Independent directory Public ClinicalTrials.gov records United States
Clear filters
ClinicalTrials.gov public records Last synced Sep 12, 2026, 4:46 AM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
Local D1 index available.
Completed Not applicable Interventional Accepts healthy volunteers Results available

COVID-19 Messaging for Vaccination

NCT05182554
Conditions
Vaccination Refusal, COVID-19 Pandemic
Interventions
Doctor Videos, Sharing Videos, Sharing Videos (Influencers), Vaccine Ambassador, Video framing, Video order
Behavioral
Lead sponsor
Massachusetts Institute of Technology
Other
Eligibility
18 Years and older
Enrollment
6 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
Cambridge, Massachusetts
Recruiting No phase listed Observational

Transitional Housing and HIV Health

NCT06829394
Conditions
HIV, HIV Antiretroviral Therapy (ART) Adherence, Housing Instability
Interventions
Program Assignment
Other
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years and older
Enrollment
200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2028
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Completed Not applicable Interventional

UPHS Weight Loss Study

NCT01800591
Conditions
Obesity
Interventions
Financial incentive
Behavioral
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years to 70 Years
Enrollment
201 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2015
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Completed Not applicable Interventional Results available

Financial Incentives for Maintenance of Weight Loss

NCT01900392
Conditions
Obesity
Interventions
Financial incentive
Behavioral
Lead sponsor
University of Pennsylvania
Other
Eligibility
30 Years to 80 Years
Enrollment
191 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2016
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Completed Not applicable Interventional Accepts healthy volunteers

A School Health Center Intervention to Increase Adolescent Vaccination

NCT01595542
Conditions
Immunization Program, School Health Services, HPV Vaccines
Interventions
Modified Vaccine Consent Form
Behavioral
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
Not listed
Enrollment
3,417 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2012
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Completed Not applicable Interventional

Encouraging Walking in Older Adults

NCT01282944
Conditions
Physical Activity
Interventions
Financial Incentive, Peer Network
Behavioral
Lead sponsor
University of Pennsylvania
Other
Eligibility
65 Years and older
Enrollment
92 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2012
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Conditions
Human Immunodeficiency Virus, Medication Adherence
Interventions
Medication adherence and financial incentives
Behavioral
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2020
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Completed Not applicable Interventional Results available

Randomized Trial of Interventions to Improve Warfarin Adherence

NCT00904982
Conditions
Atrial Fibrillation, Deep Vein Thrombosis, Dilated Cardiomyopathies
Interventions
Financial Incentive and Med-eMonitor, 2Med-eMonitor
Behavioral · Device
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years and older
Enrollment
268 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2013
U.S. locations
2
States / cities
Philadelphia, Pennsylvania
Conditions
High Blood Pressure
Interventions
Control Condition, Regret Lottery
Behavioral
Lead sponsor
NYU Langone Health
Other
Eligibility
18 Years and older
Enrollment
401 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2025
U.S. locations
1
States / cities
New York, New York
Completed Not applicable Interventional Accepts healthy volunteers

Lottery Incentives for Moving

NCT01278654
Conditions
Obesity, Sedentary Lifestyle
Interventions
Incentive to exercise
Behavioral
Lead sponsor
Harvard University
Other
Eligibility
18 Years to 65 Years
Enrollment
212 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011
U.S. locations
1
States / cities
Boston, Massachusetts
Conditions
Cardiovascular Diseases
Interventions
Method of Contact, Source of Contact, Framing Method (Appeal to Altruism or Social Proof, Incentive Structure
Behavioral
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years and older
Enrollment
26,242 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Conditions
HIV/AIDS
Interventions
Prize-linked savings
Other
Lead sponsor
University of Pennsylvania
Other
Eligibility
21 Years and older · Male only
Enrollment
300 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Completed Not applicable Interventional Accepts healthy volunteers Results available

Gestational Weight and Incentive Research Study

NCT03834194
Conditions
Gestational Weight Gain
Interventions
Lottery + Monthly Weight, Lottery + Overall Weight + Exercise, Lottery + Overall Weight, Loss + Overall Weight, Loss + Overall Weight + Exercise, Lottery + Monthly Weight + Exercise, Loss + Monthly Weight, Loss + Monthly Weight + Exercise
Behavioral
Lead sponsor
University of Tennessee
Other
Eligibility
18 Years and older · Female only
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
1
States / cities
Memphis, Tennessee
Completed Not applicable Interventional Accepts healthy volunteers

Denver Garden Environment and Microbiome Study Disease

NCT03089151
Conditions
Diet Modification, Physical Activity, Weight Gain, Chronic Disease, Lifestyle, Sedentary, Health Behavior
Interventions
Community Garden Intervention
Behavioral
Lead sponsor
University of Colorado, Boulder
Other
Eligibility
18 Years and older
Enrollment
16 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2017
U.S. locations
1
States / cities
Boulder, Colorado
Conditions
Atrial Fibrillation, Deep Venous Thrombosis, Dilated Cardiomyopathies
Interventions
Lottery arm (Lottery and Med-eMonitor), Non-Lottery (Med-eMonitor only)
Behavioral
Lead sponsor
University of Pennsylvania
Other
Eligibility
21 Years and older
Enrollment
101 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2009
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Conditions
Antisocial Behavior
Interventions
Attention to Context (ATC) training, Affective Cognitive Control (ACC) training
Behavioral
Lead sponsor
The Mind Research Network
Other
Eligibility
18 Years to 55 Years · Male only
Enrollment
288 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2029
U.S. locations
1
States / cities
Albuquerque, New Mexico
Conditions
Physical Activity
Interventions
Active Rewards, Lottery 1, Lottery 2, Broadcasting winners, Active Rewards Doubled
Behavioral
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years and older
Healthy volunteers
Accepts healthy volunteers
Timeline
2016
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Conditions
HIV Seropositivity, Adherence, Medication
Interventions
MI sessions, TMQQ, Type of compensation
Behavioral
Lead sponsor
New York University
Other
Eligibility
18 Years to 65 Years
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
1
States / cities
New York, New York
Completed Not applicable Interventional Results available

Way to Be Active IV (Framing vs Incentives)

NCT02030080
Conditions
Sedentary Lifestyle
Interventions
Financial incentives, Teams, Framing of feedback, Daily Feedback
Behavioral
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years to 100 Years
Enrollment
288 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Conditions
Colorectal Cancer
Interventions
Auto Mailing Plus Money, Auto Mailing Plus Lottery
Behavioral
Lead sponsor
Kaiser Permanente
Other
Eligibility
50 Years to 75 Years
Enrollment
898 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
1
States / cities
Seattle, Washington
Conditions
Diabetes Mellitus
Interventions
IMPaCT Community Health Worker, Digital health monitoring with financial incentives, Usual Care
Behavioral · Other
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years and older
Enrollment
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2020
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Completed Not applicable Interventional Results available

Lottery Incentive Nudges to Increase Influenza Vaccinations

NCT05012163
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
Conditions
Cardiovascular Disease (CVD)
Interventions
Behavioral Economics Intervention
Behavioral
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years to 80 Years
Enrollment
53 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014
U.S. locations
1
States / cities
Boston, Massachusetts
Conditions
Sedentary Lifestyle
Interventions
Feedback compared to 75th percentile, Forgiveness, Financial Incentive, Daily Feedback
Behavioral
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years to 100 Years
Enrollment
288 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014
U.S. locations
1
States / cities
Philadelphia, Pennsylvania