{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Letter&page=2",
    "query": {
      "intervention": "Letter",
      "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=Letter&page=1&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-09-02T06:09:32.982Z",
  "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": "NCT05087576",
      "title": "Chinese American Family Caregiver Writing Study",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Mental Health Issue"
      ],
      "interventions": [
        {
          "name": "Expressive Helping",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Caregiving Fact writing",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "New York University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 67,
      "start_date": "2020-10-01",
      "completion_date": "2022-09-18",
      "has_results": false,
      "last_update_posted_date": "2022-11-02",
      "last_synced_at": "2026-09-02T06:09:32.982Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05087576"
    },
    {
      "nct_id": "NCT04710940",
      "title": "Development and Feasibility Testing of DM-BOOST Intervention.",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Diabetes Mellitus, Type 2"
      ],
      "interventions": [
        {
          "name": "Diabetes BOOST",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Usual Care",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Daniel Amante",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 66,
      "start_date": "2021-01-13",
      "completion_date": "2024-01-01",
      "has_results": false,
      "last_update_posted_date": "2024-02-22",
      "last_synced_at": "2026-09-02T06:09:32.982Z",
      "location_count": 1,
      "location_summary": "Worcester, Massachusetts",
      "locations": [
        {
          "city": "Worcester",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04710940"
    },
    {
      "nct_id": "NCT05513274",
      "title": "Heartache and Backache- An Online Intervention Addressing Emotional and Physical Pain",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Chronic Pain (Back / Neck)"
      ],
      "interventions": [
        {
          "name": "Pain Psychology Neuroscience + Written Emotional Disclosure",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Pain Psychology Neuroscience + Healthy Habits Disclosure",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Health Behavior Control + Written Emotional Disclosure",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Health Behavior Control + Healthy Habits Disclosure",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Wayne State University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "18 Years to 75 Years"
      },
      "enrollment_count": 107,
      "start_date": "2022-12-15",
      "completion_date": "2024-12-30",
      "has_results": false,
      "last_update_posted_date": "2025-07-16",
      "last_synced_at": "2026-09-02T06:09:32.982Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05513274"
    },
    {
      "nct_id": "NCT02458690",
      "title": "eIMPACT Trial: Modernized Collaborative Care to Reduce the Excess CVD Risk of Older Depressed Patients",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Depression",
        "Major Depressive Disorder",
        "Dysthymic Disorder",
        "Depressive Symptoms",
        "Cardiovascular Diseases",
        "Heart Diseases",
        "Coronary Artery Disease",
        "Stroke"
      ],
      "interventions": [
        {
          "name": "Beating the Blues (BtB)",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Problem Solving Treatment in Primary Care (PST-PC)",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Antidepressant Medications",
          "type": "DRUG"
        },
        {
          "name": "Usual Care",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL",
        "DRUG",
        "OTHER"
      ],
      "sponsor": "Indiana University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "50 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "50 Years and older"
      },
      "enrollment_count": 216,
      "start_date": "2015-07",
      "completion_date": "2021-03",
      "has_results": true,
      "last_update_posted_date": "2023-10-19",
      "last_synced_at": "2026-09-02T06:09:32.982Z",
      "location_count": 1,
      "location_summary": "Indianapolis, Indiana",
      "locations": [
        {
          "city": "Indianapolis",
          "state": "Indiana"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02458690"
    },
    {
      "nct_id": "NCT01384045",
      "title": "Outreach for Diabetes Cure",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Type II Diabetes"
      ],
      "interventions": [
        {
          "name": "Health promotion outreach",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Colorado, Denver",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 2800,
      "start_date": "2009-02",
      "completion_date": "2011-06",
      "has_results": false,
      "last_update_posted_date": "2012-12-18",
      "last_synced_at": "2026-09-02T06:09:32.982Z",
      "location_count": 1,
      "location_summary": "Aurora, Colorado",
      "locations": [
        {
          "city": "Aurora",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01384045"
    },
    {
      "nct_id": "NCT01977495",
      "title": "Take Charge of Your Diabetes",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Diabetes",
        "Hypertension"
      ],
      "interventions": [
        {
          "name": "Financial Incentive: Fixed Lottery",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Pennsylvania",
      "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": 136,
      "start_date": "2013-12",
      "completion_date": "2014-08",
      "has_results": false,
      "last_update_posted_date": "2015-12-09",
      "last_synced_at": "2026-09-02T06:09:32.982Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01977495"
    },
    {
      "nct_id": "NCT02613260",
      "title": "Mailed FIT Outreach to Improve Colon Cancer Screening in the Safety-net System",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Colonic Neoplasms"
      ],
      "interventions": [
        {
          "name": "FIT Outreach",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of California, San Francisco",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "50 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "50 Years to 75 Years"
      },
      "enrollment_count": 13470,
      "start_date": "2016-01-01",
      "completion_date": "2019-01-01",
      "has_results": false,
      "last_update_posted_date": "2019-08-09",
      "last_synced_at": "2026-09-02T06:09:32.982Z",
      "location_count": 1,
      "location_summary": "San Francisco, California",
      "locations": [
        {
          "city": "San Francisco",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02613260"
    },
    {
      "nct_id": "NCT03712553",
      "title": "Behavioral Science and Hepatitis C Screening Outreach",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Hepatitis C"
      ],
      "interventions": [
        {
          "name": "Opt-Out",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Letter",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Behavioral Economic Messaging",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Usual Care Messaging",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Pennsylvania",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "53 Years",
        "maximum_age": "73 Years",
        "sex": "ALL",
        "summary": "53 Years to 73 Years"
      },
      "enrollment_count": 21493,
      "start_date": "2019-03-15",
      "completion_date": "2020-10-15",
      "has_results": false,
      "last_update_posted_date": "2020-12-01",
      "last_synced_at": "2026-09-02T06:09:32.982Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03712553"
    },
    {
      "nct_id": "NCT04581369",
      "title": "Cirrhosis Medical Home",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Cirrhosis, Liver"
      ],
      "interventions": [
        {
          "name": "Care Coordinator Intervention for Direct Intervention Group",
          "type": "OTHER"
        },
        {
          "name": "Care Coordinator Intervention for Standard of Care Group",
          "type": "OTHER"
        },
        {
          "name": "Caregiver Intervention",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Indiana University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 44,
      "start_date": "2020-09-17",
      "completion_date": "2023-05-31",
      "has_results": true,
      "last_update_posted_date": "2024-07-17",
      "last_synced_at": "2026-09-02T06:09:32.982Z",
      "location_count": 1,
      "location_summary": "Indianapolis, Indiana",
      "locations": [
        {
          "city": "Indianapolis",
          "state": "Indiana"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04581369"
    },
    {
      "nct_id": "NCT00501449",
      "title": "Psychosocial Aspects of Multiple Endocrine Neoplasia (MEN) Syndromes",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Multiple Endocrine Neoplasia"
      ],
      "interventions": [
        {
          "name": "Questionnaire",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "M.D. Anderson 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": 133,
      "start_date": "2007-05",
      "completion_date": "2020-09-22",
      "has_results": false,
      "last_update_posted_date": "2020-11-18",
      "last_synced_at": "2026-09-02T06:09:32.982Z",
      "location_count": 1,
      "location_summary": "Houston, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00501449"
    }
  ]
}