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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Appointment Reminder Message Clear all
Completed Not applicable Interventional Accepts healthy volunteers

Information Provision and Consistency Framing to Increase COVID-19 Booster Uptake

NCT05586178
View directory record Official record
Conditions
COVID-19, Vaccines
Interventions
Reminder that facilitates action, Consistency framing, Information provision about the uniqueness of the bivalent booster, Information provision about bivalent booster eligibility, Information provision about the severity of COVID-19 symptoms
Behavioral
Lead sponsor
University of California, Los Angeles
Other
Eligibility
18 Years and older
Enrollment
177,720 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Dec 4, 2024 · Synced Sep 8, 2026, 4:26 PM EDT
Completed Not applicable Interventional Results available

Lottery Incentive Nudges to Increase Influenza Vaccinations

NCT05012163
View directory record Official record
Conditions
Influenza, Vaccination, Health Promotion, Health Behavior
Interventions
Reminder, Financial incentive, Lottery
Behavioral
Lead sponsor
National Bureau of Economic Research, Inc.
Other
Eligibility
18 Years and older
Enrollment
57,581 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
1
States / cities
Danville, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Dec 29, 2024 · Synced Sep 8, 2026, 4:26 PM EDT
Not yet recruiting Not applicable Interventional

Testing a Mobile Health Application to Improve HIV Prevention and Substance Use Treatment Among Women Involved in the Carceral System

NCT07432555
View directory record Official record
Conditions
Substance Abuse, HIV
Interventions
Tool to provide re-entry support and improve linkage to healthcare and social services
Behavioral
Lead sponsor
Temple University
Other
Eligibility
18 Years and older · Female only
Enrollment
74 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated May 12, 2026 · Synced Sep 8, 2026, 4:26 PM EDT
Completed Not applicable Interventional

Text Message Reminder-Recalls For Early Childhood Vaccination

NCT01199666
View directory record Official record
Conditions
Vaccination
Interventions
Text message
Other
Lead sponsor
Columbia University
Other
Eligibility
9 Months to 50 Years
Enrollment
2,586 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2013
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jul 24, 2014 · Synced Sep 8, 2026, 4:26 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Empowering Hispanic Patients' Lung Cancer Screening Uptake (Empower Latinx)

NCT06225414
View directory record Official record
Conditions
Lung Cancer
Interventions
Usual Care, Brief Patient Education, Patient education, Referral to financial navigation resources, Patient Reminders, Provider Reminders
Other · Behavioral
Lead sponsor
University of California, Irvine
Other
Eligibility
50 Years to 80 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2026
U.S. locations
10
States / cities
Anaheim, California • Costa Mesa, California • Irvine, California + 6 more
Source: ClinicalTrials.gov public record
Updated Mar 29, 2026 · Synced Sep 8, 2026, 4:26 PM EDT
Completed Not applicable Interventional Results available

Stroke Telemedicine Outpatient Prevention Program for Blood Pressure Reduction

NCT03923790
View directory record Official record
Conditions
Stroke Prevention, Blood Pressure, Telemedicine, Psychosocial Impairment
Interventions
Educational Packet, Phone call at 72 hours by discharge nurse navigator, Telehealth visit at 7 days, 1 month, 3 months, and 5 months after discharge, Educational messages every other week, BP monitoring by QardioARM with periodic transmission of BP data
Behavioral · Diagnostic Test
Lead sponsor
The University of Texas Health Science Center, Houston
Other
Eligibility
18 Years and older
Enrollment
83 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Nov 8, 2022 · Synced Sep 8, 2026, 4:26 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Contraceptive Choice at the Time of Uterine Evacuation

NCT02836561
View directory record Official record
Conditions
Contraception
Interventions
Telephone message
Other
Lead sponsor
Planned Parenthood League of Massachusetts
Other
Eligibility
18 Years and older · Female only
Enrollment
234 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2017
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Apr 17, 2017 · Synced Sep 8, 2026, 4:26 PM EDT
Completed Not applicable Interventional

Pre-visit Digital Messaging Improves Patient Reported Outcome Measure Participation Prior to the Orthopedic Ambulatory Visit

NCT04983641
View directory record Official record
Conditions
Orthopedic Disorder
Interventions
Pre-Visit Messages
Other
Lead sponsor
Henry Ford Health System
Other
Eligibility
18 Years and older
Enrollment
291 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020
U.S. locations
1
States / cities
Detroit, Michigan
Source: ClinicalTrials.gov public record
Updated Jul 29, 2021 · Synced Sep 8, 2026, 4:26 PM EDT
Completed Not applicable Interventional

Default Bulk Ordering and Text Messaging to Enhance Outreach for Lipid Screening (Missing Lipids)

NCT05724615
View directory record Official record
Conditions
Atherosclerotic Cardiovascular Disease
Interventions
Outreach + Bulk ordering, Outreach + Bulk ordering + Text Based Reminders and Scheduling assistance
Behavioral
Lead sponsor
University of Pennsylvania
Other
Eligibility
20 Years to 75 Years
Enrollment
1,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jan 4, 2024 · Synced Sep 8, 2026, 4:26 PM EDT
Completed Not applicable Interventional

Facilitating Follow-Up Adherence for Abnormal Pap Smears

NCT01561326
View directory record Official record
Conditions
Uterine Cervical Neoplasms
Interventions
Cognitive-affective barriers counseling, Cognitive-affective barriers counseling via brochure, standard care
Behavioral
Lead sponsor
Fox Chase Cancer Center
Other
Eligibility
18 Years and older · Female only
Enrollment
211 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2011
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Mar 22, 2012 · Synced Sep 8, 2026, 4:26 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effects of Prompt to Bundle COVID-19 Booster and Flu Shot

NCT05586165
View directory record Official record
Conditions
COVID-19, Vaccines
Interventions
Reminder to boost protection against COVID-19, Flu Tag Along, COVID-19 Booster & Flu Bundle
Behavioral
Lead sponsor
University of California, Los Angeles
Other
Eligibility
18 Years and older
Enrollment
109,493 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Dec 4, 2024 · Synced Sep 8, 2026, 4:26 PM EDT
Completed Not applicable Interventional

Increasing Screening for Cancer Using EHR-Nudges Replication

NCT06995703
View directory record Official record
Conditions
Breast Cancer
Interventions
Pre-Visit Patient Text Message, Post-Visit Patient Text Messages, Smart Data Element (SDE)
Behavioral
Lead sponsor
Abramson Cancer Center at Penn Medicine
Other
Eligibility
40 Years to 74 Years · Female only
Enrollment
8,490 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Lancaster, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Aug 11, 2026 · Synced Sep 8, 2026, 4:26 PM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Randomized Controlled Trial Examining Health Care Access Interventions for Taxi Drivers

NCT02508363
View directory record Official record
Conditions
Healthcare Access for Taxi Drivers
Interventions
questionnaires
Behavioral
Lead sponsor
Memorial Sloan Kettering Cancer Center
Other
Eligibility
21 Years to 85 Years · Male only
Enrollment
756 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2027
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Aug 4, 2026 · Synced Sep 8, 2026, 4:26 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Meaningful Use of Technology to Improve Health Care Delivery

NCT01641380
View directory record Official record
Conditions
Contraceptive Behavior
Interventions
Text Messaging Intervention
Behavioral
Lead sponsor
Johns Hopkins University
Other
Eligibility
13 Years to 21 Years · Female only
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2017
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 1, 2021 · Synced Sep 8, 2026, 4:26 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Testing Multiple Behavioral Science Strategies to Increase Flu-Shot Rates at a Large Retail Pharmacy

NCT04590066
View directory record Official record
Conditions
Influenza, Human
Interventions
Flu shot text messages
Behavioral
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years and older
Enrollment
734,383 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jan 31, 2021 · Synced Sep 8, 2026, 4:26 PM EDT
Not yet recruiting Not applicable Interventional Accepts healthy volunteers

Overcoming Racial Disparities in Screening Mammography

NCT07549139
View directory record Official record
Conditions
Breast Cancer, Cancer of the Breast
Interventions
Appointment mail reminder, Telephone counseling, Digital navigation video, Automated phone call
Other
Lead sponsor
Washington University School of Medicine
Other
Eligibility
40 Years and older · Female only
Enrollment
176 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2028
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Aug 11, 2026 · Synced Sep 8, 2026, 4:26 PM EDT
Completed Not applicable Interventional Results available

Patient Portal Reminder/Recall for Influenza Vaccination in a Health System- UCLA Portal R/R Influenza RCT 3

NCT04533685
View directory record Official record
Conditions
Influenza, Respiratory Tract Infections
Interventions
Portal Reminders for Influenza Vaccination: Direct scheduling link, Portal Reminders for Influenza Vaccination: No direct scheduling link, Pre-Commitment Prompt, Pre-Appointment flu vaccine reminders
Behavioral
Lead sponsor
University of California, Los Angeles
Other
Eligibility
4 Months and older
Enrollment
213,773 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Oct 24, 2022 · Synced Sep 8, 2026, 4:26 PM EDT
Not yet recruiting Phase 1 Interventional Accepts healthy volunteers

Decision Support Tool to Integrate PrEP Into Emergency Departments

NCT07279129
View directory record Official record
Conditions
HIV
Interventions
Decision support tool, PrEP Delivery
Behavioral
Lead sponsor
George Washington University
Other
Eligibility
18 Years and older
Enrollment
120 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2027 – 2028
U.S. locations
2
States / cities
Washington D.C., District of Columbia • Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Dec 11, 2025 · Synced Sep 8, 2026, 4:26 PM EDT
Completed Phase 3 Interventional

Supporting Transitions to Primary Care Among Under-resourced, Postpartum Women (STEP-UP)

NCT05852054
View directory record Official record
Conditions
Gestational Diabetes Mellitus, Hypertension in Pregnancy, Dysglycemia
Interventions
OB Provider Clinical Decision Support (CDS), Patient Education (OB Visit), Text messaging, Patient Outreach, Primary Care Provider Clinical Decision Support (CDS), Patient Education (Primary Care Visit)
Behavioral
Lead sponsor
Northwestern University
Other
Eligibility
18 Years and older · Female only
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
2
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Jun 21, 2026 · Synced Sep 8, 2026, 4:26 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Engaging Seronegative Youth to Optimize HIV Prevention Continuum

NCT03134833
View directory record Official record
Conditions
HIV, Mental Health, Substance Use, STI
Interventions
Automated Messaging & Monitoring, Peer Support, Coaching
Behavioral
Lead sponsor
University of California, Los Angeles
Other
Eligibility
12 Years to 24 Years
Enrollment
1,478 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2022
U.S. locations
2
States / cities
Los Angeles, California • New Orleans, Louisiana
Source: ClinicalTrials.gov public record
Updated Dec 4, 2022 · Synced Sep 8, 2026, 4:26 PM EDT
Enrolling by invitation Not applicable Interventional

Colorectal Cancer Screening Preventive Reminder Ordering AssistanCe Via Texting for Improved Visit Encounters

NCT07636174
View directory record Official record
Conditions
Behavior, Health
Interventions
Post-visit patient messaging
Behavioral
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years and older
Enrollment
3,888 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Aug 2, 2026 · Synced Sep 8, 2026, 4:26 PM EDT
Completed Not applicable Interventional Results available

Effect of Varied Outreach Methods on Appointment Scheduling, Appointment Completion, and Receipt of MMR Vaccination

NCT04567342
View directory record Official record
Conditions
Preventable Disease, Vaccine, Health Care Utilization
Interventions
1 automated message, 2 automated messages, No personal contact attempt, 1 personal contact attempt
Other
Lead sponsor
Children's Hospital Medical Center, Cincinnati
Other
Eligibility
12 Months to 4 Years
Enrollment
1,312 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Aug 11, 2024 · Synced Sep 8, 2026, 4:26 PM EDT
Completed Not applicable Interventional

UCLA Health Patient Health Maintenance With Interactive Text Reminder

NCT05791955
View directory record Official record
Conditions
Health Maintenance, Diabetes, Cancer
Interventions
Reminder of preventive care measures, Acknowledgement of personal responsibility, Planning prompt
Behavioral
Lead sponsor
University of California, Los Angeles
Other
Eligibility
18 Years and older
Enrollment
10,751 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2024
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Jul 1, 2025 · Synced Sep 8, 2026, 4:26 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Optimizing Gastrointestinal Procedure Appointments

NCT03879616
View directory record Official record
Conditions
Gastrointestinal Disease
Interventions
An Enhanced Reminder
Behavioral
Lead sponsor
Kaiser Permanente
Other
Eligibility
21 Years to 120 Years
Enrollment
15,974 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2021
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Feb 20, 2022 · Synced Sep 8, 2026, 4:26 PM EDT