{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Reminder+Letter",
    "query": {
      "intervention": "Reminder Letter"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 58,
    "total_pages": 6,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Reminder+Letter&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-06T01:07:53.641Z",
  "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": "NCT00697047",
      "title": "Systems of Support (SOS) to Increase Colon Cancer Screening and Follow-up",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Colorectal Cancer"
      ],
      "interventions": [
        {
          "name": "Automated Mailing",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Automated Mailing Plus Assisted",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Auto Plus Assisted Plus Navigation",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Kaiser Permanente",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "50 Years",
        "maximum_age": "73 Years",
        "sex": "ALL",
        "summary": "50 Years to 73 Years"
      },
      "enrollment_count": 4653,
      "start_date": "2008-07",
      "completion_date": "2019-12-31",
      "has_results": false,
      "last_update_posted_date": "2020-11-03",
      "last_synced_at": "2026-09-06T01:07:53.641Z",
      "location_count": 1,
      "location_summary": "Seattle, Washington",
      "locations": [
        {
          "city": "Seattle",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00697047"
    },
    {
      "nct_id": "NCT01561326",
      "title": "Facilitating Follow-Up Adherence for Abnormal Pap Smears",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Uterine Cervical Neoplasms"
      ],
      "interventions": [
        {
          "name": "Cognitive-affective barriers counseling",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Cognitive-affective barriers counseling via brochure",
          "type": "BEHAVIORAL"
        },
        {
          "name": "standard care",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Fox Chase Cancer Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "18 Years and older · Female only"
      },
      "enrollment_count": 211,
      "start_date": "2005-05",
      "completion_date": "2011-06",
      "has_results": false,
      "last_update_posted_date": "2012-03-23",
      "last_synced_at": "2026-09-06T01:07:53.641Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01561326"
    },
    {
      "nct_id": "NCT05791942",
      "title": "UCLA Health Patient Health Maintenance Text Reminder",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Health Maintenance",
        "Diabetes",
        "Cancer"
      ],
      "interventions": [
        {
          "name": "Reminder of preventive care measures",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Persuasion via anecdote",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Behavioral: Action prompt",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of California, Los Angeles",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 10583,
      "start_date": "2023-03-23",
      "completion_date": "2024-06-30",
      "has_results": false,
      "last_update_posted_date": "2025-07-02",
      "last_synced_at": "2026-09-06T01:07:53.641Z",
      "location_count": 1,
      "location_summary": "Los Angeles, California",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05791942"
    },
    {
      "nct_id": "NCT03246438",
      "title": "Choice Architecture and Colorectal Cancer Screening Outreach",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Cancer of Colon"
      ],
      "interventions": [
        {
          "name": "Colonoscopy only",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Colonoscopy outreach + mailed FIT follow-up",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Colonoscopy + Mailed FIT outreach and follow-up",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Pennsylvania",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "50 Years",
        "maximum_age": "74 Years",
        "sex": "ALL",
        "summary": "50 Years to 74 Years"
      },
      "enrollment_count": 423,
      "start_date": "2017-11-14",
      "completion_date": "2018-07-14",
      "has_results": false,
      "last_update_posted_date": "2019-02-20",
      "last_synced_at": "2026-09-06T01:07:53.641Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03246438"
    },
    {
      "nct_id": "NCT00414817",
      "title": "Telephone-Based Program to Promote Inhaled Corticosteroid Adherence Among Individuals With Asthma",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Asthma"
      ],
      "interventions": [
        {
          "name": "Automated Phone-Based Refill Reminders",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Kaiser Permanente",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 14064,
      "start_date": "2007-06",
      "completion_date": "2009-10",
      "has_results": true,
      "last_update_posted_date": "2017-01-30",
      "last_synced_at": "2026-09-06T01:07:53.641Z",
      "location_count": 2,
      "location_summary": "Honolulu, Hawaii • Portland, Oregon",
      "locations": [
        {
          "city": "Honolulu",
          "state": "Hawaii"
        },
        {
          "city": "Portland",
          "state": "Oregon"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00414817"
    },
    {
      "nct_id": "NCT07345676",
      "title": "Colorectal Cancer Screening Outreach",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Colo-rectal Cancer"
      ],
      "interventions": [
        {
          "name": "Bundled messaging intervention",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Yale University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "45 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "45 Years to 75 Years"
      },
      "enrollment_count": 2000,
      "start_date": "2026-06-23",
      "completion_date": "2027-07",
      "has_results": false,
      "last_update_posted_date": "2026-07-07",
      "last_synced_at": "2026-09-06T01:07:53.641Z",
      "location_count": 1,
      "location_summary": "New Haven, Connecticut",
      "locations": [
        {
          "city": "New Haven",
          "state": "Connecticut"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07345676"
    },
    {
      "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": "2026-09-06T01:07:53.641Z",
      "location_count": 1,
      "location_summary": "San Francisco, California",
      "locations": [
        {
          "city": "San Francisco",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02613260"
    },
    {
      "nct_id": "NCT04395118",
      "title": "STOP HCC: Mailed HCV Treatment Outreach Program for HCC Prevention for Elevated LFTs",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Hepatitis C",
        "Hepatocellular Carcinoma"
      ],
      "interventions": [
        {
          "name": "Mailed Outreach",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Texas Southwestern Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 0,
      "start_date": "2020-08-15",
      "completion_date": "2022-01-01",
      "has_results": false,
      "last_update_posted_date": "2020-07-02",
      "last_synced_at": "2026-09-06T01:07:53.641Z",
      "location_count": 1,
      "location_summary": "Dallas, Texas",
      "locations": [
        {
          "city": "Dallas",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04395118"
    },
    {
      "nct_id": "NCT00265538",
      "title": "Implementing Evidence Based Treatment of Hypertension",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Hypertension"
      ],
      "interventions": [
        {
          "name": "Patient educational letter to engage provider in hypertension rx discussion",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Financial incentive (Arms B and C) and health educator phone call (Arm C)",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "VA Office of Research and Development",
      "sponsor_class": "FED",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "18 Years to 80 Years"
      },
      "enrollment_count": 834,
      "start_date": "2006-07",
      "completion_date": "2009-08",
      "has_results": true,
      "last_update_posted_date": "2020-03-20",
      "last_synced_at": "2026-09-06T01:07:53.641Z",
      "location_count": 2,
      "location_summary": "Iowa City, Iowa • Minneapolis, Minnesota",
      "locations": [
        {
          "city": "Iowa City",
          "state": "Iowa"
        },
        {
          "city": "Minneapolis",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00265538"
    },
    {
      "nct_id": "NCT02272244",
      "title": "Increasing Colorectal Cancer (CRC) Screening Among Hispanic Primary Care Patients",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Colorectal Cancer"
      ],
      "interventions": [
        {
          "name": "Decision Support & Navigation",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Standard",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Thomas Jefferson University",
      "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": 400,
      "start_date": "2014-10-01",
      "completion_date": "2017-03-31",
      "has_results": true,
      "last_update_posted_date": "2025-05-04",
      "last_synced_at": "2026-09-06T01:07:53.641Z",
      "location_count": 3,
      "location_summary": "Allentown, Pennsylvania • Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Allentown",
          "state": "Pennsylvania"
        },
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        },
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02272244"
    }
  ]
}