{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Observational%2FCognitive+Assessment&page=2",
    "query": {
      "intervention": "Observational/Cognitive Assessment",
      "page": 2
    },
    "page_size": 10
  },
  "pagination": {
    "page": 2,
    "page_size": 10,
    "total_count": 10,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Observational%2FCognitive+Assessment&page=1&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-09-26T00:10:12.853Z",
  "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": "NCT06640569",
      "title": "Preliminary Characterization of Commercial Kratom Extract Products",
      "overall_status": "TERMINATED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Kratom Pharmacodynamics",
        "Kratom Pharmacokinetics"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Johns Hopkins University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "21 Years and older"
      },
      "enrollment_count": 2,
      "start_date": "2024-11-11",
      "completion_date": "2026-07-23",
      "has_results": false,
      "last_update_posted_date": "2026-08-13",
      "last_synced_at": "2026-09-26T00:10:12.853Z",
      "location_count": 2,
      "location_summary": "Baltimore, Maryland",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        },
        {
          "city": "Baltimore",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06640569"
    },
    {
      "nct_id": "NCT04117542",
      "title": "Working Memory in Overweight Children With and Without Loss of Control Eating",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Binge Eating",
        "Pediatric Obesity"
      ],
      "interventions": [
        {
          "name": "Observational",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "The Miriam Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": null,
      "eligibility": {
        "minimum_age": "10 Years",
        "maximum_age": "17 Years",
        "sex": "ALL",
        "summary": "10 Years to 17 Years"
      },
      "enrollment_count": 30,
      "start_date": "2018-10-18",
      "completion_date": "2020-12-31",
      "has_results": false,
      "last_update_posted_date": "2021-02-23",
      "last_synced_at": "2026-09-26T00:10:12.853Z",
      "location_count": 1,
      "location_summary": "Providence, Rhode Island",
      "locations": [
        {
          "city": "Providence",
          "state": "Rhode Island"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04117542"
    },
    {
      "nct_id": "NCT04701671",
      "title": "Project THINK: Trajectories of Health, Ingestive Behaviors, and Neurocognition in Kids",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Pediatric Obesity",
        "Binge-Eating Disorder"
      ],
      "interventions": [
        {
          "name": "Observational (not including MRI scanning)",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Observational (including MRI scanning)",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Pittsburgh",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "9 Years",
        "maximum_age": "12 Years",
        "sex": "ALL",
        "summary": "9 Years to 12 Years"
      },
      "enrollment_count": 180,
      "start_date": "2020-12-10",
      "completion_date": "2028-05-09",
      "has_results": false,
      "last_update_posted_date": "2026-06-04",
      "last_synced_at": "2026-09-26T00:10:12.853Z",
      "location_count": 2,
      "location_summary": "Pittsburgh, Pennsylvania • Providence, Rhode Island",
      "locations": [
        {
          "city": "Pittsburgh",
          "state": "Pennsylvania"
        },
        {
          "city": "Providence",
          "state": "Rhode Island"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04701671"
    },
    {
      "nct_id": "NCT04121598",
      "title": "Project TEACH: The Eating, Affect, and Cognitive Health Study",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Pediatric Obesity",
        "Binge Eating"
      ],
      "interventions": [
        {
          "name": "Observational",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Pittsburgh",
      "sponsor_class": "OTHER",
      "healthy_volunteers": null,
      "eligibility": {
        "minimum_age": "10 Years",
        "maximum_age": "17 Years",
        "sex": "ALL",
        "summary": "10 Years to 17 Years"
      },
      "enrollment_count": 48,
      "start_date": "2019-06-14",
      "completion_date": "2021-11-30",
      "has_results": false,
      "last_update_posted_date": "2022-01-10",
      "last_synced_at": "2026-09-26T00:10:12.853Z",
      "location_count": 1,
      "location_summary": "Providence, Rhode Island",
      "locations": [
        {
          "city": "Providence",
          "state": "Rhode Island"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04121598"
    },
    {
      "nct_id": "NCT05106374",
      "title": "Risk of Chemotherapy Toxicity in Older Patients With Blood Cancer or Non-small Cell Lung Cancer",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Hematopoietic and Lymphoid Cell Neoplasm",
        "Lung Non-Small Cell Carcinoma"
      ],
      "interventions": [
        {
          "name": "Biospecimen Collection",
          "type": "PROCEDURE"
        },
        {
          "name": "Cognitive Assessment",
          "type": "PROCEDURE"
        },
        {
          "name": "Physical Performance Testing",
          "type": "OTHER"
        },
        {
          "name": "Quality-of-Life Assessment",
          "type": "OTHER"
        },
        {
          "name": "Questionnaire Administration",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "PROCEDURE",
        "OTHER"
      ],
      "sponsor": "Ohio State University Comprehensive Cancer Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "60 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "60 Years and older"
      },
      "enrollment_count": 182,
      "start_date": "2018-09-04",
      "completion_date": "2021-09-22",
      "has_results": false,
      "last_update_posted_date": "2026-04-13",
      "last_synced_at": "2026-09-26T00:10:12.853Z",
      "location_count": 1,
      "location_summary": "Columbus, Ohio",
      "locations": [
        {
          "city": "Columbus",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05106374"
    },
    {
      "nct_id": "NCT05820932",
      "title": "Predicting Cognitive Decline From Androgen Deprivation Therapy",
      "overall_status": "TERMINATED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Prostate Cancer"
      ],
      "interventions": [
        {
          "name": "Blood-based assay",
          "type": "GENETIC"
        },
        {
          "name": "Cognitive assessments",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Quality of Life Surveys",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "GENETIC",
        "DIAGNOSTIC_TEST",
        "OTHER"
      ],
      "sponsor": "University of California, San Francisco",
      "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": 32,
      "start_date": "2023-05-22",
      "completion_date": "2026-04-30",
      "has_results": false,
      "last_update_posted_date": "2026-05-07",
      "last_synced_at": "2026-09-26T00:10:12.853Z",
      "location_count": 1,
      "location_summary": "San Francisco, California",
      "locations": [
        {
          "city": "San Francisco",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05820932"
    },
    {
      "nct_id": "NCT03014544",
      "title": "Study to Evaluate the Performance Validity and Test-Retest Reliability of a Computer-Administered Cognitive Test Battery in Participants With Major Depressive Disorder (MDD)",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Depressive Disorder, Major"
      ],
      "interventions": [
        {
          "name": "Computer- administered test battery",
          "type": "DEVICE"
        },
        {
          "name": "Examiner- administered test battery",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Janssen Research & Development, LLC",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "59 Years",
        "sex": "ALL",
        "summary": "18 Years to 59 Years"
      },
      "enrollment_count": 585,
      "start_date": "2016-10-26",
      "completion_date": "2019-04-08",
      "has_results": false,
      "last_update_posted_date": "2025-04-27",
      "last_synced_at": "2026-09-26T00:10:12.853Z",
      "location_count": 20,
      "location_summary": "Birmingham, Alabama • Anaheim, California • Beverly Hills, California + 17 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Anaheim",
          "state": "California"
        },
        {
          "city": "Beverly Hills",
          "state": "California"
        },
        {
          "city": "Glendale",
          "state": "California"
        },
        {
          "city": "Long Beach",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03014544"
    },
    {
      "nct_id": "NCT03059563",
      "title": "Dopamine D2/D3 Receptor Upregulation by Varenicline in Methamphetamine Users",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Dopamine D2/3 Receptor Availability",
        "Cognitive Function",
        "Methamphetamine Abuse"
      ],
      "interventions": [
        {
          "name": "Varenicline",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "University of California, Los Angeles",
      "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": 62,
      "start_date": "2018-01-11",
      "completion_date": "2023-09-28",
      "has_results": false,
      "last_update_posted_date": "2024-05-08",
      "last_synced_at": "2026-09-26T00:10:12.853Z",
      "location_count": 1,
      "location_summary": "Los Angeles, California",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03059563"
    },
    {
      "nct_id": "NCT00556764",
      "title": "Development of Cognitive Assessment Tools in Parkinson Disease",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "EARLY_PHASE1"
      ],
      "conditions": [
        "Parkinson Disease"
      ],
      "interventions": [
        {
          "name": "[123I] IBVM and SPECT imaging",
          "type": "DRUG"
        },
        {
          "name": "Subjects will undergo the 123-I IBVM imaging visit",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Institute for Neurodegenerative Disorders",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "30 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "30 Years and older"
      },
      "enrollment_count": 75,
      "start_date": "2007-07",
      "completion_date": "2011-03",
      "has_results": false,
      "last_update_posted_date": "2012-02-09",
      "last_synced_at": "2026-09-26T00:10:12.853Z",
      "location_count": 1,
      "location_summary": "New Haven, Connecticut",
      "locations": [
        {
          "city": "New Haven",
          "state": "Connecticut"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00556764"
    },
    {
      "nct_id": "NCT02358343",
      "title": "A Trial of Sertraline vs. CBT for End-stage Renal Disease Patients With Depression {ASCEND}",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Depression",
        "End Stage Renal Disease"
      ],
      "interventions": [
        {
          "name": "Engagement Interview",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Cognitive Behavioral Therapy",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Antidepressant Drug Therapy",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL",
        "DRUG"
      ],
      "sponsor": "University of Washington",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "21 Years and older"
      },
      "enrollment_count": 184,
      "start_date": "2015-03-23",
      "completion_date": "2017-12-15",
      "has_results": true,
      "last_update_posted_date": "2019-07-23",
      "last_synced_at": "2026-09-26T00:10:12.853Z",
      "location_count": 3,
      "location_summary": "Albuquerque, New Mexico • Dallas, Texas • Seattle, Washington",
      "locations": [
        {
          "city": "Albuquerque",
          "state": "New Mexico"
        },
        {
          "city": "Dallas",
          "state": "Texas"
        },
        {
          "city": "Seattle",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02358343"
    }
  ]
}