{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=telephone+counseling+%28TC%29",
    "query": {
      "intervention": "telephone counseling (TC)"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 6,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-10-06T18:09:42.584Z",
  "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": "NCT01123967",
      "title": "Offering Proactive Tobacco Treatment",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Tobacco Use Cessation"
      ],
      "interventions": [
        {
          "name": "proactive outreach (PRO)",
          "type": "OTHER"
        },
        {
          "name": "telephone counseling (TC)",
          "type": "OTHER"
        },
        {
          "name": "Nicotine replacement therapy (NRT)",
          "type": "OTHER"
        },
        {
          "name": "Usual care (UC)",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Minnesota",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "64 Years",
        "sex": "ALL",
        "summary": "18 Years to 64 Years"
      },
      "enrollment_count": 2500,
      "start_date": "2011-02",
      "completion_date": "2014-08",
      "has_results": false,
      "last_update_posted_date": "2015-05-27",
      "last_synced_at": "2026-10-06T18:09:42.584Z",
      "location_count": 1,
      "location_summary": "Minneapolis, Minnesota",
      "locations": [
        {
          "city": "Minneapolis",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01123967"
    },
    {
      "nct_id": "NCT01723163",
      "title": "Abstinence Reinforcement Therapy (ART) for Rural Veteran Smokers",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Veteran",
        "Smoking Cessation"
      ],
      "interventions": [
        {
          "name": "Abstinence Reinforcement Therapy (ART)",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Telephone Counseling and NRT",
          "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": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 310,
      "start_date": "2013-11-21",
      "completion_date": "2017-09",
      "has_results": true,
      "last_update_posted_date": "2019-03-01",
      "last_synced_at": "2026-10-06T18:09:42.584Z",
      "location_count": 1,
      "location_summary": "Durham, North Carolina",
      "locations": [
        {
          "city": "Durham",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01723163"
    },
    {
      "nct_id": "NCT00217919",
      "title": "Reducing Risk Factors in Peripheral Arterial Disease",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Cardiovascular Diseases",
        "Peripheral Vascular Diseases"
      ],
      "interventions": [
        {
          "name": "Health-Counselor Mediated Telephone Counseling Intervention",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Northwestern University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "21 Years and older"
      },
      "enrollment_count": 355,
      "start_date": "2006-02",
      "completion_date": "2009-11",
      "has_results": false,
      "last_update_posted_date": "2014-04-09",
      "last_synced_at": "2026-10-06T18:09:42.584Z",
      "location_count": 2,
      "location_summary": "Chicago, Illinois • Worcester, Massachusetts",
      "locations": [
        {
          "city": "Chicago",
          "state": "Illinois"
        },
        {
          "city": "Worcester",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00217919"
    },
    {
      "nct_id": "NCT00146679",
      "title": "Psychoeducational Intervention for ICD Patients (PEACE)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Heart Failure",
        "Ventricular Arrhythmias"
      ],
      "interventions": [
        {
          "name": "Psychoeducational Telephone counseling (TC)",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Psychoeducational Intervention by Group (SG)",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Usual Care",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Emory University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "21 Years to 75 Years"
      },
      "enrollment_count": 246,
      "start_date": "2001-03",
      "completion_date": "2006-02",
      "has_results": false,
      "last_update_posted_date": "2013-09-10",
      "last_synced_at": "2026-10-06T18:09:42.584Z",
      "location_count": 5,
      "location_summary": "Atlanta, Georgia • Decatur, Georgia",
      "locations": [
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "Decatur",
          "state": "Georgia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00146679"
    },
    {
      "nct_id": "NCT02267096",
      "title": "Lombardi Comprehensive Cancer Center/Legacy Pilot Study to Reduce Adverse Smoking Outcomes in the Context of Lung Cancer Screening",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Smoking",
        "Lung Cancer"
      ],
      "interventions": [
        {
          "name": "Telephone Counseling",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Minimal Treatment",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Georgetown University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "55 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "55 Years to 80 Years"
      },
      "enrollment_count": 95,
      "start_date": "2014-01",
      "completion_date": "2016-08",
      "has_results": false,
      "last_update_posted_date": "2016-10-19",
      "last_synced_at": "2026-10-06T18:09:42.584Z",
      "location_count": 3,
      "location_summary": "Washington D.C., District of Columbia • Burlington, Massachusetts • Hackensack, New Jersey",
      "locations": [
        {
          "city": "Washington D.C.",
          "state": "District of Columbia"
        },
        {
          "city": "Burlington",
          "state": "Massachusetts"
        },
        {
          "city": "Hackensack",
          "state": "New Jersey"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02267096"
    },
    {
      "nct_id": "NCT00634218",
      "title": "Reaching and Treating Lesbian, Gay, Bisexual, and Transgender (LGBT) Cigarette Smokers",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2",
        "PHASE3"
      ],
      "conditions": [
        "Cigarette Smoking"
      ],
      "interventions": [
        {
          "name": "Mail-based Self-help plus Internet-based Smoking Treatment",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Self-Help Manual plus Telephone counseling",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Self-Help Manual",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Self-Help Manual plus Internet-based Intervention plus Telephone Counseling",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of California, San Francisco",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 363,
      "start_date": "2008-02",
      "completion_date": "2012-01",
      "has_results": false,
      "last_update_posted_date": "2012-06-27",
      "last_synced_at": "2026-10-06T18:09:42.584Z",
      "location_count": 1,
      "location_summary": "San Francisco, California",
      "locations": [
        {
          "city": "San Francisco",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00634218"
    }
  ]
}