{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Smiling+instead+of+Smoking",
    "query": {
      "intervention": "Smiling instead of Smoking"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 4,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-09T06:05:52.156Z",
  "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": "NCT03951766",
      "title": "Version 2 of the Smoking Cessation Smartphone App \"Smiling Instead of Smoking\" (SiS)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Smoking Cessation",
        "Smoking, Tobacco"
      ],
      "interventions": [
        {
          "name": "Smiling Instead of Smoking (SiS) App Version 2",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Massachusetts General Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 100,
      "start_date": "2019-06-24",
      "completion_date": "2020-06-08",
      "has_results": true,
      "last_update_posted_date": "2022-07-26",
      "last_synced_at": "2026-09-09T06:05:52.156Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03951766"
    },
    {
      "nct_id": "NCT06678243",
      "title": "Testing the mHealth App Intervention for Nondaily Smokers \"SiS4\"",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Smoking Cessation"
      ],
      "interventions": [
        {
          "name": "Smiling instead of Smoking",
          "type": "BEHAVIORAL"
        },
        {
          "name": "QuitGuide",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Massachusetts General Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 1600,
      "start_date": "2024-12-06",
      "completion_date": "2028-07-01",
      "has_results": false,
      "last_update_posted_date": "2025-06-11",
      "last_synced_at": "2026-09-09T06:05:52.156Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06678243"
    },
    {
      "nct_id": "NCT05886621",
      "title": "Testing the Integrated mHealth App Intervention \"SiS-H\"",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Smoking Cessation"
      ],
      "interventions": [
        {
          "name": "Smiling instead of Smoking - HIV",
          "type": "BEHAVIORAL"
        },
        {
          "name": "QuitGuide",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Massachusetts General Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 66,
      "start_date": "2023-11-07",
      "completion_date": "2025-07-07",
      "has_results": true,
      "last_update_posted_date": "2026-06-24",
      "last_synced_at": "2026-09-09T06:05:52.156Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05886621"
    },
    {
      "nct_id": "NCT04672239",
      "title": "A Proof-of-concept RCT of Version 3.0 of the Smoking Cessation Smartphone App \"Smiling Instead of Smoking\" (SiS)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Nondaily Smoking"
      ],
      "interventions": [
        {
          "name": "Smartphone app \"Smiling instead of Smoking\" (SiS) Version 3",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Smartphone app \"QuitGuide\" (QG)",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Brochure \"Clearing the Air\" (CTA)",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Massachusetts General Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 229,
      "start_date": "2021-01-28",
      "completion_date": "2023-01-06",
      "has_results": true,
      "last_update_posted_date": "2024-09-19",
      "last_synced_at": "2026-09-09T06:05:52.156Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04672239"
    }
  ]
}