{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=VAS+questionnaire",
    "query": {
      "intervention": "VAS questionnaire"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 48,
    "total_pages": 5,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=VAS+questionnaire&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-10T04:52:55.782Z",
  "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": "NCT06133933",
      "title": "Total Shoulder Arthroplasty Preoperative Pain Threshold and Association With Postoperative Opioid Consumption",
      "overall_status": "ENROLLING_BY_INVITATION",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Total Shoulder Arthroplasty",
        "Postoperative Pain",
        "Opioid Use"
      ],
      "interventions": [
        {
          "name": "Pain Threshold using algometer/dolorimeter",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "The Cooper Health System",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 150,
      "start_date": "2021-05-21",
      "completion_date": "2027-05-21",
      "has_results": false,
      "last_update_posted_date": "2024-08-20",
      "last_synced_at": "2026-09-10T04:52:55.782Z",
      "location_count": 1,
      "location_summary": "Camden, New Jersey",
      "locations": [
        {
          "city": "Camden",
          "state": "New Jersey"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06133933"
    },
    {
      "nct_id": "NCT04007081",
      "title": "Salivary Gland Autotransplantation for Treatment of XRT Induced Xerostomia",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Xerostomia",
        "Head and Neck Cancer"
      ],
      "interventions": [
        {
          "name": "Bone Marrow Aspiration",
          "type": "PROCEDURE"
        },
        {
          "name": "Ultrasound Imaging of Salivary Glands",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Salivary Assay",
          "type": "OTHER"
        },
        {
          "name": "Quality of Life Instruments",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "PROCEDURE",
        "DIAGNOSTIC_TEST",
        "OTHER"
      ],
      "sponsor": "University of Wisconsin, Madison",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "89 Years",
        "sex": "ALL",
        "summary": "18 Years to 89 Years"
      },
      "enrollment_count": 12,
      "start_date": "2019-10-18",
      "completion_date": "2021-03-10",
      "has_results": false,
      "last_update_posted_date": "2021-03-24",
      "last_synced_at": "2026-09-10T04:52:55.782Z",
      "location_count": 1,
      "location_summary": "Madison, Wisconsin",
      "locations": [
        {
          "city": "Madison",
          "state": "Wisconsin"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04007081"
    },
    {
      "nct_id": "NCT06816459",
      "title": "Sensory Tests of Cigarettes for Identification of Flavors in Current Daily Smoking Adults",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "EARLY_PHASE1"
      ],
      "conditions": [
        "Cigarette Smoking-Related Carcinoma"
      ],
      "interventions": [
        {
          "name": "Cigarette smell test",
          "type": "OTHER"
        },
        {
          "name": "Cigarette Taste Test",
          "type": "OTHER"
        },
        {
          "name": "Study questionnaires",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Roswell Park Cancer Institute",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": "55 Years",
        "sex": "ALL",
        "summary": "21 Years to 55 Years"
      },
      "enrollment_count": 30,
      "start_date": "2025-10-14",
      "completion_date": "2027-10-14",
      "has_results": false,
      "last_update_posted_date": "2026-04-06",
      "last_synced_at": "2026-09-10T04:52:55.782Z",
      "location_count": 1,
      "location_summary": "Buffalo, New York",
      "locations": [
        {
          "city": "Buffalo",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06816459"
    },
    {
      "nct_id": "NCT03048058",
      "title": "Internet Surveys and Their Impact on Adherence for Rosacea",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Rosacea"
      ],
      "interventions": [
        {
          "name": "brimonidine topical gel 0.33% & survey",
          "type": "DRUG"
        },
        {
          "name": "brimonidine topical gel 0.33% & SOC",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Wake Forest University Health Sciences",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 20,
      "start_date": "2016-05-05",
      "completion_date": "2017-06",
      "has_results": true,
      "last_update_posted_date": "2018-10-10",
      "last_synced_at": "2026-09-10T04:52:55.782Z",
      "location_count": 1,
      "location_summary": "Winston-Salem, North Carolina",
      "locations": [
        {
          "city": "Winston-Salem",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03048058"
    },
    {
      "nct_id": "NCT04493658",
      "title": "Differential Diagnosis of Sjögren's Versus Non-Sjögren's Dry Eye",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Keratoconjunctivitis Sicca",
        "Dry Eye Syndromes",
        "Ocular Surface Disease",
        "Sjogren's Syndrome"
      ],
      "interventions": [
        {
          "name": "Questionnaires",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Tear fluid sampling",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Impression Cytology",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "Johns Hopkins University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 92,
      "start_date": "2021-01-11",
      "completion_date": "2022-10-03",
      "has_results": false,
      "last_update_posted_date": "2023-01-05",
      "last_synced_at": "2026-09-10T04:52:55.782Z",
      "location_count": 1,
      "location_summary": "Baltimore, Maryland",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04493658"
    },
    {
      "nct_id": "NCT02339740",
      "title": "Tretinoin and Arsenic Trioxide in Treating Patients With Untreated Acute Promyelocytic Leukemia",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Acute Promyelocytic Leukemia With t(15;17)(q24.1;q21.2); PML-RARA"
      ],
      "interventions": [
        {
          "name": "Arsenic Trioxide",
          "type": "DRUG"
        },
        {
          "name": "Cytarabine",
          "type": "DRUG"
        },
        {
          "name": "Dexamethasone",
          "type": "DRUG"
        },
        {
          "name": "Idarubicin",
          "type": "DRUG"
        },
        {
          "name": "Laboratory Biomarker Analysis",
          "type": "OTHER"
        },
        {
          "name": "Mitoxantrone Hydrochloride",
          "type": "DRUG"
        },
        {
          "name": "Quality-of-Life Assessment",
          "type": "OTHER"
        },
        {
          "name": "Questionnaire Administration",
          "type": "OTHER"
        },
        {
          "name": "Tretinoin",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "Children's Oncology Group",
      "sponsor_class": "NETWORK",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "12 Months",
        "maximum_age": "21 Years",
        "sex": "ALL",
        "summary": "12 Months to 21 Years"
      },
      "enrollment_count": 158,
      "start_date": "2015-07-21",
      "completion_date": "2029-06-30",
      "has_results": true,
      "last_update_posted_date": "2026-02-18",
      "last_synced_at": "2026-09-10T04:52:55.782Z",
      "location_count": 152,
      "location_summary": "Birmingham, Alabama • Mobile, Alabama • Anchorage, Alaska + 121 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Mobile",
          "state": "Alabama"
        },
        {
          "city": "Anchorage",
          "state": "Alaska"
        },
        {
          "city": "Mesa",
          "state": "Arizona"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02339740"
    },
    {
      "nct_id": "NCT03400293",
      "title": "Real-world Insights of People With Human Immunodeficiency Virus (HIV) Infection",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "HIV Infections"
      ],
      "interventions": [
        {
          "name": "Functional Assessment of HIV Infection",
          "type": "OTHER"
        },
        {
          "name": "Patient Satisfaction Questionnaire",
          "type": "OTHER"
        },
        {
          "name": "Symptom Distress Module",
          "type": "OTHER"
        },
        {
          "name": "Patient Health Questionnaire",
          "type": "OTHER"
        },
        {
          "name": "Internalized Stigma of AIDS Tool",
          "type": "OTHER"
        },
        {
          "name": "Medication adherence visual analogue scale",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "ViiV Healthcare",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "21 Years and older"
      },
      "enrollment_count": 1184,
      "start_date": "2018-01-18",
      "completion_date": "2018-07-07",
      "has_results": false,
      "last_update_posted_date": "2019-03-11",
      "last_synced_at": "2026-09-10T04:52:55.782Z",
      "location_count": 1,
      "location_summary": "Arlington, Virginia",
      "locations": [
        {
          "city": "Arlington",
          "state": "Virginia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03400293"
    },
    {
      "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": "2026-09-10T04:52:55.782Z",
      "location_count": 1,
      "location_summary": "Stanford, California",
      "locations": [
        {
          "city": "Stanford",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06967337"
    },
    {
      "nct_id": "NCT04899375",
      "title": "Effect of Tissue Flossing on Pain,Function and Movement",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Elbow Tendinopathy"
      ],
      "interventions": [
        {
          "name": "Floss band",
          "type": "DEVICE"
        },
        {
          "name": "ACE bandage",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "New York Institute of Technology",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "60 Years",
        "sex": "ALL",
        "summary": "18 Years to 60 Years"
      },
      "enrollment_count": 9,
      "start_date": "2019-09-01",
      "completion_date": "2020-05-23",
      "has_results": false,
      "last_update_posted_date": "2021-05-24",
      "last_synced_at": "2026-09-10T04:52:55.782Z",
      "location_count": 1,
      "location_summary": "Old Westbury, New York",
      "locations": [
        {
          "city": "Old Westbury",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04899375"
    },
    {
      "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": "2026-09-10T04:52:55.782Z",
      "location_count": 1,
      "location_summary": "St Louis, Missouri",
      "locations": [
        {
          "city": "St Louis",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05145595"
    }
  ]
}