{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=No+messages",
    "query": {
      "intervention": "No messages"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 627,
    "total_pages": 63,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=No+messages&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-02T20:04:45.379Z",
  "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": "NCT02694640",
      "title": "Peers Promoting Exercise Adoption and Maintenance Among Cancer Survivors",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Breast Cancer"
      ],
      "interventions": [
        {
          "name": "Reach Plus",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Reach Plus Phone",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Reach Plus Message",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of South Carolina",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "21 Years and older · Female only"
      },
      "enrollment_count": 161,
      "start_date": "2016-01",
      "completion_date": "2020-03",
      "has_results": true,
      "last_update_posted_date": "2024-06-10",
      "last_synced_at": "2026-09-02T20:04:45.379Z",
      "location_count": 1,
      "location_summary": "Columbia, South Carolina",
      "locations": [
        {
          "city": "Columbia",
          "state": "South Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02694640"
    },
    {
      "nct_id": "NCT04533685",
      "title": "Patient Portal Reminder/Recall for Influenza Vaccination in a Health System- UCLA Portal R/R Influenza RCT 3",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Influenza",
        "Respiratory Tract Infections"
      ],
      "interventions": [
        {
          "name": "Portal Reminders for Influenza Vaccination: Direct scheduling link",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Portal Reminders for Influenza Vaccination: No direct scheduling link",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Pre-Commitment Prompt",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Pre-Appointment flu vaccine reminders",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of California, Los Angeles",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "4 Months",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "4 Months and older"
      },
      "enrollment_count": 213773,
      "start_date": "2020-09-01",
      "completion_date": "2021-04-01",
      "has_results": true,
      "last_update_posted_date": "2022-10-25",
      "last_synced_at": "2026-09-02T20:04:45.379Z",
      "location_count": 1,
      "location_summary": "Los Angeles, California",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04533685"
    },
    {
      "nct_id": "NCT06581250",
      "title": "Improving Show Rates in Dental Care Settings Serving Underserved Populations",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Dental Care"
      ],
      "interventions": [
        {
          "name": "Reminder Messages",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Walk-in Visits",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Motivation-enhanced Communication",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Wisconsin, Madison",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 48,
      "start_date": "2025-04-04",
      "completion_date": "2029-01-31",
      "has_results": false,
      "last_update_posted_date": "2026-04-15",
      "last_synced_at": "2026-09-02T20:04:45.379Z",
      "location_count": 1,
      "location_summary": "Madison, Wisconsin",
      "locations": [
        {
          "city": "Madison",
          "state": "Wisconsin"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06581250"
    },
    {
      "nct_id": "NCT06603090",
      "title": "Text4Vax: Text Message Reminders for Pediatric COVID-19 and Influenza Vaccines 2024-25 Season",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Influenza",
        "COVID-19",
        "Vaccination Hesitancy"
      ],
      "interventions": [
        {
          "name": "Text message influenza vaccine reminders",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Text message COVID-19 vaccine reminders",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Text message influenza and COVID-19 vaccine reminders",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Columbia University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "6 Months",
        "maximum_age": "17 Years",
        "sex": "ALL",
        "summary": "6 Months to 17 Years"
      },
      "enrollment_count": 66147,
      "start_date": "2024-10-02",
      "completion_date": "2025-04-30",
      "has_results": false,
      "last_update_posted_date": "2025-07-11",
      "last_synced_at": "2026-09-02T20:04:45.379Z",
      "location_count": 4,
      "location_summary": "Itasca, Illinois • New York, New York • Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Itasca",
          "state": "Illinois"
        },
        {
          "city": "New York",
          "state": "New York"
        },
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        },
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06603090"
    },
    {
      "nct_id": "NCT02681718",
      "title": "Controlling Hyperglycemia Among Minority Population",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Diabetes"
      ],
      "interventions": [
        {
          "name": "Community health worker education",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Cell phone text messaging",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Sinai Health System",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "64 Years",
        "sex": "ALL",
        "summary": "18 Years to 64 Years"
      },
      "enrollment_count": 272,
      "start_date": "2016-01",
      "completion_date": "2017-09",
      "has_results": false,
      "last_update_posted_date": "2018-01-26",
      "last_synced_at": "2026-09-02T20:04:45.379Z",
      "location_count": 1,
      "location_summary": "Chicago, Illinois",
      "locations": [
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02681718"
    },
    {
      "nct_id": "NCT05212246",
      "title": "Basal Cell Carcinoma Chemoprevention Trial",
      "overall_status": "NOT_YET_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Basal Cell Carcinoma"
      ],
      "interventions": [
        {
          "name": "5% Imiquimod cream",
          "type": "DRUG"
        },
        {
          "name": "Placebo Vehicle Control Cream",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "VA Office of Research and Development",
      "sponsor_class": "FED",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 1630,
      "start_date": "2026-09-21",
      "completion_date": "2032-09-21",
      "has_results": false,
      "last_update_posted_date": "2026-08-21",
      "last_synced_at": "2026-09-02T20:04:45.379Z",
      "location_count": 1,
      "location_summary": "Providence, Rhode Island",
      "locations": [
        {
          "city": "Providence",
          "state": "Rhode Island"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05212246"
    },
    {
      "nct_id": "NCT07496489",
      "title": "Perceptions of Proposed Warnings for Cannabis Edibles Packaging",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Cannabis Use"
      ],
      "interventions": [
        {
          "name": "No Warning Control",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Delayed Effects Text Only",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Delayed Effects Plus Icon",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Delayed Effects Plus Dose",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Delayed Effects Plus Dose Plus Adverse Effects",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Wake Forest University Health Sciences",
      "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": 1250,
      "start_date": "2026-05-27",
      "completion_date": "2026-07-21",
      "has_results": false,
      "last_update_posted_date": "2026-08-27",
      "last_synced_at": "2026-09-02T20:04:45.379Z",
      "location_count": 1,
      "location_summary": "Winston-Salem, North Carolina",
      "locations": [
        {
          "city": "Winston-Salem",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07496489"
    },
    {
      "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": "2026-09-02T20:04:45.379Z",
      "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": "NCT06156215",
      "title": "PROmotion of COVID-19 BOOSTer VA(X)Ccination in the Emergency Department - PROBOOSTVAXED",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "COVID-19"
      ],
      "interventions": [
        {
          "name": "Vaccine Messaging",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Vaccine Acceptance Question",
          "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": 919,
      "start_date": "2024-01-19",
      "completion_date": "2024-08-18",
      "has_results": true,
      "last_update_posted_date": "2025-09-12",
      "last_synced_at": "2026-09-02T20:04:45.379Z",
      "location_count": 7,
      "location_summary": "San Francisco, California • Durham, North Carolina • Philadelphia, Pennsylvania + 1 more",
      "locations": [
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "Durham",
          "state": "North Carolina"
        },
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        },
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06156215"
    },
    {
      "nct_id": "NCT03287830",
      "title": "Flu2Text: Text Message Reminders for 2nd Dose of Influenza Vaccine",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Influenza",
        "Vaccination"
      ],
      "interventions": [
        {
          "name": "Text message influenza vaccine reminders",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Columbia University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "6 Months",
        "maximum_age": "8 Years",
        "sex": "ALL",
        "summary": "6 Months to 8 Years"
      },
      "enrollment_count": 2105,
      "start_date": "2017-10-06",
      "completion_date": "2019-04-30",
      "has_results": true,
      "last_update_posted_date": "2023-09-15",
      "last_synced_at": "2026-09-02T20:04:45.379Z",
      "location_count": 3,
      "location_summary": "Itasca, Illinois • New York, New York • Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Itasca",
          "state": "Illinois"
        },
        {
          "city": "New York",
          "state": "New York"
        },
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03287830"
    }
  ]
}