{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Information+Letter&page=2",
    "query": {
      "intervention": "Information 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=Information+Letter&page=1&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-09-26T02:43:44.577Z",
  "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": "NCT01251419",
      "title": "The Impact of Social Proximity on Conversion to Generic Prescription Medications",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Conversion From Brand Name to Generic Medication"
      ],
      "interventions": [
        {
          "name": "Social Proximity and Conversion to Generic Medications",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "National Bureau of Economic Research, Inc.",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 10000,
      "start_date": "2011-03",
      "completion_date": "2012-05",
      "has_results": false,
      "last_update_posted_date": "2012-05-18",
      "last_synced_at": "2026-09-26T02:43:44.577Z",
      "location_count": 1,
      "location_summary": "St Louis, Missouri",
      "locations": [
        {
          "city": "St Louis",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01251419"
    },
    {
      "nct_id": "NCT05000619",
      "title": "Encouraging Overdue Healthcare Appointment Scheduling Among Patients With Chronic Diseases",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Health Promotion",
        "Prevention",
        "Risk Reduction Behavior"
      ],
      "interventions": [
        {
          "name": "Outreach mailer",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Humor/Salience",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Doctor's authority",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Information",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Geisinger Clinic",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 21562,
      "start_date": "2021-07-12",
      "completion_date": "2022-08-26",
      "has_results": false,
      "last_update_posted_date": "2022-12-01",
      "last_synced_at": "2026-09-26T02:43:44.577Z",
      "location_count": 1,
      "location_summary": "Danville, Pennsylvania",
      "locations": [
        {
          "city": "Danville",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05000619"
    },
    {
      "nct_id": "NCT06065527",
      "title": "Future Planning and Well-Being for Individuals With Intellectual Disabilities and Family Caregivers",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Intellectual Disability"
      ],
      "interventions": [
        {
          "name": "Map Our Life",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Attention Control",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Northwell Health",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 1050,
      "start_date": "2023-12-22",
      "completion_date": "2029-04-30",
      "has_results": false,
      "last_update_posted_date": "2024-01-03",
      "last_synced_at": "2026-09-26T02:43:44.577Z",
      "location_count": 1,
      "location_summary": "New Hyde Park, New York",
      "locations": [
        {
          "city": "New Hyde Park",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06065527"
    },
    {
      "nct_id": "NCT01568151",
      "title": "Testing Interventions to Motivate and Educate",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Colorectal Cancer"
      ],
      "interventions": [
        {
          "name": "Clinic-directed intervention program",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Individual Patient-Directed Program",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Ohio State University Comprehensive Cancer Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "50 Years",
        "maximum_age": "85 Years",
        "sex": "ALL",
        "summary": "50 Years to 85 Years"
      },
      "enrollment_count": 551,
      "start_date": "2009-04",
      "completion_date": "2013-12-31",
      "has_results": false,
      "last_update_posted_date": "2020-04-28",
      "last_synced_at": "2026-09-26T02:43:44.577Z",
      "location_count": 1,
      "location_summary": "Columbus, Ohio",
      "locations": [
        {
          "city": "Columbus",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01568151"
    },
    {
      "nct_id": "NCT03329066",
      "title": "Sleep Quality in High School Students With Asthma - II",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Asthma",
        "Sleep",
        "Asthma in Children"
      ],
      "interventions": [
        {
          "name": "MAST - Managing Asthma & Sleep in Teens",
          "type": "BEHAVIORAL"
        },
        {
          "name": "ASMA - Asthma Self-Management for Adol",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Information & Referral Control Group",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Columbia University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "13 Years",
        "maximum_age": "17 Years",
        "sex": "ALL",
        "summary": "13 Years to 17 Years"
      },
      "enrollment_count": 63,
      "start_date": "2018-04-09",
      "completion_date": "2019-12-12",
      "has_results": false,
      "last_update_posted_date": "2021-03-04",
      "last_synced_at": "2026-09-26T02:43:44.577Z",
      "location_count": 2,
      "location_summary": "New York, New York • Providence, Rhode Island",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        },
        {
          "city": "Providence",
          "state": "Rhode Island"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03329066"
    },
    {
      "nct_id": "NCT04593472",
      "title": "SHARE: Sharing Healthcare Wishes in Primary Care",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Cognitive Impairment"
      ],
      "interventions": [
        {
          "name": "Sharing Healthcare Wishes in Primary Care (SHARE)",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Minimally Enhanced Usual Care",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Johns Hopkins University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "80 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "80 Years and older"
      },
      "enrollment_count": 273,
      "start_date": "2020-10-21",
      "completion_date": "2025-02-26",
      "has_results": true,
      "last_update_posted_date": "2026-05-14",
      "last_synced_at": "2026-09-26T02:43:44.577Z",
      "location_count": 9,
      "location_summary": "Baltimore, Maryland • Dundalk, Maryland • Mitchellville, Maryland + 3 more",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        },
        {
          "city": "Baltimore",
          "state": "Maryland"
        },
        {
          "city": "Baltimore",
          "state": "Maryland"
        },
        {
          "city": "Baltimore",
          "state": "Maryland"
        },
        {
          "city": "Dundalk",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04593472"
    },
    {
      "nct_id": "NCT01014312",
      "title": "Treatment for Depressed Primary Care Patients",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Depression"
      ],
      "interventions": [
        {
          "name": "Depression Care Management (DCM)",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Enhanced Care",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Weill Medical College of Cornell University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "60 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "60 Years and older"
      },
      "enrollment_count": 11,
      "start_date": "2009-09-01",
      "completion_date": "2015-04-30",
      "has_results": false,
      "last_update_posted_date": "2017-02-23",
      "last_synced_at": "2026-09-26T02:43:44.577Z",
      "location_count": 1,
      "location_summary": "White Plains, New York",
      "locations": [
        {
          "city": "White Plains",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01014312"
    },
    {
      "nct_id": "NCT00582829",
      "title": "Colorectal Cancer Screening Intervention for Family Members of Colorectal Cancer Patients",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Colorectal",
        "Cancer",
        "Screening",
        "Intervention"
      ],
      "interventions": [
        {
          "name": "Generic Print Intervention",
          "type": "OTHER"
        },
        {
          "name": "Tailored Print Intervention",
          "type": "OTHER"
        },
        {
          "name": "Tailored print plus tailored phone intervention",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Memorial Sloan Kettering Cancer Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "40 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "40 Years and older"
      },
      "enrollment_count": 213,
      "start_date": "2003-06",
      "completion_date": "2008-05",
      "has_results": false,
      "last_update_posted_date": "2008-11-07",
      "last_synced_at": "2026-09-26T02:43:44.577Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00582829"
    },
    {
      "nct_id": "NCT04613440",
      "title": "FaCT Trial (Facilitated Cascade Testing Trial)",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "BRCA1 Mutation",
        "BRCA2 Mutation"
      ],
      "interventions": [
        {
          "name": "Family Letter (Standard of Care)",
          "type": "OTHER"
        },
        {
          "name": "Educational Video",
          "type": "OTHER"
        },
        {
          "name": "Mailed Saliva Kit for Genetic Testing",
          "type": "OTHER"
        },
        {
          "name": "Telephone Counseling",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Weill Medical College of Cornell University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 524,
      "start_date": "2021-07-21",
      "completion_date": "2026-09-18",
      "has_results": false,
      "last_update_posted_date": "2026-06-30",
      "last_synced_at": "2026-09-26T02:43:44.577Z",
      "location_count": 3,
      "location_summary": "New York, New York • Durham, North Carolina • Houston, Texas",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        },
        {
          "city": "Durham",
          "state": "North Carolina"
        },
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04613440"
    },
    {
      "nct_id": "NCT03880838",
      "title": "Evaluation of a Letter Intervention Promoting a Plant-based Diet",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Cardiovascular Diseases",
        "Diabetes Mellitus",
        "Obesity"
      ],
      "interventions": [
        {
          "name": "Personal testimonial",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Forks Over Knives Documentary",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Commitment nudge",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Prevention nudge",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Geisinger Clinic",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 11234,
      "start_date": "2019-06-20",
      "completion_date": "2022-06-30",
      "has_results": true,
      "last_update_posted_date": "2025-05-20",
      "last_synced_at": "2026-09-26T02:43:44.577Z",
      "location_count": 1,
      "location_summary": "Danville, Pennsylvania",
      "locations": [
        {
          "city": "Danville",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03880838"
    }
  ]
}