{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Mail-based",
    "query": {
      "intervention": "Mail-based"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 400,
    "total_pages": 40,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Mail-based&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-02T15:46:54.203Z",
  "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": "NCT02582918",
      "title": "Texas Hepatocellular Carcinoma Consortium (THCCC) Project 5",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Carcinoma, Hepatocellular",
        "Liver Neoplasms"
      ],
      "interventions": [
        {
          "name": "Outreach with patient education and patient navigation services",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Texas Southwestern Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "21 Years and older"
      },
      "enrollment_count": 2871,
      "start_date": "2018-03-26",
      "completion_date": "2022-06-30",
      "has_results": false,
      "last_update_posted_date": "2022-09-28",
      "last_synced_at": "2026-09-02T15:46:54.203Z",
      "location_count": 1,
      "location_summary": "Dallas, Texas",
      "locations": [
        {
          "city": "Dallas",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02582918"
    },
    {
      "nct_id": "NCT01585610",
      "title": "Motivating Smokers With Mobility Impairments to Quit Smoking",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Smoking"
      ],
      "interventions": [
        {
          "name": "DVD Intervention",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Standard Care Printed Materials",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "The Miriam Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 560,
      "start_date": "2012-09",
      "completion_date": "2016-05",
      "has_results": false,
      "last_update_posted_date": "2015-05-14",
      "last_synced_at": "2026-09-02T15:46:54.203Z",
      "location_count": 1,
      "location_summary": "Providence, Rhode Island",
      "locations": [
        {
          "city": "Providence",
          "state": "Rhode Island"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01585610"
    },
    {
      "nct_id": "NCT02109068",
      "title": "Lifestyle, Exercise and Nutrition Study 1",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Breast Cancer",
        "Weight Loss"
      ],
      "interventions": [
        {
          "name": "Weight Loss Counseling- Phone",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Weight Loss Counseling- In-Person",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Yale University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "75 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 75 Years · Female only"
      },
      "enrollment_count": 100,
      "start_date": "2011-01",
      "completion_date": "2014-01",
      "has_results": false,
      "last_update_posted_date": "2014-04-09",
      "last_synced_at": "2026-09-02T15:46:54.203Z",
      "location_count": 1,
      "location_summary": "New Haven, Connecticut",
      "locations": [
        {
          "city": "New Haven",
          "state": "Connecticut"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02109068"
    },
    {
      "nct_id": "NCT03959267",
      "title": "Testing a Culturally Adapted Telephone Genetic Counseling Intervention",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Breast Cancer",
        "Hereditary Breast Cancer"
      ],
      "interventions": [
        {
          "name": "Telephone Genetic Counseling",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Georgetown University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": "90 Years",
        "sex": "FEMALE",
        "summary": "21 Years to 90 Years · Female only"
      },
      "enrollment_count": 37,
      "start_date": "2017-07-07",
      "completion_date": "2021-01-30",
      "has_results": false,
      "last_update_posted_date": "2021-09-01",
      "last_synced_at": "2026-09-02T15:46:54.203Z",
      "location_count": 4,
      "location_summary": "Washington D.C., District of Columbia • Hackensack, New Jersey • Alexandria, Virginia + 1 more",
      "locations": [
        {
          "city": "Washington D.C.",
          "state": "District of Columbia"
        },
        {
          "city": "Hackensack",
          "state": "New Jersey"
        },
        {
          "city": "Alexandria",
          "state": "Virginia"
        },
        {
          "city": "Richmond",
          "state": "Virginia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03959267"
    },
    {
      "nct_id": "NCT02688621",
      "title": "Internet Assisted Obesity Treatment Enhanced With Financial Incentives",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Obesity"
      ],
      "interventions": [
        {
          "name": "Internet Only",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Internet + Incentives",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Vermont",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 418,
      "start_date": "2016-04-11",
      "completion_date": "2019-08-02",
      "has_results": true,
      "last_update_posted_date": "2021-10-29",
      "last_synced_at": "2026-09-02T15:46:54.203Z",
      "location_count": 2,
      "location_summary": "Columbia, South Carolina • Burlington, Vermont",
      "locations": [
        {
          "city": "Columbia",
          "state": "South Carolina"
        },
        {
          "city": "Burlington",
          "state": "Vermont"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02688621"
    },
    {
      "nct_id": "NCT01277367",
      "title": "Vitality Health Incentives for Physical Activity",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Obesity"
      ],
      "interventions": [
        {
          "name": "Discovery Vitality base program",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Communication",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Charitable Incentive",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Prize Draw Incentive",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Direct Payment",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Free Choice",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Pennsylvania",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 0,
      "start_date": "2010-05",
      "completion_date": "2013-02",
      "has_results": false,
      "last_update_posted_date": "2016-08-19",
      "last_synced_at": "2026-09-02T15:46:54.203Z",
      "location_count": 2,
      "location_summary": "Philadelphia, Pennsylvania • Pittsburgh, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        },
        {
          "city": "Pittsburgh",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01277367"
    },
    {
      "nct_id": "NCT04498130",
      "title": "Feasibility of a Novel, Theory Based Physical Activity Intervention Among Adult Cancer Survivors",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Cancer Survivors",
        "Exercise",
        "Sedentary Behavior"
      ],
      "interventions": [
        {
          "name": "12-Week Home Exercise Group",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Education Comparison Group",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Illinois at Urbana-Champaign",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "30 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "30 Years to 75 Years"
      },
      "enrollment_count": 29,
      "start_date": "2021-10-02",
      "completion_date": "2022-12-31",
      "has_results": false,
      "last_update_posted_date": "2023-01-31",
      "last_synced_at": "2026-09-02T15:46:54.203Z",
      "location_count": 1,
      "location_summary": "Urbana, Illinois",
      "locations": [
        {
          "city": "Urbana",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04498130"
    },
    {
      "nct_id": "NCT06666192",
      "title": "The Ohio State University (OSU) SCREEN Community Program",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Breast Carcinoma",
        "Cervical Carcinoma",
        "Colorectal Carcinoma"
      ],
      "interventions": [
        {
          "name": "Cancer Screening",
          "type": "OTHER"
        },
        {
          "name": "Discussion",
          "type": "OTHER"
        },
        {
          "name": "Educational Activity",
          "type": "OTHER"
        },
        {
          "name": "Educational Intervention",
          "type": "OTHER"
        },
        {
          "name": "Focus Group",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Health Care Delivery",
          "type": "OTHER"
        },
        {
          "name": "Health Promotion",
          "type": "OTHER"
        },
        {
          "name": "Health Promotion and Education",
          "type": "OTHER"
        },
        {
          "name": "Health Risk Assessment",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Implementation",
          "type": "PROCEDURE"
        },
        {
          "name": "Informational Intervention",
          "type": "OTHER"
        },
        {
          "name": "Internet-Based Intervention",
          "type": "OTHER"
        },
        {
          "name": "Interview",
          "type": "OTHER"
        },
        {
          "name": "Outreach",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Patient Navigation",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Survey Administration",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER",
        "BEHAVIORAL",
        "PROCEDURE"
      ],
      "sponsor": "Ohio State University Comprehensive Cancer Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 2067,
      "start_date": "2024-03-12",
      "completion_date": "2029-12-31",
      "has_results": false,
      "last_update_posted_date": "2025-12-24",
      "last_synced_at": "2026-09-02T15:46:54.203Z",
      "location_count": 1,
      "location_summary": "Columbus, Ohio",
      "locations": [
        {
          "city": "Columbus",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06666192"
    },
    {
      "nct_id": "NCT03019731",
      "title": "Behavioral Therapy for Tourette Syndrome",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Tourette Syndrome"
      ],
      "interventions": [
        {
          "name": "Therapist-directed Behavioral Therapy",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Home-based DVD Therapy",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Johns Hopkins University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "7 Years",
        "maximum_age": "13 Years",
        "sex": "ALL",
        "summary": "7 Years to 13 Years"
      },
      "enrollment_count": 51,
      "start_date": "2017-03-21",
      "completion_date": "2019-03-21",
      "has_results": false,
      "last_update_posted_date": "2021-04-01",
      "last_synced_at": "2026-09-02T15:46:54.203Z",
      "location_count": 1,
      "location_summary": "Baltimore, Maryland",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03019731"
    },
    {
      "nct_id": "NCT06055972",
      "title": "Impact of Patient-Centered Approach for Communicating Coronary Calcium on Cardiovascular Health",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Coronary Artery Disease",
        "Cardiovascular Diseases",
        "Smoking"
      ],
      "interventions": [
        {
          "name": "Educational Letter Post CT Examination",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "American College of Radiology",
      "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": 800,
      "start_date": "2023-12-19",
      "completion_date": "2025-02-02",
      "has_results": false,
      "last_update_posted_date": "2024-12-06",
      "last_synced_at": "2026-09-02T15:46:54.203Z",
      "location_count": 2,
      "location_summary": "Ann Arbor, Michigan • Seattle, Washington",
      "locations": [
        {
          "city": "Ann Arbor",
          "state": "Michigan"
        },
        {
          "city": "Seattle",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06055972"
    }
  ]
}