{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Smokers+cease+smoking&page=4",
    "query": {
      "intervention": "Smokers cease smoking",
      "page": 4
    },
    "page_size": 10
  },
  "pagination": {
    "page": 4,
    "page_size": 10,
    "total_count": 266,
    "total_pages": 27,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Smokers+cease+smoking&page=5&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Smokers+cease+smoking&page=3&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-05T17:26:26.221Z",
  "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": "NCT03382093",
      "title": "Personalized Feedback for Smokers With Elevated Anxiety Sensitivity",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Anxiety Disorders",
        "Anxiety",
        "Tobacco Dependence",
        "Smoking, Cigarette",
        "Smoking, Tobacco"
      ],
      "interventions": [
        {
          "name": "Personalized Feedback Intervention",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Smoking Information Control",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Houston",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "18 Years to 65 Years"
      },
      "enrollment_count": 95,
      "start_date": "2017-08-23",
      "completion_date": "2019-06-01",
      "has_results": false,
      "last_update_posted_date": "2019-06-19",
      "last_synced_at": "2026-10-05T17:26:26.221Z",
      "location_count": 1,
      "location_summary": "Houston, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03382093"
    },
    {
      "nct_id": "NCT00666978",
      "title": "Health Education Counseling With or Without Bupropion in Helping African Americans Stop Smoking",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Bladder Cancer",
        "Cervical Cancer",
        "Esophageal Cancer",
        "Gastric Cancer",
        "Head and Neck Cancer",
        "Kidney Cancer",
        "Leukemia",
        "Liver Cancer",
        "Lung Cancer",
        "Pancreatic Cancer",
        "Tobacco Use Disorder"
      ],
      "interventions": [
        {
          "name": "smoking cessation intervention",
          "type": "BEHAVIORAL"
        },
        {
          "name": "bupropion hydrochloride",
          "type": "DRUG"
        },
        {
          "name": "gene expression analysis",
          "type": "GENETIC"
        },
        {
          "name": "polymerase chain reaction",
          "type": "GENETIC"
        },
        {
          "name": "counseling intervention",
          "type": "OTHER"
        },
        {
          "name": "educational intervention",
          "type": "OTHER"
        },
        {
          "name": "psychosocial assessment and care",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL",
        "DRUG",
        "GENETIC",
        "OTHER",
        "PROCEDURE"
      ],
      "sponsor": "Lisa Sanderson Cox, PhD",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 540,
      "start_date": "2007-12",
      "completion_date": "2010-06",
      "has_results": true,
      "last_update_posted_date": "2017-11-13",
      "last_synced_at": "2026-10-05T17:26:26.221Z",
      "location_count": 2,
      "location_summary": "Kansas City, Kansas • Kansas City, Missouri",
      "locations": [
        {
          "city": "Kansas City",
          "state": "Kansas"
        },
        {
          "city": "Kansas City",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00666978"
    },
    {
      "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": "2026-10-05T17:26:26.221Z",
      "location_count": 1,
      "location_summary": "San Francisco, California",
      "locations": [
        {
          "city": "San Francisco",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00634218"
    },
    {
      "nct_id": "NCT02086149",
      "title": "Exercise for Depressed Smokers",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Tobacco Smoking",
        "Smoking Cessation"
      ],
      "interventions": [
        {
          "name": "Aerobic Exercise",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Health Education",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Butler Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "18 Years to 65 Years"
      },
      "enrollment_count": 231,
      "start_date": "2014-02",
      "completion_date": "2019-02",
      "has_results": false,
      "last_update_posted_date": "2019-05-03",
      "last_synced_at": "2026-10-05T17:26:26.221Z",
      "location_count": 1,
      "location_summary": "Providence, Rhode Island",
      "locations": [
        {
          "city": "Providence",
          "state": "Rhode Island"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02086149"
    },
    {
      "nct_id": "NCT01756885",
      "title": "Extended Varenicline Treatment for Smoking Among Cancer Patients",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Nicotine Dependence"
      ],
      "interventions": [
        {
          "name": "Varenicline",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        },
        {
          "name": "Smoking Cessation Counseling",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "DRUG",
        "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": 207,
      "start_date": "2013-01",
      "completion_date": "2018-05-31",
      "has_results": true,
      "last_update_posted_date": "2019-07-30",
      "last_synced_at": "2026-10-05T17:26:26.221Z",
      "location_count": 2,
      "location_summary": "Chicago, Illinois • Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Chicago",
          "state": "Illinois"
        },
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01756885"
    },
    {
      "nct_id": "NCT01789710",
      "title": "Contingency Management for Smoking Cessation in Homeless Smokers",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Smoking",
        "Homeless Persons"
      ],
      "interventions": [
        {
          "name": "Bupropion",
          "type": "DRUG"
        },
        {
          "name": "Nicotine replacement therapy",
          "type": "DRUG"
        },
        {
          "name": "Contingency Management",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "DRUG",
        "BEHAVIORAL"
      ],
      "sponsor": "Duke University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "70 Years",
        "sex": "ALL",
        "summary": "18 Years to 70 Years"
      },
      "enrollment_count": 25,
      "start_date": "2013-01",
      "completion_date": "2014-09",
      "has_results": false,
      "last_update_posted_date": "2026-05-04",
      "last_synced_at": "2026-10-05T17:26:26.221Z",
      "location_count": 1,
      "location_summary": "Durham, North Carolina",
      "locations": [
        {
          "city": "Durham",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01789710"
    },
    {
      "nct_id": "NCT00918073",
      "title": "Evaluation of Cardiovascular Effects of Smoking Cessation in HIV Patients",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "HIV Infections",
        "Smokers"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "The University of Texas Health Science Center, Houston",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "16 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "16 Years and older"
      },
      "enrollment_count": 50,
      "start_date": "2007-11",
      "completion_date": "2013-04",
      "has_results": false,
      "last_update_posted_date": "2013-05-07",
      "last_synced_at": "2026-10-05T17:26:26.221Z",
      "location_count": 1,
      "location_summary": "Houston, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00918073"
    },
    {
      "nct_id": "NCT02050308",
      "title": "Web-based Smoking Cessation Program for Tribal College Students",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Smoking Cessation"
      ],
      "interventions": [
        {
          "name": "Internet-All Nations Breath of Life (I-ANBL)",
          "type": "OTHER"
        },
        {
          "name": "Honoring the Gift of Heart Health",
          "type": "OTHER"
        },
        {
          "name": "Nicotine gum, Patch, or Lozenge or Zyban® or Chantix®",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "OTHER",
        "DRUG"
      ],
      "sponsor": "Won Choi, PhD, MPH",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 251,
      "start_date": "2015-05",
      "completion_date": "2019-03-31",
      "has_results": true,
      "last_update_posted_date": "2021-12-07",
      "last_synced_at": "2026-10-05T17:26:26.221Z",
      "location_count": 2,
      "location_summary": "Kansas City, Kansas • Pablo, Montana",
      "locations": [
        {
          "city": "Kansas City",
          "state": "Kansas"
        },
        {
          "city": "Pablo",
          "state": "Montana"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02050308"
    },
    {
      "nct_id": "NCT02432729",
      "title": "A Smoking Cessation Study to Understand the Biological and Functional Changes After One Year of Smoking Cessation",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Cigarette Smoking"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Philip Morris Products S.A.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "30 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "30 Years to 65 Years"
      },
      "enrollment_count": 1184,
      "start_date": "2015-05-05",
      "completion_date": "2018-04-27",
      "has_results": true,
      "last_update_posted_date": "2023-01-30",
      "last_synced_at": "2026-10-05T17:26:26.221Z",
      "location_count": 1,
      "location_summary": "Charlotte, North Carolina",
      "locations": [
        {
          "city": "Charlotte",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02432729"
    },
    {
      "nct_id": "NCT01824511",
      "title": "Effects of Quitting Study A Test of Pre-clinical Findings",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Smoking"
      ],
      "interventions": [
        {
          "name": "Smokers cease smoking",
          "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": 287,
      "start_date": "2013-04",
      "completion_date": "2015-09",
      "has_results": false,
      "last_update_posted_date": "2016-03-14",
      "last_synced_at": "2026-10-05T17:26:26.221Z",
      "location_count": 2,
      "location_summary": "Hanover, New Hampshire • Burlington, Vermont",
      "locations": [
        {
          "city": "Hanover",
          "state": "New Hampshire"
        },
        {
          "city": "Burlington",
          "state": "Vermont"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01824511"
    }
  ]
}