{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Message+Exposure",
    "query": {
      "condition": "Message Exposure"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 14,
    "total_pages": 2,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Message+Exposure&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-07-21T20:40:52.440Z",
  "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": "NCT05829863",
      "title": "A Neuroimaging Approach to Advance Mechanistic Understanding of Tobacco Use Escalation Risk Among Young Adult African American Vapers",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Message Exposure"
      ],
      "interventions": [
        {
          "name": "educational message exposure",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Georgia",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "29 Years",
        "sex": "ALL",
        "summary": "18 Years to 29 Years"
      },
      "enrollment_count": 24,
      "start_date": "2023-05-01",
      "completion_date": "2025-05-31",
      "has_results": false,
      "last_update_posted_date": "2025-09-23",
      "last_synced_at": "2026-07-21T20:40:52.440Z",
      "location_count": 1,
      "location_summary": "Athens, Georgia",
      "locations": [
        {
          "city": "Athens",
          "state": "Georgia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05829863"
    },
    {
      "nct_id": "NCT05447325",
      "title": "Neuroimaging Approaches to Improve Prediction of Smoking Initiation and Nicotine Escalation in Young Adult ENDS Users",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Message Exposure (Sequence: Regular Then Flavor)",
        "Message Exposure (Sequence: Flavor Then Regular)",
        "No Message Exposure (Control Condition)"
      ],
      "interventions": [
        {
          "name": "Exposure to Anti-Vaping Messages (generic themes then flavor-specific themes)",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Exposure to Anti-Vaping Messages (flavor-specific themes then generic themes)",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Exposure to Anti-Vaping Messages (no message exposure)",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Georgia",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "29 Years",
        "sex": "ALL",
        "summary": "18 Years to 29 Years"
      },
      "enrollment_count": 180,
      "start_date": "2022-07-15",
      "completion_date": "2026-07-31",
      "has_results": false,
      "last_update_posted_date": "2026-04-03",
      "last_synced_at": "2026-07-21T20:40:52.440Z",
      "location_count": 1,
      "location_summary": "Athens, Georgia",
      "locations": [
        {
          "city": "Athens",
          "state": "Georgia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05447325"
    },
    {
      "nct_id": "NCT03274310",
      "title": "FluSAFE: Flu SMS Alerts to Freeze Exposure",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Influenza",
        "Acute Respiratory Infection",
        "Influenza-like Illness"
      ],
      "interventions": [
        {
          "name": "Educational text messages",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Columbia University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 1918,
      "start_date": "2017-10-06",
      "completion_date": "2021-05-15",
      "has_results": true,
      "last_update_posted_date": "2025-01-16",
      "last_synced_at": "2026-07-21T20:40:52.440Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03274310"
    },
    {
      "nct_id": "NCT03201120",
      "title": "Reducing UV Exposure to Prevent Skin Cancer: Message Development & Testing",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Behavior, Health"
      ],
      "interventions": [
        {
          "name": "Outdoor Sun Behavior",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Indoor Tanning Behavior",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Pennsylvania",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "49 Years",
        "sex": "ALL",
        "summary": "18 Years to 49 Years"
      },
      "enrollment_count": 3595,
      "start_date": "2017-03-29",
      "completion_date": "2017-09-28",
      "has_results": false,
      "last_update_posted_date": "2018-11-14",
      "last_synced_at": "2026-07-21T20:40:52.440Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03201120"
    },
    {
      "nct_id": "NCT04166851",
      "title": "Using Open Contest and Neuro-influence Experiment to Develop and Evaluate PrEP Promotion Messages for High Risk Men",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "HIV/AIDS"
      ],
      "interventions": [
        {
          "name": "PrEP campaign messages developed via open contest",
          "type": "BEHAVIORAL"
        },
        {
          "name": "PrEP campaign messages developed via social marketing approach",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Johns Hopkins Bloomberg School of Public Health",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "MALE",
        "summary": "18 Years and older · Male only"
      },
      "enrollment_count": 23,
      "start_date": "2019-11-15",
      "completion_date": "2023-10-30",
      "has_results": true,
      "last_update_posted_date": "2024-10-22",
      "last_synced_at": "2026-07-21T20:40:52.440Z",
      "location_count": 1,
      "location_summary": "Baltimore, Maryland",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04166851"
    },
    {
      "nct_id": "NCT01591187",
      "title": "The Feasibility of Text Messaging to Assess Secondhand Smoke Exposure Among Youngsters With Cancer or Sickle Cell Disease",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Cancer",
        "Sickle Cell Disease"
      ],
      "interventions": [
        {
          "name": "Text messaging",
          "type": "OTHER"
        },
        {
          "name": "Questionnaire",
          "type": "OTHER"
        },
        {
          "name": "Interviews",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "St. Jude Children's Research Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "10 Years",
        "maximum_age": "17 Years",
        "sex": "ALL",
        "summary": "10 Years to 17 Years"
      },
      "enrollment_count": 77,
      "start_date": "2012-05",
      "completion_date": "2014-11",
      "has_results": false,
      "last_update_posted_date": "2015-03-05",
      "last_synced_at": "2026-07-21T20:40:52.440Z",
      "location_count": 1,
      "location_summary": "Memphis, Tennessee",
      "locations": [
        {
          "city": "Memphis",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01591187"
    },
    {
      "nct_id": "NCT05129592",
      "title": "Can Exposure to Brief Messages Correct Misperceptions?",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Beliefs"
      ],
      "interventions": [
        {
          "name": "Coherent corrective messages",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Johns Hopkins Bloomberg School of Public Health",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": "99 Years",
        "sex": "ALL",
        "summary": "21 Years to 99 Years"
      },
      "enrollment_count": 193,
      "start_date": "2021-11-22",
      "completion_date": "2022-08-01",
      "has_results": true,
      "last_update_posted_date": "2024-03-12",
      "last_synced_at": "2026-07-21T20:40:52.440Z",
      "location_count": 1,
      "location_summary": "Baltimore, Maryland",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05129592"
    },
    {
      "nct_id": "NCT06183502",
      "title": "HIV/STD Risk and PrEP Implementation Messaging Among Gay, Bisexual, and Other Men Who Have Sex With Men",
      "overall_status": "SUSPENDED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Sexually Transmitted Infections",
        "Gay",
        "Pre Exposure Prophylaxis"
      ],
      "interventions": [
        {
          "name": "Quantitative survey",
          "type": "BEHAVIORAL"
        },
        {
          "name": "HIV and STI testing",
          "type": "PROCEDURE"
        },
        {
          "name": "Qualitative Assessment",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL",
        "PROCEDURE"
      ],
      "sponsor": "Emory University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "MALE",
        "summary": "18 Years and older · Male only"
      },
      "enrollment_count": 1275,
      "start_date": "2024-06-29",
      "completion_date": "2026-08",
      "has_results": false,
      "last_update_posted_date": "2025-09-02",
      "last_synced_at": "2026-07-21T20:40:52.440Z",
      "location_count": 3,
      "location_summary": "San Diego, California • Atlanta, Georgia • Chicago, Illinois",
      "locations": [
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06183502"
    },
    {
      "nct_id": "NCT07038317",
      "title": "A Text Messaging Trial to Test Vaping Health Messages Optimized to Young Adults' Vaping Status",
      "overall_status": "NOT_YET_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Vaping Behaviors",
        "Message Exposure",
        "Young Adults"
      ],
      "interventions": [
        {
          "name": "Intervention",
          "type": "OTHER"
        },
        {
          "name": "Control",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Hawaii",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "24 Years",
        "sex": "ALL",
        "summary": "18 Years to 24 Years"
      },
      "enrollment_count": 120,
      "start_date": "2026-06-30",
      "completion_date": "2028-01-31",
      "has_results": false,
      "last_update_posted_date": "2026-06-12",
      "last_synced_at": "2026-07-21T20:40:52.440Z",
      "location_count": 1,
      "location_summary": "Honolulu, Hawaii",
      "locations": [
        {
          "city": "Honolulu",
          "state": "Hawaii"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07038317"
    },
    {
      "nct_id": "NCT04247529",
      "title": "Effects of Prior Exposure to Conflicting Health Information on Responses to Subsequent Unrelated Health Messages",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Communication Research"
      ],
      "interventions": [
        {
          "name": "Exposure to conflicting health information",
          "type": "OTHER"
        },
        {
          "name": "No exposure to conflicting health information",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Minnesota",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 6046,
      "start_date": "2020-07-20",
      "completion_date": "2020-08-31",
      "has_results": false,
      "last_update_posted_date": "2020-11-10",
      "last_synced_at": "2026-07-21T20:40:52.440Z",
      "location_count": 1,
      "location_summary": "Chicago, Illinois",
      "locations": [
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04247529"
    }
  ]
}