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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Screen Time Clear all
Not yet recruiting Not applicable Interventional Accepts healthy volunteers

The DISCOVER Study

NCT07390643
View directory record Official record
Conditions
Cancer, Cancer Diagnosis
Interventions
GRAIL Galleri MCED test
Device
Lead sponsor
Dana-Farber Cancer Institute
Other
Eligibility
22 Years and older
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2028
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Feb 4, 2026 · Synced Sep 3, 2026, 5:45 AM EDT
Terminated Not applicable Interventional Accepts healthy volunteers

Assessing Effect of Withdrawal Time on Adenoma Detection Rate for Screening Colonoscopy

NCT05018325
View directory record Official record
Conditions
Colon Cancer, Rectal Cancer, Colorectal Cancer
Interventions
Colonoscopy with 6 minute withdrawal, Colonoscopy 9 minute withdrawal, Colonoscopy 12 minute withdrawal
Procedure
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years to 75 Years
Enrollment
32 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Aug 30, 2022 · Synced Sep 3, 2026, 5:45 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Reactions to Social Media Warning Labels Among Teens and Young Adults

NCT07199660
View directory record Official record
Conditions
Screen Time Exposure
Interventions
Human-developed negative body image warning, Voluntary warning, Human-developed depression and anxiety warning, Human-developed addiction warning, Human-developed sleep warning, Human-developed mental health harms to young people warning, Human-developed warning that social media has not been proven safe, Control message, California's proposed social media warning, Artificial-intelligence-developed depression and anxiety warning, Artificial-intelligence-developed negative body image warning, Artificial-intelligence-developed addiction warning, Artificial-intelligence-developed sleep warning, Artificial-intelligence-developed mental health harms to young people warning, Artificial-intelligence-developed warning that social media has not been proven safe
Behavioral
Lead sponsor
Stanford University
Other
Eligibility
13 Years to 29 Years
Enrollment
1,012 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025
U.S. locations
1
States / cities
Palo Alto, California
Source: ClinicalTrials.gov public record
Updated Mar 15, 2026 · Synced Sep 3, 2026, 5:45 AM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Study to Evaluate the Diagnostic Performance of of MAGENTIQ-COLO During Colonoscopy.

NCT06568523
View directory record Official record
Conditions
Screening Colonoscopy, Surveillance Colonoscopy
Interventions
MAGENTIQ-COLO.
Diagnostic Test
Lead sponsor
Magentiq Eye LTD
Industry
Eligibility
45 Years to 80 Years
Enrollment
330 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
2
States / cities
Baltimore, Maryland • Chattanooga, Tennessee
Source: ClinicalTrials.gov public record
Updated Aug 22, 2024 · Synced Sep 3, 2026, 5:45 AM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Searching for Masses and Calcifications at the Same Time in Breast Cancer Screening

NCT05975736
View directory record Official record
Conditions
Mammography, Breast Cancer, Radiology
Interventions
Search only for masses, Search only for calcifications, Search for both together, Search for one after the other
Behavioral
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
18 Years and older
Enrollment
70 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2028
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Aug 18, 2026 · Synced Sep 3, 2026, 5:45 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Fit 5 Kids Screen Time Reduction Curriculum for Latino Preschoolers

NCT03575884
View directory record Official record
Conditions
Obesity, Childhood, Physical Activity, Nutrition
Interventions
Screen Time Reduction Curriculum
Behavioral
Lead sponsor
Seattle Children's Hospital
Other
Eligibility
3 Years to 5 Years
Enrollment
201 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2023
U.S. locations
3
States / cities
Houston, Texas • Seattle, Washington • Sunnyside, Washington
Source: ClinicalTrials.gov public record
Updated Mar 26, 2025 · Synced Sep 3, 2026, 5:45 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Physical Activity and Screen-Time Regulations in Childcare Centers - Aim 3

NCT02751775
View directory record Official record
Conditions
Childhood Obesity
Interventions
Not listed
Lead sponsor
Pennington Biomedical Research Center
Other
Eligibility
Not listed
Enrollment
28 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2017
U.S. locations
1
States / cities
Baton Rouge, Louisiana
Source: ClinicalTrials.gov public record
Updated Mar 28, 2024 · Synced Sep 3, 2026, 5:45 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers

Babesia Testing in Blood Donors

NCT01528449
View directory record Official record
Conditions
Transfusion Transmitted Babesiosis
Interventions
B.microti diagnostic blood tests
Biological
Lead sponsor
Imugen
Industry
Eligibility
16 Years and older
Enrollment
90,116 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2014
U.S. locations
1
States / cities
Norwood, Massachusetts
Source: ClinicalTrials.gov public record
Updated Sep 11, 2017 · Synced Sep 3, 2026, 5:45 AM EDT
Completed Not applicable Interventional

Prospective Randomized Controlled Trial Comparing Water and Air Colonoscopy in a Community Based Setting

NCT01729416
View directory record Official record
Conditions
Tubular Adenoma, Colon Cancer, Hyperplastic Polyp
Interventions
Water Exchange Colonoscopy, Air Colonoscopy
Other
Lead sponsor
University of California, Davis
Other
Eligibility
50 Years and older
Enrollment
178 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2015
U.S. locations
1
States / cities
Elk Grove, California
Source: ClinicalTrials.gov public record
Updated May 30, 2017 · Synced Sep 3, 2026, 5:45 AM EDT
Completed Not applicable Interventional

The Effect of Time-Slot Scheduling and Active Choice on Biometric Screening Participation

NCT01305798
View directory record Official record
Conditions
Preventative Health
Interventions
Scheduling and Active Choice for Biometric Participation
Other
Lead sponsor
National Bureau of Economic Research, Inc.
Other
Eligibility
18 Years and older
Enrollment
11,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Apr 11, 2017 · Synced Sep 3, 2026, 5:45 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

WatchWell: Simple and Practical Strategies to Reduce the Negative Health Impact of Sedentary Screen Time

NCT06963736
View directory record Official record
Conditions
Sedentary Time, Cardiovascular Diseases, Prediabetes, Obesity
Interventions
Blue light, Eating, Standing
Behavioral
Lead sponsor
Arizona State University
Other
Eligibility
26 Years and older
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
Tempe, Arizona
Source: ClinicalTrials.gov public record
Updated Feb 24, 2026 · Synced Sep 3, 2026, 5:45 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Clinical Study of Real Time Colorectal Polyp Diagnosis During Colonoscopy - the VALID Colonoscopy Study

NCT01288833
View directory record Official record
Conditions
Colorectal Neoplasm, Colonic Polyps
Interventions
Close focus HD NBI Colonoscopy System
Device
Lead sponsor
VA Palo Alto Health Care System
Federal
Eligibility
18 Years and older
Enrollment
558 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2015
U.S. locations
2
States / cities
Palo Alto, California • Kansas City, Missouri
Source: ClinicalTrials.gov public record
Updated May 31, 2018 · Synced Sep 3, 2026, 5:45 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Healthy Online Parental Education Project to Increase Fruit and Vegetable Intake and Active Playtime Among Toddlers

NCT05085041
View directory record Official record
Conditions
Eating Behavior
Interventions
Multi-Component eHealth Intervention, namely Healthy Online Parental Education (HOPE)
Behavioral
Lead sponsor
Texas Tech University
Other
Eligibility
18 Years and older
Enrollment
73 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
Lubbock, Texas
Source: ClinicalTrials.gov public record
Updated Oct 6, 2022 · Synced Sep 3, 2026, 5:45 AM EDT
Completed No phase listed Observational

Reducing the Duration of Untreated Psychosis in the United States

NCT03369730
View directory record Official record
Conditions
First Episode Psychosis (FEP), At Risk Mental State (ARMS)
Interventions
Not listed
Lead sponsor
Icahn School of Medicine at Mount Sinai
Other
Eligibility
12 Years to 30 Years
Enrollment
94 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2021
U.S. locations
3
States / cities
Boston, Massachusetts • New York, New York
Source: ClinicalTrials.gov public record
Updated Dec 13, 2021 · Synced Sep 3, 2026, 5:45 AM EDT
Active, not recruiting Not applicable Interventional

StandUPTV Habits: Feasibility Trial for Maintaining Reductions in Sedentary Screen Time

NCT06700525
View directory record Official record
Conditions
Sedentary Behaviors, Screen Time, Physical Activity, Glucose Metabolism, Sleep Quality, HbA1c Level
Interventions
Non-Sedentary Behavior Habit Formation, Sedentary Screen Time Reduction Smartphone App
Behavioral
Lead sponsor
Arizona State University
Other
Eligibility
23 Years to 64 Years
Enrollment
48 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
2
States / cities
Tempe, Arizona • San Luis Obispo, California
Source: ClinicalTrials.gov public record
Updated Aug 16, 2026 · Synced Sep 3, 2026, 5:45 AM EDT
Completed No phase listed Observational Accepts healthy volunteers Results available

Physical Activity and Screen-Time Regulations in Childcare Centers - Aim 2

NCT02751814
View directory record Official record
Conditions
Childhood Obesity
Interventions
Not listed
Lead sponsor
Pennington Biomedical Research Center
Other
Eligibility
3 Years to 4 Years
Enrollment
175 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2018
U.S. locations
1
States / cities
Baton Rouge, Louisiana
Source: ClinicalTrials.gov public record
Updated Mar 28, 2024 · Synced Sep 3, 2026, 5:45 AM EDT
Terminated No phase listed Observational

The Utility of Time Segmental Withdrawal During Screening Colonoscopy for Increasing Adenoma Detection Rate.

NCT02538406
View directory record Official record
Conditions
Adenomatous Polyp of Colon
Interventions
Segmental withdrawal
Other
Lead sponsor
Baylor College of Medicine
Other
Eligibility
18 Years to 80 Years
Enrollment
232 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2020
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Oct 27, 2020 · Synced Sep 3, 2026, 5:45 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

StandUPTV: Reducing Sedentary Screen Time in Adults

NCT04464993
View directory record Official record
Conditions
Sedentary Behavior, Screen Time, Physical Activity, Sleep
Interventions
Device-based feedback, self-monitoring, and education: CORE, Sedentary Screen Time lockout: LOCKOUT, Context-based prompts: TEXT, Earn sedentary screen time through moderate-vigorous physical activity: EARN
Behavioral
Lead sponsor
Arizona State University
Other
Eligibility
23 Years to 64 Years
Enrollment
110 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
2
States / cities
Tempe, Arizona • San Luis Obispo, California
Source: ClinicalTrials.gov public record
Updated Apr 14, 2025 · Synced Sep 3, 2026, 5:45 AM EDT
Enrolling by invitation Not applicable Interventional

Reducing the Duration of Untreated Psychosis in the United States: The Impact of Screening and Systematic Communication

NCT05509998
View directory record Official record
Conditions
First Episode Psychosis (FEP), Clinical High Risk for Psychosis (CHR)
Interventions
Screening Method (SM), Screening and Communication Method (SCM)
Behavioral
Lead sponsor
Icahn School of Medicine at Mount Sinai
Other
Eligibility
12 Years to 30 Years
Enrollment
912 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2027
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jul 19, 2025 · Synced Sep 3, 2026, 5:45 AM EDT
Completed No phase listed Observational

Natural Language Processing for Screening Opioid Misuse

NCT05745480
View directory record Official record
Conditions
Opioid Use Disorder, Opioid Misuse
Interventions
Opioid Misuse Screening with an Addiction Consult Service
Other
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years and older
Enrollment
47,502 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Apr 22, 2025 · Synced Sep 3, 2026, 5:45 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Testing an App-Based Approach to Reading and Screen Time Guidance for Parents of Infants

NCT05508282
View directory record Official record
Conditions
Literacy, Parent-Child Relations, Language Development
Interventions
Reading Bees app and children's book to enhance parent-infant reading quality (0-2 month visit), Reading Bees app and children's book to encourage alternatives to digital media (6-month visit)
Behavioral
Lead sponsor
Children's Hospital Medical Center, Cincinnati
Other
Eligibility
0 Months to 2 Months
Enrollment
160 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2024
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Jul 17, 2024 · Synced Sep 3, 2026, 5:45 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

SWITCH Implementation Effectiveness Trial

NCT04045288
View directory record Official record
Conditions
Sedentary Behavior, Health Promotion, Overweight and Obesity, Healthy Lifestyle, Diet, Healthy
Interventions
Standard Implementation, Enhanced Implementation
Behavioral
Lead sponsor
Iowa State University
Other
Eligibility
9 Years to 11 Years
Enrollment
1,984 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
1
States / cities
Ames, Iowa
Source: ClinicalTrials.gov public record
Updated Aug 4, 2019 · Synced Sep 3, 2026, 5:45 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Colonoscopy Screening: Setting Epic Follow-up Times

NCT05631873
View directory record Official record
Conditions
Concordance Between Colonoscopy Follow up Interval Noted in Patient Letters vs. Electronic Health Record Chart, Colorectal Cancer
Interventions
Assistance with implementing Epic Smartlist
Other
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
Not listed
Enrollment
43 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2024
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Mar 11, 2024 · Synced Sep 3, 2026, 5:45 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Reducing Work-related Screen Time in Health Care Workers During Leisure Time

NCT05106647
View directory record Official record
Conditions
Stress, Burnout, Caregiver
Interventions
Reduce screen time
Behavioral
Lead sponsor
University of Nebraska
Other
Eligibility
19 Years and older
Enrollment
520 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
1
States / cities
Omaha, Nebraska
Source: ClinicalTrials.gov public record
Updated Sep 18, 2024 · Synced Sep 3, 2026, 5:45 AM EDT