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ClinicalTrials.gov public records Last synced Oct 30, 2026, 4:51 PM EDT

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

Showing 265–288 of 823 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Environment Clear all
Completed Not applicable Interventional Accepts healthy volunteers

Attitudes and Smoking Perceptions in the Real Environment

NCT06617520
View directory record Official record
Conditions
Tobacco Use
Interventions
Cigarillo flavor type
Other
Lead sponsor
University of Oklahoma
Other
Eligibility
18 Years to 34 Years
Enrollment
29 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
1
States / cities
Oklahoma City, Oklahoma
Source: ClinicalTrials.gov public record
Updated Aug 27, 2025 · Synced Oct 30, 2026, 4:51 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Evaluating the Relationship Between Physical Activity, Diet, Weight, and the Neighborhood Environment for Adolescents

NCT00608036
View directory record Official record
Conditions
Obesity
Interventions
Not listed
Lead sponsor
Dr. James Sallis
Other
Eligibility
12 Years to 16 Years
Enrollment
954 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2012
U.S. locations
2
States / cities
San Diego, California • Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Dec 4, 2020 · Synced Oct 30, 2026, 4:51 PM EDT
Completed Not applicable Interventional Results available

Aging With Long Term Physical Disabilities

NCT04589988
View directory record Official record
Conditions
Physical Disability
Interventions
Removing Environmental Barriers to Independent Living (REBIL), Waitlist Attentional Control
Behavioral
Lead sponsor
Washington University School of Medicine
Other
Eligibility
45 Years to 65 Years
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2023
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Aug 27, 2025 · Synced Oct 30, 2026, 4:51 PM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

American Lung Association (ALA) Lung Health Cohort

NCT04543461
View directory record Official record
Conditions
Lung Diseases
Interventions
Not listed
Lead sponsor
Johns Hopkins University
Other
Eligibility
25 Years to 35 Years
Enrollment
4,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2027
U.S. locations
37
States / cities
Birmingham, Alabama • Tucson, Arizona • Los Angeles, California + 27 more
Source: ClinicalTrials.gov public record
Updated Sep 23, 2026 · Synced Oct 30, 2026, 4:51 PM EDT
Completed No phase listed Observational

An Observational Study of Environmental and SocioEconomic Factors in Opioid Recovery

NCT03604861
View directory record Official record
Conditions
Opioid-use Disorder, Opioid-related Disorders
Interventions
Not applicable - no defined intervention
Other
Lead sponsor
Indivior Inc.
Industry
Eligibility
18 Years to 65 Years
Enrollment
534 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2019
U.S. locations
35
States / cities
Haleyville, Alabama • Hamilton, Alabama • Little Rock, Arkansas + 30 more
Source: ClinicalTrials.gov public record
Updated Apr 18, 2019 · Synced Oct 30, 2026, 4:51 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Examining the Effects of Reduced Environmental Stimulation on the Brain

NCT02452203
View directory record Official record
Conditions
Anxiety
Interventions
Floating
Behavioral
Lead sponsor
Laureate Institute for Brain Research, Inc.
Other
Eligibility
18 Years to 55 Years
Enrollment
56 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2019
U.S. locations
1
States / cities
Tulsa, Oklahoma
Source: ClinicalTrials.gov public record
Updated Sep 22, 2020 · Synced Oct 30, 2026, 4:51 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Effect of Environmental Exposures on the Egg Fertilizing Ability of Human Sperm

NCT00012480
View directory record Official record
Conditions
Male Infertility, Testicular Diseases, Urologic and Male Genital Diseases, Lead Poisoning
Interventions
Not listed
Lead sponsor
National Institute of Environmental Health Sciences (NIEHS)
NIH
Eligibility
21 Years to 55 Years · Male only
Enrollment
400 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2002 – 2007
U.S. locations
3
States / cities
Los Angeles, California • Manhasset, New York • Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Apr 15, 2015 · Synced Oct 30, 2026, 4:51 PM EDT
Completed Not applicable Interventional

Impact of Enhanced Daily Disinfection on Environmental Contamination in Hospital Rooms

NCT05739955
View directory record Official record
Conditions
Disinfection
Interventions
Sani24, Standard EPA-registered disinfectant, Routine Disinfection
Other
Lead sponsor
Duke University
Other
Eligibility
18 Years and older
Enrollment
475 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Apr 6, 2026 · Synced Oct 30, 2026, 4:51 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effects of Pesticide Exposure on Neurodevelopment/Growth/Respiratory Health

NCT00021658
View directory record Official record
Conditions
Environmental Exposure
Interventions
Pesticide application procedures
Procedure
Lead sponsor
National Institute of Environmental Health Sciences (NIEHS)
NIH
Eligibility
18 Years and older · Female only
Enrollment
550 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
1999 – 2003
U.S. locations
1
States / cities
Salinas, California
Source: ClinicalTrials.gov public record
Updated Sep 29, 2014 · Synced Oct 30, 2026, 4:51 PM EDT
Completed Phase 4 Interventional

The Use of Quetiapine (Seroquel) in the Treatment of Social Phobia: Public Speaking Environment

NCT00407199
View directory record Official record
Conditions
Social Phobia
Interventions
quetiapine
Drug
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years to 25 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2007
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Oct 27, 2011 · Synced Oct 30, 2026, 4:51 PM EDT
Withdrawn Not applicable Interventional

Managing Wounds With Allevyn Life in a Home Health Care Environment

NCT02776800
View directory record Official record
Conditions
Wounds and Injuries
Interventions
Allevyn Life, Foam dressing with an integrated adhesive border
Device
Lead sponsor
Smith & Nephew, Inc.
Industry
Eligibility
65 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2017
U.S. locations
3
States / cities
Tustin, California • Wichita, Kansas • McAllen, Texas
Source: ClinicalTrials.gov public record
Updated Feb 9, 2017 · Synced Oct 30, 2026, 4:51 PM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Housing, Environment, And Living Conditions for Transformed Health

NCT06925373
View directory record Official record
Conditions
Lung Diseases, Chronic Disease
Interventions
Indoor Air Purification, Neighborhood Improvements, Housing Improvements
Other
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
18 Years to 89 Years
Enrollment
460 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2028
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Oct 22, 2026 · Synced Oct 30, 2026, 4:51 PM EDT
Recruiting Not applicable Interventional

Rehabilitation in Safety-net Environments (RISE) to Improve Outcomes in Vulnerable Patients With COPD

NCT05572632
View directory record Official record
Conditions
COPD (Chronic Obstructive Pulmonary Disease)
Interventions
COPD Wellness, COPD Wellness Plus+, Usual Care
Behavioral
Lead sponsor
University of California, San Francisco
Other
Eligibility
40 Years to 90 Years
Enrollment
387 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2027
U.S. locations
3
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Oct 27, 2026 · Synced Oct 30, 2026, 4:51 PM EDT
Not listed Not applicable Interventional

Safety and Usability of the Honda Walking Assist Device (HWA) in the Home Environment

NCT04380363
View directory record Official record
Conditions
Stroke
Interventions
Honda Walk Assist (HWA) device, SRALab fitness center membership
Device · Other
Lead sponsor
Shirley Ryan AbilityLab
Other
Eligibility
18 Years to 80 Years
Enrollment
28 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2023
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Aug 8, 2023 · Synced Oct 30, 2026, 4:51 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Genetic, Dietary and Environmental Influences on Vitamin D Metabolism

NCT02590614
View directory record Official record
Conditions
Vitamin D Deficiency
Interventions
800 IU Vitamin D, Placebo
Dietary Supplement
Lead sponsor
Milton S. Hershey Medical Center
Other
Eligibility
18 Years to 35 Years
Enrollment
412 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2019
U.S. locations
1
States / cities
University Park, Pennsylvania
Source: ClinicalTrials.gov public record
Updated May 8, 2019 · Synced Oct 30, 2026, 4:51 PM EDT
Completed Not applicable Interventional Results available

Optimizing Cognitive, Environmental, and Neuromotor Stimulation in Traumatic Brain Injury

NCT04073225
View directory record Official record
Conditions
Traumatic Brain Injury, Dementia Alzheimers, Military Activity
Interventions
MindPod Dolphin, 10 Keys to Healthy Aging
Device · Behavioral
Lead sponsor
Johns Hopkins University
Other
Eligibility
40 Years and older
Enrollment
23 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2024
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Oct 7, 2025 · Synced Oct 30, 2026, 4:51 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Diet, Nutrient Status, and Food Insecurity

NCT03412825
View directory record Official record
Conditions
Food Insecurity
Interventions
Egg supplementation
Dietary Supplement
Lead sponsor
University of Arkansas, Fayetteville
Other
Eligibility
7 Years to 100 Years
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
1
States / cities
Fayetteville, Arkansas
Source: ClinicalTrials.gov public record
Updated Apr 26, 2019 · Synced Oct 30, 2026, 4:51 PM EDT
Completed No phase listed Observational

International Cooperation for Post-Cherynobyl NIS Thyroid Tissue and Data Banks

NCT00339274
View directory record Official record
Conditions
Environment
Interventions
Not listed
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
Not listed
Enrollment
4,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1999 – 2012
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 2, 2017 · Synced Oct 30, 2026, 4:51 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

A Study for Evaluating the SCIO Biofeedback Device's Ability to Increase Body Wellness After One 45-minute Session

NCT01130454
View directory record Official record
Conditions
Stress
Interventions
Universal Electrophysiological Biofeedback Treatment
Device
Lead sponsor
Maitreya Kft.
Industry
Eligibility
18 Years to 65 Years
Enrollment
151 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2010
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Nov 25, 2010 · Synced Oct 30, 2026, 4:51 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Sensory Adapted Dental Environments to Enhance Oral Care for Children

NCT02430051
View directory record Official record
Conditions
Autism
Interventions
Sensory Adapted Dental Environment
Behavioral
Lead sponsor
University of Southern California
Other
Eligibility
6 Years to 12 Years
Enrollment
220 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2021
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Aug 19, 2025 · Synced Oct 30, 2026, 4:51 PM EDT
Completed Not applicable Interventional Results available

Enhanced Room Cleaning in Intensive Care Units to Reduce Gown and Glove Contamination With Multi-drug-resistant Bacteria

NCT01481935
View directory record Official record
Conditions
Infection Control
Interventions
Enhanced cleaning of surfaces in ICU rooms, Sham enhanced cleaning of surfaces in ICU rooms
Other
Lead sponsor
University of Maryland, Baltimore
Other
Eligibility
18 Years and older
Enrollment
190 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2012
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Feb 16, 2022 · Synced Oct 30, 2026, 4:51 PM EDT
Terminated Not applicable Interventional

A Geriatric Home Visit Program to Reduce Post-Hip Fracture Complications

NCT02058329
View directory record Official record
Conditions
Fracture, Infection, Depression, Gait Instability, Debility
Interventions
Home Visit
Other
Lead sponsor
Northwell Health
Other
Eligibility
65 Years and older
Enrollment
18 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2011
U.S. locations
1
States / cities
Staten Island, New York
Source: ClinicalTrials.gov public record
Updated Feb 10, 2014 · Synced Oct 30, 2026, 4:51 PM EDT
Completed No phase listed Observational

Working Memory and School Readiness in Preschool-Aged Children With Sickle Cell Disease

NCT02227472
View directory record Official record
Conditions
Sickle Cell Disease
Interventions
Evaluation of cognitive and pre-academic skills, Parent questionnaires
Other
Lead sponsor
St. Jude Children's Research Hospital
Other
Eligibility
48 Months to 68 Months
Enrollment
84 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2018
U.S. locations
1
States / cities
Memphis, Tennessee
Source: ClinicalTrials.gov public record
Updated Sep 12, 2018 · Synced Oct 30, 2026, 4:51 PM EDT
Completed No phase listed Observational

Characterizing and Comparing the Profile of Microorganisms From Specific Body Sites and Environmental Surfaces in Newly Disinfected Patient Rooms

NCT01803100
View directory record Official record
Conditions
Bacterial Infection
Interventions
No intervention
Other
Lead sponsor
Duke University
Other
Eligibility
18 Years and older
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2015
U.S. locations
2
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Oct 26, 2015 · Synced Oct 30, 2026, 4:51 PM EDT