{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Letter",
    "query": {
      "intervention": "Letter"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 441,
    "total_pages": 45,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Letter&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-01T23:47:00.788Z",
  "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": "NCT03300180",
      "title": "Caregiver Outcomes of Alzheimer's Disease Screening",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Alzheimer Disease"
      ],
      "interventions": [
        {
          "name": "Collaborative Dementia Care Program",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Screening Only",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL",
        "OTHER"
      ],
      "sponsor": "Indiana University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "65 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "65 Years and older"
      },
      "enrollment_count": 1822,
      "start_date": "2018-10-15",
      "completion_date": "2023-09-30",
      "has_results": true,
      "last_update_posted_date": "2025-05-02",
      "last_synced_at": "2026-09-01T23:47:00.788Z",
      "location_count": 2,
      "location_summary": "Indianapolis, Indiana",
      "locations": [
        {
          "city": "Indianapolis",
          "state": "Indiana"
        },
        {
          "city": "Indianapolis",
          "state": "Indiana"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03300180"
    },
    {
      "nct_id": "NCT00101868",
      "title": "Value of Technology to Transfer Discharge Information",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Information Dissemination",
        "Interprofessional Relations"
      ],
      "interventions": [
        {
          "name": "Discharge communication software",
          "type": "DEVICE"
        },
        {
          "name": "Usual care discharge process",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DEVICE",
        "OTHER"
      ],
      "sponsor": "Agency for Healthcare Research and Quality (AHRQ)",
      "sponsor_class": "FED",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 631,
      "start_date": "2004-12",
      "completion_date": "2007-08",
      "has_results": true,
      "last_update_posted_date": "2012-05-15",
      "last_synced_at": "2026-09-01T23:47:00.788Z",
      "location_count": 1,
      "location_summary": "Peoria, Illinois",
      "locations": [
        {
          "city": "Peoria",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00101868"
    },
    {
      "nct_id": "NCT06152094",
      "title": "UCSF BP Activate Letter Study",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Hypertension"
      ],
      "interventions": [
        {
          "name": "BP Activate Letter",
          "type": "OTHER"
        },
        {
          "name": "Control Letter",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of California, San Francisco",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 484,
      "start_date": "2023-07-20",
      "completion_date": "2024-12-31",
      "has_results": false,
      "last_update_posted_date": "2025-01-28",
      "last_synced_at": "2026-09-01T23:47:00.788Z",
      "location_count": 1,
      "location_summary": "San Francisco, California",
      "locations": [
        {
          "city": "San Francisco",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06152094"
    },
    {
      "nct_id": "NCT06638554",
      "title": "Integrating Telehealth to Advance Lung Cancer Screening",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Early Detection of Cancer",
        "Telemedicine",
        "Decision Making"
      ],
      "interventions": [
        {
          "name": "Active Choice",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Telehealth Only",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Low Touch Strategy",
          "type": "BEHAVIORAL"
        },
        {
          "name": "High Touch Strategy",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Abramson Cancer Center at Penn Medicine",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "50 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "50 Years to 80 Years"
      },
      "enrollment_count": 6000,
      "start_date": "2024-07-09",
      "completion_date": "2027-06-30",
      "has_results": false,
      "last_update_posted_date": "2026-05-29",
      "last_synced_at": "2026-09-01T23:47:00.788Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06638554"
    },
    {
      "nct_id": "NCT03101553",
      "title": "Computerized Treatment for Social Anxiety",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Social Anxiety Disorder"
      ],
      "interventions": [
        {
          "name": "Interpretation Bias Modification",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Progressive Muscle Relaxation",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Florida State University",
      "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": 65,
      "start_date": "2017-02-10",
      "completion_date": "2017-11-01",
      "has_results": false,
      "last_update_posted_date": "2021-01-29",
      "last_synced_at": "2026-09-01T23:47:00.788Z",
      "location_count": 1,
      "location_summary": "Tallahassee, Florida",
      "locations": [
        {
          "city": "Tallahassee",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03101553"
    },
    {
      "nct_id": "NCT04941300",
      "title": "ColoRectal Cancer Screening for Southern California Community Health Centers",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Colorectal Cancer"
      ],
      "interventions": [
        {
          "name": "Mailed FIT Outreach",
          "type": "OTHER"
        },
        {
          "name": "Standardized navigation",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of California, San Diego",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "50 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "50 Years to 75 Years"
      },
      "enrollment_count": 55999,
      "start_date": "2021-06-08",
      "completion_date": "2024-08-31",
      "has_results": false,
      "last_update_posted_date": "2025-08-26",
      "last_synced_at": "2026-09-01T23:47:00.788Z",
      "location_count": 1,
      "location_summary": "La Jolla, California",
      "locations": [
        {
          "city": "La Jolla",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04941300"
    },
    {
      "nct_id": "NCT05405972",
      "title": "A Behavioral Intervention With Foster Families",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Family Relationship",
        "Sibling Relations",
        "Behavior, Social"
      ],
      "interventions": [
        {
          "name": "The Connected Family Series - For Foster Families",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Arizona",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "7 Years",
        "maximum_age": "85 Years",
        "sex": "ALL",
        "summary": "7 Years to 85 Years"
      },
      "enrollment_count": 95,
      "start_date": "2022-05-15",
      "completion_date": "2023-11-30",
      "has_results": false,
      "last_update_posted_date": "2024-05-03",
      "last_synced_at": "2026-09-01T23:47:00.788Z",
      "location_count": 1,
      "location_summary": "Tucson, Arizona",
      "locations": [
        {
          "city": "Tucson",
          "state": "Arizona"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05405972"
    },
    {
      "nct_id": "NCT07613853",
      "title": "The Return of Cardiovascular Information Trial (RECITE)",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Health Curiosity",
        "Cardiovascular Health Risk Communication"
      ],
      "interventions": [
        {
          "name": "Coarse health result information presentation",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Granular health risk information presentation",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Texas Southwestern Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "35 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "35 Years and older"
      },
      "enrollment_count": 1500,
      "start_date": "2026-04-22",
      "completion_date": "2028-08",
      "has_results": false,
      "last_update_posted_date": "2026-06-15",
      "last_synced_at": "2026-09-01T23:47:00.788Z",
      "location_count": 1,
      "location_summary": "Dallas, Texas",
      "locations": [
        {
          "city": "Dallas",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07613853"
    },
    {
      "nct_id": "NCT03582566",
      "title": "Training Language and Literacy for Children Who Use CIs",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Hearing Loss, Sensorineural"
      ],
      "interventions": [
        {
          "name": "Phonological Awareness",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Working Memory",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Phonological Awareness + Working Memory",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Active Control",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Florida State University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "5 Years",
        "maximum_age": "7 Years",
        "sex": "ALL",
        "summary": "5 Years to 7 Years"
      },
      "enrollment_count": 87,
      "start_date": "2016-07-01",
      "completion_date": "2023-06",
      "has_results": false,
      "last_update_posted_date": "2023-07-13",
      "last_synced_at": "2026-09-01T23:47:00.788Z",
      "location_count": 2,
      "location_summary": "Tallahassee, Florida • Evanston, Illinois",
      "locations": [
        {
          "city": "Tallahassee",
          "state": "Florida"
        },
        {
          "city": "Evanston",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03582566"
    },
    {
      "nct_id": "NCT02225028",
      "title": "Feasibility of Telephone Counseling to Increase Physical Fitness in SCI",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Spinal Cord Injury"
      ],
      "interventions": [
        {
          "name": "Physical Activity Counseling",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Washington",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "70 Years",
        "sex": "ALL",
        "summary": "18 Years to 70 Years"
      },
      "enrollment_count": 15,
      "start_date": "2014-11",
      "completion_date": "2016-09",
      "has_results": false,
      "last_update_posted_date": "2017-05-05",
      "last_synced_at": "2026-09-01T23:47:00.788Z",
      "location_count": 2,
      "location_summary": "Seattle, Washington",
      "locations": [
        {
          "city": "Seattle",
          "state": "Washington"
        },
        {
          "city": "Seattle",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02225028"
    }
  ]
}