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ClinicalTrials.gov public records Last synced Oct 18, 2026, 1:15 AM EDT

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Showing 1–24 of 57 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Screen Time Clear all
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 12, 2017 · Synced Oct 18, 2026, 1:15 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 Jun 1, 2018 · Synced Oct 18, 2026, 1:15 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 31, 2017 · Synced Oct 18, 2026, 1:15 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Assessing the Variability Over Time of Tobacco Carcinogen Biomarkers in Smokers - 2

NCT00158145
View directory record Official record
Conditions
Tobacco Use Disorder
Interventions
Not listed
Lead sponsor
National Institute on Drug Abuse (NIDA)
NIH
Eligibility
55 Years to 74 Years
Enrollment
72 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2007
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Jan 10, 2017 · Synced Oct 18, 2026, 1:15 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Online Mindfulness-Based Intervention to Decrease Pre-Procedural Anxiety Before a First-Time Screening Colonoscopy

NCT06233253
View directory record Official record
Conditions
Colorectal Carcinoma
Interventions
Best Practice, Medical Chart Review, Online Mindfulness Meditation, Survey Administration
Other · Behavioral
Lead sponsor
Ohio State University Comprehensive Cancer Center
Other
Eligibility
45 Years to 75 Years
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Feb 24, 2025 · Synced Oct 18, 2026, 1:15 AM EDT
Completed Not applicable Interventional

The Effect of Screen Time on Recovery From Concussion

NCT03564210
View directory record Official record
Conditions
Concussion, Brain
Interventions
Screen time permitted, Screen Time Abstain
Behavioral
Lead sponsor
Theodore Macnow
Other
Eligibility
12 Years to 25 Years
Enrollment
125 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
1
States / cities
Worcester, Massachusetts
Source: ClinicalTrials.gov public record
Updated Nov 6, 2020 · Synced Oct 18, 2026, 1:15 AM EDT
Withdrawn Not applicable Interventional Accepts healthy volunteers

Home-Based Exergaming Intervention

NCT04540523
View directory record Official record
Conditions
Physical Activity, Health-related Fitness, Cognition, Screen Time
Interventions
Exergaming intervention group, Traditional physical activity comparison
Behavioral
Lead sponsor
University of Minnesota
Other
Eligibility
4 Years to 5 Years
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2025
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Mar 17, 2022 · Synced Oct 18, 2026, 1:15 AM EDT
Completed Not applicable Interventional

Concussion Screen Use Recovery Time

NCT05373992
View directory record Official record
Conditions
Sport-related Concussion
Interventions
Screen Time Restriction (ST-Restricted), Aerobic Exercise (AE), Screen-time restricted plus aerobic exercise (STR+AE), Stretching Only
Behavioral
Lead sponsor
Children's Health
Other
Eligibility
12 Years to 17 Years
Enrollment
85 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2024
U.S. locations
1
States / cities
Plano, Texas
Source: ClinicalTrials.gov public record
Updated Oct 18, 2024 · Synced Oct 18, 2026, 1:15 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 19, 2026 · Synced Oct 18, 2026, 1:15 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 28, 2020 · Synced Oct 18, 2026, 1:15 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 19, 2024 · Synced Oct 18, 2026, 1:15 AM EDT
Terminated Phase 3 Interventional Results available

Multicenter,Single-arm Study to Evaluate Efficacy, Safety, & Pharmacokinetics of Denosumab in Children w/ OI

NCT02352753
View directory record Official record
Conditions
Osteogenesis Imperfecta
Interventions
Denosumab
Drug
Lead sponsor
Amgen
Industry
Eligibility
2 Years to 17 Years
Enrollment
153 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2022
U.S. locations
13
States / cities
Los Angeles, California • Torrance, California • Aurora, Colorado + 10 more
Source: ClinicalTrials.gov public record
Updated Dec 28, 2022 · Synced Oct 18, 2026, 1:15 AM EDT
Completed No phase listed Observational Accepts healthy volunteers Results available

Physical Activity and Screen-Time Regulations in Childcare Centers - Aim 1

NCT02751788
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
112 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 29, 2024 · Synced Oct 18, 2026, 1:15 AM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Balancing Emotions and Electronics: A Pilot Intervention for Preschoolers

NCT07394166
View directory record Official record
Conditions
Screen Media Use
Interventions
Brief-RSU
Behavioral
Lead sponsor
Boston Children's Hospital
Other
Eligibility
30 Months to 54 Months
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Sep 10, 2026 · Synced Oct 18, 2026, 1:15 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 Oct 13, 2026 · Synced Oct 18, 2026, 1:15 AM EDT
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 5, 2026 · Synced Oct 18, 2026, 1:15 AM EDT
Completed Phase 2Phase 3 Interventional Accepts healthy volunteers

Reducing Television Viewing to Prevent Childhood Obesity

NCT00185770
View directory record Official record
Conditions
Obesity, Cardiovascular Diseases
Interventions
Reducing television and other screen time (SMART curriculum)
Behavioral
Lead sponsor
Stanford University
Other
Eligibility
0 Years and older
Enrollment
900 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
Started 1999
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated Sep 16, 2005 · Synced Oct 18, 2026, 1:15 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Standard Colonoscopy Versus Colonoscopy With Endocuff Vision

NCT03361917
View directory record Official record
Conditions
Colorectal Polyp, Colorectal Adenoma, Colon Cancer
Interventions
Endocuff Vision
Device
Lead sponsor
Indiana University
Other
Eligibility
40 Years and older
Enrollment
200 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
1
States / cities
Indianapolis, Indiana
Source: ClinicalTrials.gov public record
Updated Aug 6, 2019 · Synced Oct 18, 2026, 1:15 AM EDT
Completed Not applicable Interventional Results available

Psychosis Screening in Juvenile Justice

NCT03583073
View directory record Official record
Conditions
Psychotic Disorders, Psychosis Nos/Other
Interventions
Enhanced Referral/Linkage to Care, Standard Care
Behavioral
Lead sponsor
Brown University
Other
Eligibility
12 Years to 17 Years
Enrollment
77 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2023
U.S. locations
2
States / cities
Providence, Rhode Island
Source: ClinicalTrials.gov public record
Updated Nov 27, 2024 · Synced Oct 18, 2026, 1:15 AM EDT
Completed No phase listed Observational

To Evaluate the Impact of MRSA Nasal Screen Implementation.

NCT07748143
View directory record Official record
Conditions
MRSA
Interventions
Duration of therapy, Direct Cost, Pharmacokinectic Monitoring, Hospital stay
Other
Lead sponsor
Methodist Health System
Other
Eligibility
18 Years and older
Enrollment
21 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2026
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Aug 5, 2026 · Synced Oct 18, 2026, 1:15 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 5, 2019 · Synced Oct 18, 2026, 1:15 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 31, 2022 · Synced Oct 18, 2026, 1:15 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 12, 2017 · Synced Oct 18, 2026, 1:15 AM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Lutein Supplementation in Healthy Children

NCT05314647
View directory record Official record
Conditions
Eye Fatigue, Diet, Healthy, Cognitive Change
Interventions
lutein, placebo
Dietary Supplement
Lead sponsor
Northcentral University
Other
Eligibility
8 Years to 16 Years
Enrollment
59 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
Des Moines, Iowa
Source: ClinicalTrials.gov public record
Updated Nov 30, 2023 · Synced Oct 18, 2026, 1:15 AM EDT