{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Visual+Analog+scale+%28VAS%29+questionnaire",
    "query": {
      "intervention": "Visual Analog scale (VAS) questionnaire"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 31,
    "total_pages": 4,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Visual+Analog+scale+%28VAS%29+questionnaire&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-11T22:17:10.355Z",
  "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": "NCT04688554",
      "title": "Psychosocial, Behavioral, and Radiologic Changes Following Radiosurgery for Benign Neurologic Disease",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Obsessive-Compulsive Disorder",
        "Pain, Intractable",
        "Depression"
      ],
      "interventions": [
        {
          "name": "fMRI and DTI",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Behavioral questionnaires",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Disease-Specific Patient-Reported Outcomes",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Behavioral tests",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST",
        "BEHAVIORAL"
      ],
      "sponsor": "Vanderbilt University 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": 18,
      "start_date": "2020-08-25",
      "completion_date": "2024-02-01",
      "has_results": false,
      "last_update_posted_date": "2024-12-06",
      "last_synced_at": "2026-09-11T22:17:10.355Z",
      "location_count": 1,
      "location_summary": "Nashville, Tennessee",
      "locations": [
        {
          "city": "Nashville",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04688554"
    },
    {
      "nct_id": "NCT06967337",
      "title": "Microsteps Study-Short, Animated Storytelling Video",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Behavior, Health"
      ],
      "interventions": [
        {
          "name": "Microsteps",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Storytelling video",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Instructional Video",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Stanford University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "99 Years",
        "sex": "ALL",
        "summary": "18 Years to 99 Years"
      },
      "enrollment_count": 5431,
      "start_date": "2025-06-19",
      "completion_date": "2025-07-21",
      "has_results": false,
      "last_update_posted_date": "2025-07-23",
      "last_synced_at": "2026-09-11T22:17:10.355Z",
      "location_count": 1,
      "location_summary": "Stanford, California",
      "locations": [
        {
          "city": "Stanford",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06967337"
    },
    {
      "nct_id": "NCT06892496",
      "title": "Patient-reported Outcomes of Donor Site Healing Using Different Palatal Protection Techniques",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Mucosal Erosion",
        "Gingival Recession"
      ],
      "interventions": [
        {
          "name": "Visual Analog scale (VAS) questionnaire",
          "type": "OTHER"
        },
        {
          "name": "Vacuum-formed retainer (VFR) technique",
          "type": "OTHER"
        },
        {
          "name": "3-D printed acrylic resin stent (3DS) technique",
          "type": "OTHER"
        },
        {
          "name": "Flowable resin composite stent (FRC) technique",
          "type": "OTHER"
        },
        {
          "name": "Photographs of the patient's palate",
          "type": "OTHER"
        },
        {
          "name": "Measuring graft dimensions",
          "type": "OTHER"
        },
        {
          "name": "Chairside Polymer Stent",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Virginia Commonwealth University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 56,
      "start_date": "2025-03-07",
      "completion_date": "2027-01",
      "has_results": false,
      "last_update_posted_date": "2026-08-05",
      "last_synced_at": "2026-09-11T22:17:10.355Z",
      "location_count": 1,
      "location_summary": "Richmond, Virginia",
      "locations": [
        {
          "city": "Richmond",
          "state": "Virginia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06892496"
    },
    {
      "nct_id": "NCT06996535",
      "title": "Pancreatic Quantitative Sensory Testing (P-QST)",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Chronic Pancreatitis",
        "Chronic Pain",
        "Acute Recurrent Pancreatitis"
      ],
      "interventions": [
        {
          "name": "Quantitative Sensory Test 1",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Quantitative Sensory Test 2",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Quantitative Sensory Test 3",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "Children's Hospital Medical Center, Cincinnati",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "5 Years",
        "maximum_age": "17 Years",
        "sex": "ALL",
        "summary": "5 Years to 17 Years"
      },
      "enrollment_count": 60,
      "start_date": "2024-08-01",
      "completion_date": "2028-05-01",
      "has_results": false,
      "last_update_posted_date": "2025-05-30",
      "last_synced_at": "2026-09-11T22:17:10.355Z",
      "location_count": 1,
      "location_summary": "Cincinnati, Ohio",
      "locations": [
        {
          "city": "Cincinnati",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06996535"
    },
    {
      "nct_id": "NCT06128538",
      "title": "Implementing Group Battlefield Acupuncture in CCRCs for the Treatment of Chronic Lower Back Pain",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Pain, Back"
      ],
      "interventions": [
        {
          "name": "Auricular acupuncture",
          "type": "DEVICE"
        },
        {
          "name": "Visual Analog Scale for Pain",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Roland-Morris Disability Questionnaire",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "DEVICE",
        "BEHAVIORAL"
      ],
      "sponsor": "Korey Kennelty",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "115 Years",
        "sex": "ALL",
        "summary": "18 Years to 115 Years"
      },
      "enrollment_count": 11,
      "start_date": "2024-10-30",
      "completion_date": "2025-08-15",
      "has_results": false,
      "last_update_posted_date": "2025-08-28",
      "last_synced_at": "2026-09-11T22:17:10.355Z",
      "location_count": 1,
      "location_summary": "Iowa City, Iowa",
      "locations": [
        {
          "city": "Iowa City",
          "state": "Iowa"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06128538"
    },
    {
      "nct_id": "NCT00579865",
      "title": "Quality Of Life in Patients With Malignant Biliary Obstruction",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Gallbladder Cancer",
        "Liver Cancer",
        "Bile Duct Cancer"
      ],
      "interventions": [
        {
          "name": "questionnaires",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Memorial Sloan Kettering 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": 124,
      "start_date": "2005-05",
      "completion_date": "2010-01",
      "has_results": false,
      "last_update_posted_date": "2010-01-14",
      "last_synced_at": "2026-09-11T22:17:10.355Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00579865"
    },
    {
      "nct_id": "NCT05811923",
      "title": "Changes in Metabolic Rate and Perceptual Indicators After Acute Ingestion of Paraxanthine",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Metabolic Syndrome",
        "Caffeine"
      ],
      "interventions": [
        {
          "name": "Venous Blood Collection",
          "type": "OTHER"
        },
        {
          "name": "Resting Metabolic Rate Determination",
          "type": "OTHER"
        },
        {
          "name": "Mood State",
          "type": "OTHER"
        },
        {
          "name": "Visual Analog Scales",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Lindenwood University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "39 Years",
        "sex": "ALL",
        "summary": "18 Years to 39 Years"
      },
      "enrollment_count": 20,
      "start_date": "2021-12-12",
      "completion_date": "2022-10-12",
      "has_results": false,
      "last_update_posted_date": "2023-04-13",
      "last_synced_at": "2026-09-11T22:17:10.355Z",
      "location_count": 1,
      "location_summary": "Saint Charles, Missouri",
      "locations": [
        {
          "city": "Saint Charles",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05811923"
    },
    {
      "nct_id": "NCT05145595",
      "title": "Pain Sensitivity During Puberty",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Pain"
      ],
      "interventions": [
        {
          "name": "Thermal Sensory Analyzer",
          "type": "DEVICE"
        },
        {
          "name": "Pressure Stimuli",
          "type": "DEVICE"
        },
        {
          "name": "Mechanical Stimuli",
          "type": "DEVICE"
        },
        {
          "name": "Pain Ratings",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Thermal pain thresholds",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Pressure pain thresholds (PPT)",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Mechanical temporal summation",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Conditioned pain modulation (CPM) efficiency",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Offset analgesia efficiency",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Cold pain tolerance",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "DEVICE",
        "BEHAVIORAL"
      ],
      "sponsor": "Washington University School of Medicine",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "9 Years",
        "maximum_age": "16 Years",
        "sex": "ALL",
        "summary": "9 Years to 16 Years"
      },
      "enrollment_count": 36,
      "start_date": "2022-09-20",
      "completion_date": "2024-07-17",
      "has_results": false,
      "last_update_posted_date": "2026-01-09",
      "last_synced_at": "2026-09-11T22:17:10.355Z",
      "location_count": 1,
      "location_summary": "St Louis, Missouri",
      "locations": [
        {
          "city": "St Louis",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05145595"
    },
    {
      "nct_id": "NCT02658708",
      "title": "Bright Light on Fatigue in Women Being Treated for Breast Cancer",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Breast Neoplasms",
        "Breast Cancer",
        "Cancer of Breast",
        "Cancer of the Breast"
      ],
      "interventions": [
        {
          "name": "Bright blue-green light using light visor cap",
          "type": "OTHER"
        },
        {
          "name": "Dim red light using light visor cap",
          "type": "OTHER"
        },
        {
          "name": "European Organization for Research and Treatment of Cancer-Quality of Life Questionnaire",
          "type": "OTHER"
        },
        {
          "name": "Epworth Sleepiness Scale",
          "type": "OTHER"
        },
        {
          "name": "Pittsburgh Sleep Quality Index",
          "type": "OTHER"
        },
        {
          "name": "Patient-Reported Outcomes Measurement Information System (PROMIS)-Sleep Disturbance",
          "type": "OTHER"
        },
        {
          "name": "Patient-Reported Outcomes Measurement Information System (PROMIS)-Cancer-Fatigue",
          "type": "OTHER"
        },
        {
          "name": "Digital foot candle datalogging light meter (Extech Instrument, Model SDL400)",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Polysomnography (Easy Ambulatory 2 Cadwell, Kennewick, WA)",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Horne-Ostberg Morningness-Eveningness Questionnaire",
          "type": "OTHER"
        },
        {
          "name": "Daily Fatigue and Sleep Log",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER",
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "Washington University School of Medicine",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "21 Years and older · Female only"
      },
      "enrollment_count": 19,
      "start_date": "2015-10-12",
      "completion_date": "2017-05-09",
      "has_results": false,
      "last_update_posted_date": "2017-09-25",
      "last_synced_at": "2026-09-11T22:17:10.355Z",
      "location_count": 1,
      "location_summary": "St Louis, Missouri",
      "locations": [
        {
          "city": "St Louis",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02658708"
    },
    {
      "nct_id": "NCT06126341",
      "title": "A Study to Identify Barriers to Cellular Therapies for People With Plasma Cell Disorders",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Multiple Myeloma"
      ],
      "interventions": [
        {
          "name": "Lecture on the role of cellular therapies in relapse/refractory multiple myeloma/RRMM",
          "type": "OTHER"
        },
        {
          "name": "Hospital Anxiety and Depression Scale",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Duke-UNC Functional Social Support Questionnaire",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Distress Thermometer",
          "type": "BEHAVIORAL"
        },
        {
          "name": "FACT-BMT",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Psychosocial Assessments of Candidates for Transplantation",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "OTHER",
        "BEHAVIORAL"
      ],
      "sponsor": "Memorial Sloan Kettering Cancer Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "18 Years to 80 Years"
      },
      "enrollment_count": 49,
      "start_date": "2023-11-03",
      "completion_date": "2029-05-03",
      "has_results": false,
      "last_update_posted_date": "2026-02-19",
      "last_synced_at": "2026-09-11T22:17:10.355Z",
      "location_count": 8,
      "location_summary": "Hartford, Connecticut • Basking Ridge, New Jersey • Middletown, New Jersey + 5 more",
      "locations": [
        {
          "city": "Hartford",
          "state": "Connecticut"
        },
        {
          "city": "Basking Ridge",
          "state": "New Jersey"
        },
        {
          "city": "Middletown",
          "state": "New Jersey"
        },
        {
          "city": "Montvale",
          "state": "New Jersey"
        },
        {
          "city": "Commack",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06126341"
    }
  ]
}