{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Control+Comparator&page=58",
    "query": {
      "intervention": "Control Comparator",
      "page": 58
    },
    "page_size": 10
  },
  "pagination": {
    "page": 58,
    "page_size": 10,
    "total_count": 1670,
    "total_pages": 167,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Control+Comparator&page=59&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Control+Comparator&page=57&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-25T20:31:46.793Z",
  "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": "NCT05201534",
      "title": "Interventions in Mathematics and Cognitive Skills",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Math Learning Disability",
        "Child Development",
        "Developmental Disability",
        "Learning Disabilities",
        "Learning Disabled",
        "Learning Curve",
        "Mathematics Disorder",
        "Dyscalculia",
        "Dyscalculia, Primary",
        "Dyscalculia, Acquired",
        "Specific Learning Disorder, With Impairment in Mathematics",
        "Individuality",
        "Behavior, Child",
        "Behavior and Behavior Mechanisms",
        "Behavior",
        "Decision Making",
        "Neuronal Plasticity",
        "Cognition",
        "Cognition Disorder",
        "Cognitive Dysfunction",
        "Cognitive Change",
        "Cognitive Impairment, Mild",
        "Cognitive Developmental Delay",
        "Cognitive Orientation",
        "Cognitive Delay, Mild",
        "Cognitive Deficits, Mild",
        "Cognitive Abnormality",
        "Neuroscience"
      ],
      "interventions": [
        {
          "name": "Interventions in Mathematics and Cognitive Skills - Experimental",
          "type": "OTHER"
        },
        {
          "name": "Interventions in Mathematics and Cognitive Skills - Active Comparator",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Stanford University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "6 Years",
        "maximum_age": "12 Years",
        "sex": "ALL",
        "summary": "6 Years to 12 Years"
      },
      "enrollment_count": 180,
      "start_date": "2023-05-05",
      "completion_date": "2027-08-31",
      "has_results": false,
      "last_update_posted_date": "2026-08-11",
      "last_synced_at": "2026-10-25T20:31:46.793Z",
      "location_count": 1,
      "location_summary": "Palo Alto, California",
      "locations": [
        {
          "city": "Palo Alto",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05201534"
    },
    {
      "nct_id": "NCT00344721",
      "title": "A Placebo Controlled Double Masked Clinical Assessment Study of Essential Fatty Acid Supplement and Its Effect on Patients With Apparent Aqueous Deficient Dry Eye Syndrome",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Dry Eye Syndrome"
      ],
      "interventions": [
        {
          "name": "Omega-3 fatty acid supplement",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Placebo",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "University of Texas Southwestern Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "90 Years",
        "sex": "ALL",
        "summary": "18 Years to 90 Years"
      },
      "enrollment_count": 42,
      "start_date": "2004-09",
      "completion_date": "2008-10",
      "has_results": false,
      "last_update_posted_date": "2018-05-14",
      "last_synced_at": "2026-10-25T20:31:46.793Z",
      "location_count": 1,
      "location_summary": "Dallas, Texas",
      "locations": [
        {
          "city": "Dallas",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00344721"
    },
    {
      "nct_id": "NCT03856593",
      "title": "Encouraging Judicious Prescribing of Opioids in Los Angeles County",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Substance-Related Disorders"
      ],
      "interventions": [
        {
          "name": "Standard letter",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Comparator letter",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Southern California",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 541,
      "start_date": "2019-04-05",
      "completion_date": "2021-08-08",
      "has_results": true,
      "last_update_posted_date": "2023-03-28",
      "last_synced_at": "2026-10-25T20:31:46.793Z",
      "location_count": 1,
      "location_summary": "Los Angeles, California",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03856593"
    },
    {
      "nct_id": "NCT07673614",
      "title": "Transcranial Direct Current Stimulation for the Treatment of Chemotherapy-Induced Peripheral Neuropathy in Cancer Survivors",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Chemotherapy-Induced Peripheral Neuropathy",
        "Hematopoietic and Lymphatic System Neoplasm",
        "Malignant Solid Neoplasm"
      ],
      "interventions": [
        {
          "name": "Sham Intervention",
          "type": "PROCEDURE"
        },
        {
          "name": "Survey Administration",
          "type": "OTHER"
        },
        {
          "name": "Transcranial Direct Current Stimulation",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "PROCEDURE",
        "OTHER",
        "DEVICE"
      ],
      "sponsor": "University of Michigan Rogel Cancer Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "85 Years",
        "sex": "ALL",
        "summary": "18 Years to 85 Years"
      },
      "enrollment_count": 50,
      "start_date": "2026-09-10",
      "completion_date": "2028-02",
      "has_results": false,
      "last_update_posted_date": "2026-10-15",
      "last_synced_at": "2026-10-25T20:31:46.793Z",
      "location_count": 1,
      "location_summary": "Ann Arbor, Michigan",
      "locations": [
        {
          "city": "Ann Arbor",
          "state": "Michigan"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07673614"
    },
    {
      "nct_id": "NCT07425509",
      "title": "Evaluation of a Stannous Fluoride Dentifrice for Control of Oral Malodor",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Oral Malodor (Halitosis)"
      ],
      "interventions": [
        {
          "name": "Sodium Fluoride Dentifrice",
          "type": "DRUG"
        },
        {
          "name": "Stannous Fluoride Toothpaste (SnF)",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Church & Dwight Company, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 49,
      "start_date": "2024-09-09",
      "completion_date": "2024-11-04",
      "has_results": false,
      "last_update_posted_date": "2026-02-23",
      "last_synced_at": "2026-10-25T20:31:46.793Z",
      "location_count": 1,
      "location_summary": "Fort Wayne, Indiana",
      "locations": [
        {
          "city": "Fort Wayne",
          "state": "Indiana"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07425509"
    },
    {
      "nct_id": "NCT06956014",
      "title": "Efficacy and Safety of VER-01 in the Treatment of Participants With Chronic Painful Lumbosacral Radiculopathy",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Lumbosacral Radiculopathy"
      ],
      "interventions": [
        {
          "name": "VER-01",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "Vertanical GmbH",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 810,
      "start_date": "2026-09-22",
      "completion_date": "2028-09",
      "has_results": false,
      "last_update_posted_date": "2026-10-21",
      "last_synced_at": "2026-10-25T20:31:46.793Z",
      "location_count": 23,
      "location_summary": "Mobile, Alabama • Tempe, Arizona • Long Beach, California + 19 more",
      "locations": [
        {
          "city": "Mobile",
          "state": "Alabama"
        },
        {
          "city": "Tempe",
          "state": "Arizona"
        },
        {
          "city": "Long Beach",
          "state": "California"
        },
        {
          "city": "Bradenton",
          "state": "Florida"
        },
        {
          "city": "Jacksonville",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06956014"
    },
    {
      "nct_id": "NCT02187471",
      "title": "Treatment of Pain Associated With Fibromyalgia",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Pain Associated With Fibromyalgia"
      ],
      "interventions": [
        {
          "name": "DS-5565",
          "type": "DRUG"
        },
        {
          "name": "Pregabalin",
          "type": "DRUG"
        },
        {
          "name": "Placebo tablet",
          "type": "DRUG"
        },
        {
          "name": "Placebo capsule",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Daiichi Sankyo",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 1301,
      "start_date": "2015-01-16",
      "completion_date": "2017-01-12",
      "has_results": true,
      "last_update_posted_date": "2020-11-09",
      "last_synced_at": "2026-10-25T20:31:46.793Z",
      "location_count": 91,
      "location_summary": "Birmingham, Alabama • Huntsville, Alabama • Phoenix, Arizona + 87 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Huntsville",
          "state": "Alabama"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Scottsdale",
          "state": "Arizona"
        },
        {
          "city": "Tempe",
          "state": "Arizona"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02187471"
    },
    {
      "nct_id": "NCT04517864",
      "title": "PLACEBO-CONTROLLED SAFETY STUDY OF RITLECITINIB (PF-06651600) IN ADULTS WITH ALOPECIA AREATA",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Alopecia Areata"
      ],
      "interventions": [
        {
          "name": "PF-06651600",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Pfizer",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "50 Years",
        "sex": "ALL",
        "summary": "18 Years to 50 Years"
      },
      "enrollment_count": 71,
      "start_date": "2020-09-15",
      "completion_date": "2024-05-07",
      "has_results": true,
      "last_update_posted_date": "2025-07-11",
      "last_synced_at": "2026-10-25T20:31:46.793Z",
      "location_count": 23,
      "location_summary": "Huntington Beach, California • Irvine, California • Boca Raton, Florida + 17 more",
      "locations": [
        {
          "city": "Huntington Beach",
          "state": "California"
        },
        {
          "city": "Irvine",
          "state": "California"
        },
        {
          "city": "Boca Raton",
          "state": "Florida"
        },
        {
          "city": "Hollywood",
          "state": "Florida"
        },
        {
          "city": "Jacksonville",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04517864"
    },
    {
      "nct_id": "NCT03820947",
      "title": "VenaSeal Spectrum: Global Post-Market Randomized Controlled Trial",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Venous Reflux"
      ],
      "interventions": [
        {
          "name": "VenaSeal™ System",
          "type": "DEVICE"
        },
        {
          "name": "Endothermal Ablation (ETA)",
          "type": "DEVICE"
        },
        {
          "name": "Surgical Stripping",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "DEVICE",
        "PROCEDURE"
      ],
      "sponsor": "Medtronic Endovascular",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 506,
      "start_date": "2020-02-05",
      "completion_date": "2025-11-10",
      "has_results": true,
      "last_update_posted_date": "2026-08-25",
      "last_synced_at": "2026-10-25T20:31:46.793Z",
      "location_count": 12,
      "location_summary": "Prescott Valley, Arizona • Tucson, Arizona • Fresno, California + 9 more",
      "locations": [
        {
          "city": "Prescott Valley",
          "state": "Arizona"
        },
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "Fresno",
          "state": "California"
        },
        {
          "city": "Darien",
          "state": "Connecticut"
        },
        {
          "city": "New Haven",
          "state": "Connecticut"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03820947"
    },
    {
      "nct_id": "NCT02822755",
      "title": "Home Exercise Adherence in Physical Therapy",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Adherence"
      ],
      "interventions": [
        {
          "name": "Home Exercise Program and Adherence Logs",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Evan J. Petersen",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "18 Years to 65 Years"
      },
      "enrollment_count": 25,
      "start_date": "2016-06",
      "completion_date": "2018-09",
      "has_results": false,
      "last_update_posted_date": "2019-04-17",
      "last_synced_at": "2026-10-25T20:31:46.793Z",
      "location_count": 1,
      "location_summary": "San Antonio, Texas",
      "locations": [
        {
          "city": "San Antonio",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02822755"
    }
  ]
}