{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=1-sided+messages",
    "query": {
      "intervention": "1-sided messages"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 5,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-03T18:42:27.975Z",
  "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": "NCT01049139",
      "title": "Preventative Misconception Intervention",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "HIV",
        "HIV Infections"
      ],
      "interventions": [
        {
          "name": "1-sided messages",
          "type": "BEHAVIORAL"
        },
        {
          "name": "2-sided messages",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of North Carolina, Chapel Hill",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "16 Years",
        "maximum_age": "19 Years",
        "sex": "ALL",
        "summary": "16 Years to 19 Years"
      },
      "enrollment_count": 120,
      "start_date": "2010-01",
      "completion_date": "2010-09",
      "has_results": false,
      "last_update_posted_date": "2017-03-03",
      "last_synced_at": "2026-09-03T18:42:27.975Z",
      "location_count": 4,
      "location_summary": "San Francisco, California • New Orleans, Louisiana • Baltimore, Maryland + 1 more",
      "locations": [
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "New Orleans",
          "state": "Louisiana"
        },
        {
          "city": "Baltimore",
          "state": "Maryland"
        },
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01049139"
    },
    {
      "nct_id": "NCT06274723",
      "title": "Responses to E-cigarette Message Source and Presentation",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Vaping"
      ],
      "interventions": [
        {
          "name": "Expert, one-sided",
          "type": "OTHER"
        },
        {
          "name": "Expert, two-sided",
          "type": "OTHER"
        },
        {
          "name": "Peer, one-sided",
          "type": "OTHER"
        },
        {
          "name": "Peer, two-sided",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Massachusetts, Worcester",
      "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": 848,
      "start_date": "2024-11-05",
      "completion_date": "2024-12-17",
      "has_results": true,
      "last_update_posted_date": "2026-01-14",
      "last_synced_at": "2026-09-03T18:42:27.975Z",
      "location_count": 1,
      "location_summary": "Worcester, Massachusetts",
      "locations": [
        {
          "city": "Worcester",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06274723"
    },
    {
      "nct_id": "NCT06269003",
      "title": "Responses to Message Source and Presentation Using Psychophysiology",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Vaping"
      ],
      "interventions": [
        {
          "name": "Expert, one-sided",
          "type": "OTHER"
        },
        {
          "name": "Expert, two-sided",
          "type": "OTHER"
        },
        {
          "name": "Peer, one-sided",
          "type": "OTHER"
        },
        {
          "name": "Peer, two-sided",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Massachusetts, Worcester",
      "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": 112,
      "start_date": "2024-02-18",
      "completion_date": "2024-06-10",
      "has_results": true,
      "last_update_posted_date": "2025-08-01",
      "last_synced_at": "2026-09-03T18:42:27.975Z",
      "location_count": 1,
      "location_summary": "Worcester, Massachusetts",
      "locations": [
        {
          "city": "Worcester",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06269003"
    },
    {
      "nct_id": "NCT00771537",
      "title": "HIV Testing & Womens Attitudes on HIV Vaccine Trials",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "HIV"
      ],
      "interventions": [
        {
          "name": "Message Sidedness",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Indiana University",
      "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": 2031,
      "start_date": "2006-11",
      "completion_date": "2011-01",
      "has_results": true,
      "last_update_posted_date": "2013-07-09",
      "last_synced_at": "2026-09-03T18:42:27.975Z",
      "location_count": 1,
      "location_summary": "Indianapolis, Indiana",
      "locations": [
        {
          "city": "Indianapolis",
          "state": "Indiana"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00771537"
    },
    {
      "nct_id": "NCT01087164",
      "title": "Brief Interventions to Increase HPV Vaccine Acceptance in School-based Health Centers",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Human Papillomavirus Infection"
      ],
      "interventions": [
        {
          "name": "Compliance",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Message sidedness",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Indiana University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "11 Years",
        "maximum_age": "15 Years",
        "sex": "ALL",
        "summary": "11 Years to 15 Years"
      },
      "enrollment_count": 600,
      "start_date": "2010-09",
      "completion_date": "2014-06",
      "has_results": false,
      "last_update_posted_date": "2014-02-10",
      "last_synced_at": "2026-09-03T18:42:27.975Z",
      "location_count": 1,
      "location_summary": "Galveston, Texas",
      "locations": [
        {
          "city": "Galveston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01087164"
    }
  ]
}