{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Text+Message+Reminder%2FRecall",
    "query": {
      "intervention": "Text Message Reminder/Recall"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 18,
    "total_pages": 2,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Text+Message+Reminder%2FRecall&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-07T10:46:16.416Z",
  "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": "NCT03294551",
      "title": "HPV Centralized R/R RCT #2 - New York State",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Vaccines"
      ],
      "interventions": [
        {
          "name": "HPV Vaccine Reminder Recall - Autodialer",
          "type": "BEHAVIORAL"
        },
        {
          "name": "HPV Vaccine Reminder Recall - Texting",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of California, Los Angeles",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "11 Years",
        "maximum_age": "14 Years",
        "sex": "ALL",
        "summary": "11 Years to 14 Years"
      },
      "enrollment_count": 37003,
      "start_date": "2017-10-27",
      "completion_date": "2019-11-05",
      "has_results": false,
      "last_update_posted_date": "2021-05-27",
      "last_synced_at": "2026-09-07T10:46:16.416Z",
      "location_count": 1,
      "location_summary": "Los Angeles, California",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03294551"
    },
    {
      "nct_id": "NCT03307642",
      "title": "Evaluation of the School Kids Influenza Prevention Project",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Childhood Influenza Vaccination",
        "School-located Influenza Vaccination"
      ],
      "interventions": [
        {
          "name": "Text message notification",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Rochester",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "4 Years",
        "maximum_age": "19 Years",
        "sex": "ALL",
        "summary": "4 Years to 19 Years"
      },
      "enrollment_count": 18540,
      "start_date": "2017-12-04",
      "completion_date": "2017-12-22",
      "has_results": false,
      "last_update_posted_date": "2018-03-12",
      "last_synced_at": "2026-09-07T10:46:16.416Z",
      "location_count": 1,
      "location_summary": "Rochester, New York",
      "locations": [
        {
          "city": "Rochester",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03307642"
    },
    {
      "nct_id": "NCT03697083",
      "title": "Reminders Through Association & Prescription Adherence",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Medication Adherence"
      ],
      "interventions": [
        {
          "name": "Reminders Through Association",
          "type": "OTHER"
        },
        {
          "name": "Active Control",
          "type": "OTHER"
        },
        {
          "name": "Baseline Control",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Pennsylvania",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 777,
      "start_date": "2018-06-14",
      "completion_date": "2018-09-21",
      "has_results": true,
      "last_update_posted_date": "2019-08-06",
      "last_synced_at": "2026-09-07T10:46:16.416Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03697083"
    },
    {
      "nct_id": "NCT03470753",
      "title": "Impact of Home Exercise Delivery on Compliance & Outcomes for Musculoskeletal Pain",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Chronic Pain",
        "Compliance, Patient",
        "Chronic Low Back Pain",
        "Knee Pain Chronic"
      ],
      "interventions": [
        {
          "name": "Number of Exercises",
          "type": "OTHER"
        },
        {
          "name": "Type of Instruction",
          "type": "OTHER"
        },
        {
          "name": "Delivery Type",
          "type": "OTHER"
        },
        {
          "name": "Mobile Reminder",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Dan Rhon",
      "sponsor_class": "FED",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "18 Years to 65 Years"
      },
      "enrollment_count": 116,
      "start_date": "2018-01-12",
      "completion_date": "2019-11-30",
      "has_results": false,
      "last_update_posted_date": "2020-01-18",
      "last_synced_at": "2026-09-07T10:46:16.416Z",
      "location_count": 1,
      "location_summary": "San Antonio, Texas",
      "locations": [
        {
          "city": "San Antonio",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03470753"
    },
    {
      "nct_id": "NCT01756001",
      "title": "GlowCaps Adherence Randomized Control Trial",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Medical Adherence"
      ],
      "interventions": [
        {
          "name": "GlowCap",
          "type": "DEVICE"
        },
        {
          "name": "Daily email, text message, or phone call reminders",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Paid for adherence",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "DEVICE",
        "BEHAVIORAL"
      ],
      "sponsor": "University of Pennsylvania",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "84 Years",
        "sex": "ALL",
        "summary": "18 Years to 84 Years"
      },
      "enrollment_count": 119,
      "start_date": "2015-02",
      "completion_date": "2017-03-01",
      "has_results": false,
      "last_update_posted_date": "2017-05-09",
      "last_synced_at": "2026-09-07T10:46:16.416Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01756001"
    },
    {
      "nct_id": "NCT01199666",
      "title": "Text Message Reminder-Recalls For Early Childhood Vaccination",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Vaccination"
      ],
      "interventions": [
        {
          "name": "Text message",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Columbia University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "9 Months",
        "maximum_age": "50 Years",
        "sex": "ALL",
        "summary": "9 Months to 50 Years"
      },
      "enrollment_count": 2586,
      "start_date": "2011-06",
      "completion_date": "2013-07",
      "has_results": false,
      "last_update_posted_date": "2014-07-25",
      "last_synced_at": "2026-09-07T10:46:16.416Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01199666"
    },
    {
      "nct_id": "NCT01577979",
      "title": "Adolescent Vaccination in the Medical Home: Established and Innovative Strategies",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Immunization Rate"
      ],
      "interventions": [
        {
          "name": "Text Message Reminder/Recall",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Parent Preference",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Colorado, Denver",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "11 Years",
        "maximum_age": "17 Years",
        "sex": "ALL",
        "summary": "11 Years to 17 Years"
      },
      "enrollment_count": 34581,
      "start_date": "2012-08",
      "completion_date": "2014-09",
      "has_results": false,
      "last_update_posted_date": "2015-02-26",
      "last_synced_at": "2026-09-07T10:46:16.416Z",
      "location_count": 1,
      "location_summary": "Aurora, Colorado",
      "locations": [
        {
          "city": "Aurora",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01577979"
    },
    {
      "nct_id": "NCT03294473",
      "title": "Centralized Reminder Recall - Flu RCT2",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Influenza, Human",
        "Orthomyxoviridae Infections",
        "RNA Virus Infections",
        "Virus Disease",
        "Respiratory Tract Infections",
        "Respiratory Tract Disease",
        "Vaccines",
        "Physiological Effects of Drugs"
      ],
      "interventions": [
        {
          "name": "R/R - Autodialers",
          "type": "BEHAVIORAL"
        },
        {
          "name": "R/R - Texting",
          "type": "BEHAVIORAL"
        },
        {
          "name": "R/R - mailed postcard",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of California, Los Angeles",
      "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": 70190,
      "start_date": "2017-10-18",
      "completion_date": "2018-05-04",
      "has_results": false,
      "last_update_posted_date": "2019-06-05",
      "last_synced_at": "2026-09-07T10:46:16.416Z",
      "location_count": 1,
      "location_summary": "Los Angeles, California",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03294473"
    },
    {
      "nct_id": "NCT05571657",
      "title": "COVID-19 Booster Dose Reminder/Recall for Adolescents",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "COVID-19 Vaccines"
      ],
      "interventions": [
        {
          "name": "Reminder/Recall Sent Via Preferred Method of Communication",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Marshfield Clinic Research Foundation",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "12 Years",
        "maximum_age": "17 Years",
        "sex": "ALL",
        "summary": "12 Years to 17 Years"
      },
      "enrollment_count": 4304,
      "start_date": "2022-05-12",
      "completion_date": "2022-12-31",
      "has_results": false,
      "last_update_posted_date": "2022-10-13",
      "last_synced_at": "2026-09-07T10:46:16.416Z",
      "location_count": 1,
      "location_summary": "Marshfield, Wisconsin",
      "locations": [
        {
          "city": "Marshfield",
          "state": "Wisconsin"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05571657"
    },
    {
      "nct_id": "NCT05535777",
      "title": "Patient Portal Flu Vaccine Reminders_RCT 5 (LADHS)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Influenza",
        "Respiratory Tract Infections"
      ],
      "interventions": [
        {
          "name": "Enhanced texts with Callback by a Person",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Enhanced Bidirectional Texts",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of California, Los Angeles",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "6 Months",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "6 Months and older"
      },
      "enrollment_count": 246295,
      "start_date": "2022-09-13",
      "completion_date": "2023-03-31",
      "has_results": true,
      "last_update_posted_date": "2025-04-11",
      "last_synced_at": "2026-09-07T10:46:16.416Z",
      "location_count": 2,
      "location_summary": "Los Angeles, California",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05535777"
    }
  ]
}