Cell Carcinoma of the Hypopharynx",
        "Stage II Squamous Cell Carcinoma of the Larynx",
        "Stage II Squamous Cell Carcinoma of the Lip and Oral Cavity",
        "Stage II Squamous Cell Carcinoma of the Nasopharynx",
        "Stage II Squamous Cell Carcinoma of the Oropharynx",
        "Stage II Squamous Cell Carcinoma of the Paranasal Sinus and Nasal Cavity",
        "Stage II Verrucous Carcinoma of the Larynx",
        "Stage II Verrucous Carcinoma of the Oral Cavity",
        "Stage III Salivary Gland Cancer",
        "Stage III Squamous Cell Carcinoma of the Hypopharynx",
        "Stage III Squamous Cell Carcinoma of the Larynx",
        "Stage III Squamous Cell Carcinoma of the Lip and Oral Cavity",
        "Stage III Squamous Cell Carcinoma of the Nasopharynx",
        "Stage III Squamous Cell Carcinoma of the Oropharynx",
        "Stage III Verrucous Carcinoma of the Larynx",
        "Stage III Verrucous Carcinoma of the Oral Cavity",
        "Stage IV Squamous Cell Carcinoma of the Hypopharynx",
        "Stage IV Squamous Cell Carcinoma of the Nasopharynx",
        "Stage IVA Salivary Gland Cancer",
        "Stage IVA Squamous Cell Carcinoma of the Larynx",
        "Stage IVA Oral Cavity Squamous Cell Carcinoma",
        "Stage IVA Squamous Cell Carcinoma of the Oropharynx",
        "Stage IVA Nasal Cavity and Paranasal Sinus Cancer",
        "Stage IVA Verrucous Carcinoma of the Larynx",
        "Stage IVA Verrucous Carcinoma of the Oral Cavity",
        "Stage IVB Salivary Gland Cancer",
        "Stage IVB Squamous Cell Carcinoma of the Larynx",
        "Stage IVB Squamous Cell Carcinoma of the Lip and Oral Cavity",
        "Stage IVB Squamous Cell Carcinoma of the Oropharynx",
        "Stage IVB Oral Cavity Squamous Cell Carcinoma",
        "Stage IVB Verrucous Carcinoma of the Larynx",
        "Stage IVB Verrucous Carcinoma of the Oral Cavity",
        "Stage IVC Salivary Gland Cancer",
        "Stage IVC Squamous Cell Carcinoma of the Larynx",
        "Stage IVC Oral Cavity Squamous Cell Carcinoma",
        "Stage IVC Squamous Cell Carcinoma of the Oropharynx",
        "Paranasal Sinus and Nasal Cavity Squamous Cell Carcinoma",
        "Stage IVC Verrucous Carcinoma of the Larynx",
        "Stage IVC Verrucous Carcinoma of the Oral Cavity",
        "Tongue Cancer"
      ],
      "interventions": [
        {
          "name": "placebo",
          "type": "OTHER"
        },
        {
          "name": "laboratory biomarker analysis",
          "type": "OTHER"
        },
        {
          "name": "questionnaire administration",
          "type": "OTHER"
        },
        {
          "name": "chemoprevention",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "OTHER",
        "DRUG"
      ],
      "sponsor": "Ohio State University Comprehensive Cancer Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "21 Years and older"
      },
      "enrollment_count": 70,
      "start_date": "2007-09-04",
      "completion_date": "2014-09-17",
      "has_results": false,
      "last_update_posted_date": "2020-02-20",
      "last_synced_at": "2026-11-05T02:30:33.476Z",
      "location_count": 1,
      "location_summary": "Columbus, Ohio",
      "locations": [
        {
          "city": "Columbus",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01469429"
    },
    {
      "nct_id": "NCT01799031",
      "title": "Educational Intervention for Reducing Work Disability in Breast Cancer Survivors",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Breast Cancer",
        "Cancer Survivor"
      ],
      "interventions": [
        {
          "name": "internet-based intervention",
          "type": "OTHER"
        },
        {
          "name": "management of therapy complications",
          "type": "PROCEDURE"
        },
        {
          "name": "educational intervention",
          "type": "OTHER"
        },
        {
          "name": "questionnaire administration",
          "type": "OTHER"
        },
        {
          "name": "quality-of-life assessment",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "OTHER",
        "PROCEDURE"
      ],
      "sponsor": "University of Wisconsin, Madison",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "25 Years",
        "maximum_age": "64 Years",
        "sex": "FEMALE",
        "summary": "25 Years to 64 Years · Female only"
      },
      "enrollment_count": 44,
      "start_date": "2015-07",
      "completion_date": "2017-06",
      "has_results": false,
      "last_update_posted_date": "2019-11-18",
      "last_synced_at": "2026-11-05T02:30:33.476Z",
      "location_count": 1,
      "location_summary": "Madison, Wisconsin",
      "locations": [
        {
          "city": "Madison",
          "state": "Wisconsin"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01799031"
    },
    {
      "nct_id": "NCT01983995",
      "title": "Examining the Relationships Between Sleep, Fatigue, and Pain in Aromatase Inhibitor-treated Patients",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Breast Cancer"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "University of Michigan",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "50 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "50 Years and older · Female only"
      },
      "enrollment_count": 49,
      "start_date": "2013-11",
      "completion_date": "2016-09",
      "has_results": false,
      "last_update_posted_date": "2016-10-25",
      "last_synced_at": "2026-11-05T02:30:33.476Z",
      "location_count": 1,
      "location_summary": "Ann Arbor, Michigan",
      "locations": [
        {
          "city": "Ann Arbor",
          "state": "Michigan"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01983995"
    },
    {
      "nct_id": "NCT06331377",
      "title": "Clinical and Molecular Characteristics of Histiocytic Disorders",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Histiocytic Disorder"
      ],
      "interventions": [
        {
          "name": "Non-Interventional Study",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Mayo Clinic",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "1 Year",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "1 Year and older"
      },
      "enrollment_count": 500,
      "start_date": "2017-07-27",
      "completion_date": "2027-07-31",
      "has_results": false,
      "last_update_posted_date": "2026-08-04",
      "last_synced_at": "2026-11-05T02:30:33.476Z",
      "location_count": 1,
      "location_summary": "Rochester, Minnesota",
      "locations": [
        {
          "city": "Rochester",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06331377"
    },
    {
      "nct_id": "NCT04496830",
      "title": "SPINCOMS Biomarker Study",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Multiple Sclerosis"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Washington University School of Medicine",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 161,
      "start_date": "2020-06-15",
      "completion_date": "2023-11-24",
      "has_results": false,
      "last_update_posted_date": "2025-09-11",
      "last_synced_at": "2026-11-05T02:30:33.476Z",
      "location_count": 1,
      "location_summary": "St Louis, Missouri",
      "locations": [
        {
          "city": "St Louis",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04496830"
    },
    {
      "nct_id": "NCT00418899",
      "title": "Gliogene: Brain Tumor Linkage Study",
      "overall_status": "UNKNOWN",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Brain Tumor",
        "Glioma"
      ],
      "interventions": [
        {
          "name": "Questionnaire",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "M.D. Anderson Cancer Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 17080,
      "start_date": "2004-02-12",
      "completion_date": "2022-09-01",
      "has_results": false,
      "last_update_posted_date": "2020-12-31",
      "last_synced_at": "2026-11-05T02:30:33.476Z",
      "location_count": 10,
      "location_summary": "San Francisco, California • Tampa, Florida • Chicago, Illinois + 5 more",
      "locations": [
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "Tampa",
          "state": "Florida"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        },
        {
          "city": "Evanston",
          "state": "Illinois"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00418899"
    },
    {
      "nct_id": "NCT01430598",
      "title": "Study Comparing Patient Function and Satisfaction With Arthroscopic Subacromial Decompression Before and After Repair of Complete Rotator Cuff Tears",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Rotator Cuff Tear",
        "Acromial Spur"
      ],
      "interventions": [
        {
          "name": "Rotator Cuff Repair and Subacromial Decompression",
          "type": "PROCEDURE"
        },
        {
          "name": "Questionnaire",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "PROCEDURE",
        "OTHER"
      ],
      "sponsor": "Ascension Health",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "18 Years to 65 Years"
      },
      "enrollment_count": 100,
      "start_date": "2011-08",
      "completion_date": "2012-08",
      "has_results": false,
      "last_update_posted_date": "2011-09-08",
      "last_synced_at": "2026-11-05T02:30:33.476Z",
      "location_count": 2,
      "location_summary": "Grand Blanc, Michigan",
      "locations": [
        {
          "city": "Grand Blanc",
          "state": "Michigan"
        },
        {
          "city": "Grand Blanc",
          "state": "Michigan"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01430598"
    },
    {
      "nct_id": "NCT00887432",
      "title": "Cholecalciferol Supplement in Treating Patients With Localized Prostate Cancer Undergoing Observation",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Prostate Adenocarcinoma"
      ],
      "interventions": [
        {
          "name": "Cholecalciferol",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Laboratory Biomarker Analysis",
          "type": "OTHER"
        },
        {
          "name": "Patient Observation",
          "type": "OTHER"
        },
        {
          "name": "Placebo Administration",
          "type": "DRUG"
        },
        {
          "name": "Quality-of-Life Assessment",
          "type": "OTHER"
        },
        {
          "name": "Questionnaire Administration",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT",
        "OTHER",
        "DRUG"
      ],
      "sponsor": "Roswell Park Cancer Institute",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "MALE",
        "summary": "18 Years and older · Male only"
      },
      "enrollment_count": 132,
      "start_date": "2009-04-08",
      "completion_date": "2020-06-08",
      "has_results": true,
      "last_update_posted_date": "2021-10-26",
      "last_synced_at": "2026-11-05T02:30:33.476Z",
      "location_count": 1,
      "location_summary": "Buffalo, New York",
      "locations": [
        {
          "city": "Buffalo",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00887432"
    },
    {
      "nct_id": "NCT02058732",
      "title": "Therapeutic Imaging Biomarkers for Amyotrophic Lateral Sclerosis",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Amyotrophic Lateral Sclerosis"
      ],
      "interventions": [
        {
          "name": "MRI",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Michigan",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 6,
      "start_date": "2013-11",
      "completion_date": "2015-09-30",
      "has_results": false,
      "last_update_posted_date": "2018-06-06",
      "last_synced_at": "2026-11-05T02:30:33.476Z",
      "location_count": 1,
      "location_summary": "Ann Arbor, Michigan",
      "locations": [
        {
          "city": "Ann Arbor",
          "state": "Michigan"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02058732"
    },
    {
      "nct_id": "NCT04436835",
      "title": "Psychotherapy (Accelerated Resolution Therapy) for Cancer Related Trauma and Distress",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Hematopoietic and Lymphoid System Neoplasm",
        "Malignant Solid Neoplasm"
      ],
      "interventions": [
        {
          "name": "Psychotherapy",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Questionnaire Administration",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL",
        "OTHER"
      ],
      "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": 21,
      "start_date": "2019-11-27",
      "completion_date": "2021-08-19",
      "has_results": false,
      "last_update_posted_date": "2024-12-27",
      "last_synced_at": "2026-11-05T02:30:33.476Z",
      "location_count": 1,
      "location_summary": "Jacksonville, Florida",
      "locations": [
        {
          "city": "Jacksonville",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04436835"
    }
  ]
}