{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Smoking+Relapse+Prevention&page=4",
    "query": {
      "intervention": "Smoking Relapse Prevention",
      "page": 4
    },
    "page_size": 10
  },
  "pagination": {
    "page": 4,
    "page_size": 10,
    "total_count": 89,
    "total_pages": 9,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Smoking+Relapse+Prevention&page=5&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Smoking+Relapse+Prevention&page=3&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-11-15T10:16:24.366Z",
  "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": "NCT00888992",
      "title": "Technology-Enhanced Quitline Services to Prevent Smoking Relapse",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Smoking Cessation"
      ],
      "interventions": [
        {
          "name": "Quitline Service + 10 automated monitoring calls",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Quitline service + 20 automated monitoring calls",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Indiana University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 1785,
      "start_date": "2010-04",
      "completion_date": "2014-03",
      "has_results": false,
      "last_update_posted_date": "2015-04-03",
      "last_synced_at": "2026-11-15T10:16:24.366Z",
      "location_count": 1,
      "location_summary": "Seattle, Washington",
      "locations": [
        {
          "city": "Seattle",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00888992"
    },
    {
      "nct_id": "NCT04839198",
      "title": "Using Machine Learning to Develop Just-in-Time Adaptive Interventions for Smoking Cessation",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Smoking Cessation"
      ],
      "interventions": [
        {
          "name": "Android Wear smartwatch",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Adaptive Treatment",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Nicotine Patch",
          "type": "DRUG"
        },
        {
          "name": "interviewing-based counseling",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL",
        "DRUG"
      ],
      "sponsor": "The University of Texas Health Science Center, Houston",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 60,
      "start_date": "2024-02-06",
      "completion_date": "2024-11-22",
      "has_results": false,
      "last_update_posted_date": "2025-03-28",
      "last_synced_at": "2026-11-15T10:16:24.366Z",
      "location_count": 1,
      "location_summary": "Houston, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04839198"
    },
    {
      "nct_id": "NCT00621777",
      "title": "A Study of Varenicline for Prevention of Relapse to Smoking in Patients With Schizophrenia or Bipolar Disorder",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Schizophrenia",
        "Schizoaffective Disorder",
        "Bipolar Disorder",
        "Smoking"
      ],
      "interventions": [
        {
          "name": "Varenicline",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Massachusetts General Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "70 Years",
        "sex": "ALL",
        "summary": "18 Years to 70 Years"
      },
      "enrollment_count": 247,
      "start_date": "2008-02",
      "completion_date": "2013-05",
      "has_results": true,
      "last_update_posted_date": "2017-12-21",
      "last_synced_at": "2026-11-15T10:16:24.366Z",
      "location_count": 10,
      "location_summary": "Birmingham, Alabama • Bloomington, Indiana • Boston, Massachusetts + 6 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Bloomington",
          "state": "Indiana"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Grand Rapids",
          "state": "Michigan"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00621777"
    },
    {
      "nct_id": "NCT02906787",
      "title": "Behavioral Activation for Smoking Cessation and the Prevention of Post-Cessation Weight Gain",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Smoking Cessation",
        "Weight Loss"
      ],
      "interventions": [
        {
          "name": "BAS+",
          "type": "BEHAVIORAL"
        },
        {
          "name": "SC",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Abramson Cancer Center at Penn Medicine",
      "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": 288,
      "start_date": "2016-09-13",
      "completion_date": "2021-02-28",
      "has_results": true,
      "last_update_posted_date": "2024-05-29",
      "last_synced_at": "2026-11-15T10:16:24.366Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02906787"
    },
    {
      "nct_id": "NCT01864954",
      "title": "Web and Phone Intervention to Maintain Postpartum Tobacco Abstinence",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Smoking"
      ],
      "interventions": [
        {
          "name": "Web+phone",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Oregon Research Institute",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "60 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 60 Years · Female only"
      },
      "enrollment_count": 62,
      "start_date": "2013-12",
      "completion_date": "2015-05",
      "has_results": false,
      "last_update_posted_date": "2017-08-22",
      "last_synced_at": "2026-11-15T10:16:24.366Z",
      "location_count": 1,
      "location_summary": "Eugene, Oregon",
      "locations": [
        {
          "city": "Eugene",
          "state": "Oregon"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01864954"
    },
    {
      "nct_id": "NCT07075575",
      "title": "Quit-Smoking Study for Native Hawaiians",
      "overall_status": "NOT_YET_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Tobacco Use Disorder",
        "Smoking Cessation"
      ],
      "interventions": [
        {
          "name": "Nicotine Polacrilex Gum (2 mg)",
          "type": "DRUG"
        },
        {
          "name": "Cognitive Behavioral Group Therapy (CBGT)",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "DRUG",
        "BEHAVIORAL"
      ],
      "sponsor": "University of Hawaii",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "18 Years to 80 Years"
      },
      "enrollment_count": 75,
      "start_date": "2026-04-01",
      "completion_date": "2028-04-01",
      "has_results": false,
      "last_update_posted_date": "2026-03-31",
      "last_synced_at": "2026-11-15T10:16:24.366Z",
      "location_count": 1,
      "location_summary": "Honolulu, Hawaii",
      "locations": [
        {
          "city": "Honolulu",
          "state": "Hawaii"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07075575"
    },
    {
      "nct_id": "NCT05041413",
      "title": "Helping Moms Quit Pilot Trial",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Smoking Cessation"
      ],
      "interventions": [
        {
          "name": "Moms Quit",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Text4Baby",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Kansas Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "18 Years and older · Female only"
      },
      "enrollment_count": 30,
      "start_date": "2021-08-11",
      "completion_date": "2022-10-05",
      "has_results": false,
      "last_update_posted_date": "2022-11-04",
      "last_synced_at": "2026-11-15T10:16:24.366Z",
      "location_count": 1,
      "location_summary": "Kansas City, Kansas",
      "locations": [
        {
          "city": "Kansas City",
          "state": "Kansas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05041413"
    },
    {
      "nct_id": "NCT01342523",
      "title": "Evaluation of National Cancer Institute (NCI) Smoking Intervention Resources",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Smoking Cessation",
        "Smoking",
        "Nicotine Dependence"
      ],
      "interventions": [
        {
          "name": "CIS - telephone cessation quitline counseling",
          "type": "OTHER"
        },
        {
          "name": "Lozenge - nicotine mini-lozenges",
          "type": "OTHER"
        },
        {
          "name": "Emails - Brief smoking prevention messages",
          "type": "OTHER"
        },
        {
          "name": "Full website - standard smokefree.gov website content",
          "type": "OTHER"
        },
        {
          "name": "Lite website - lite version of smokefree.gov",
          "type": "OTHER"
        },
        {
          "name": "Full mailed booklet - NCI's detailed 36-page quit guide",
          "type": "OTHER"
        },
        {
          "name": "brief mailed booklet - smaller version of NCI's booklet",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Wisconsin, Madison",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 1034,
      "start_date": "2011-10",
      "completion_date": "2013-10",
      "has_results": true,
      "last_update_posted_date": "2015-10-14",
      "last_synced_at": "2026-11-15T10:16:24.366Z",
      "location_count": 1,
      "location_summary": "Madison, Wisconsin",
      "locations": [
        {
          "city": "Madison",
          "state": "Wisconsin"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01342523"
    },
    {
      "nct_id": "NCT02823028",
      "title": "Twitter-enabled Mobile Messaging for Smoking Relapse Prevention (Tweet2Quit)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Smoking Cessation"
      ],
      "interventions": [
        {
          "name": "NRT",
          "type": "DRUG"
        },
        {
          "name": "Web Guide",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Tweet2Quit",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "DRUG",
        "BEHAVIORAL"
      ],
      "sponsor": "University of California, Irvine",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": "59 Years",
        "sex": "ALL",
        "summary": "21 Years to 59 Years"
      },
      "enrollment_count": 980,
      "start_date": "2016-10",
      "completion_date": "2022-09",
      "has_results": true,
      "last_update_posted_date": "2024-11-21",
      "last_synced_at": "2026-11-15T10:16:24.366Z",
      "location_count": 2,
      "location_summary": "Irvine, California • Stanford, California",
      "locations": [
        {
          "city": "Irvine",
          "state": "California"
        },
        {
          "city": "Stanford",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02823028"
    },
    {
      "nct_id": "NCT05051345",
      "title": "Increasing Access to Smoking Cessation and Smoke Free Home Services for Low-Income Pregnant Women in Northeast Texas",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Cigarette Smoking-Related Carcinoma"
      ],
      "interventions": [
        {
          "name": "Informational Intervention",
          "type": "OTHER"
        },
        {
          "name": "Media Intervention",
          "type": "OTHER"
        },
        {
          "name": "Questionnaire Administration",
          "type": "OTHER"
        },
        {
          "name": "Smoking Cessation Intervention",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Survey Administration",
          "type": "OTHER"
        },
        {
          "name": "Telephone-Based Intervention",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Tobacco Cessation Counseling",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER",
        "BEHAVIORAL"
      ],
      "sponsor": "M.D. Anderson Cancer Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "18 Years and older · Female only"
      },
      "enrollment_count": 191,
      "start_date": "2020-02-18",
      "completion_date": "2026-05-08",
      "has_results": false,
      "last_update_posted_date": "2026-05-15",
      "last_synced_at": "2026-11-15T10:16:24.366Z",
      "location_count": 1,
      "location_summary": "Houston, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05051345"
    }
  ]
}