- Conditions
- Chronic Obstructive Pulmonary Disease (COPD)
- Interventions
- Air cleaner, Sham air cleaner
- Device
- Lead sponsor
- JHSPH Center for Clinical Trials
- Other
- Eligibility
- 40 Years and older
- Enrollment
- 770 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2024 – 2029
- U.S. locations
- 11
- States / cities
- Birmingham, Alabama • Los Angeles, California • Iowa City, Iowa + 7 more
Search Results
Search by objective public record fields.
Search by query text, NCT ID, condition, intervention, sponsor, city, state, recruitment status, phase, study type, healthy volunteer eligibility, sex, or age. Results are retrieved from ClinicalTrials.gov and synchronized into the directory. Search pages remain noindex by default.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Showing 1–13
of 13
matching trials from the live ClinicalTrials.gov search.
Local D1 index available.
- Conditions
- COPD, Chronic Obstructive Pulmonary Disease
- Interventions
- Active HEPA Air Cleaner, Motivational interviewing, Sham Air Cleaner
- Device · Behavioral
- Lead sponsor
- Johns Hopkins University
- Other
- Eligibility
- 40 Years and older
- Enrollment
- 144 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2019 – 2024
- U.S. locations
- 1
- States / cities
- Baltimore, Maryland
- Conditions
- Asthma
- Interventions
- High Efficiency Particulate Air Cleaner, Sham air cleaner
- Device
- Lead sponsor
- Johns Hopkins University
- Other
- Eligibility
- 18 Years to 50 Years
- Enrollment
- 23 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2014 – 2018
- U.S. locations
- 2
- States / cities
- Baltimore, Maryland
- Conditions
- PreDiabetes
- Interventions
- PAC with HEPA filter intact, PAC with HEPA filter removed
- Device
- Lead sponsor
- NYU Langone Health
- Other
- Eligibility
- 18 Years to 85 Years
- Enrollment
- 150 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2023 – 2026
- U.S. locations
- 1
- States / cities
- New York, New York
- Conditions
- Blood Pressure
- Interventions
- Active PAC, Sham PAC
- Device
- Lead sponsor
- NYU Langone Health
- Other
- Eligibility
- 18 Years to 100 Years
- Enrollment
- 440 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2023 – 2028
- U.S. locations
- 1
- States / cities
- New York, New York
- Conditions
- Pediatric Asthma
- Interventions
- Portable air cleaner with HEPA filter, Less effective portable air cleaner (no HEPA)
- Device
- Lead sponsor
- University of Washington
- Other
- Eligibility
- 6 Years to 12 Years
- Enrollment
- 60 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2024 – 2027
- U.S. locations
- 1
- States / cities
- Seattle, Washington
- Conditions
- Cardiovascular Diseases
- Interventions
- Portable air cleaner (PAC), Sham Portable air cleaner (PAC)
- Other
- Lead sponsor
- NYU Langone Health
- Other
- Eligibility
- 18 Years to 100 Years
- Enrollment
- 48 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2022 – 2023
- U.S. locations
- 1
- States / cities
- New York, New York
- Conditions
- Asthma Control, Pulmonary Function, Quality of Life, Stress, Sleep Quality
- Interventions
- Energy Recovery Ventilator, Portable Air Cleaner, Energy Recovery Ventilator (Sham), Portable Air Cleaner (Sham)
- Device
- Lead sponsor
- The University of Texas at Arlington
- Other
- Eligibility
- 5 Years and older
- Enrollment
- 80 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2025 – 2028
- U.S. locations
- 2
- States / cities
- Arlington, Texas • Plano, Texas
- Conditions
- Heart Failure
- Interventions
- PAC provision at hospital discharge, Control non-intervention; PAC without filter
- Other
- Lead sponsor
- Henry Ford Health System
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 400 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2023 – 2027
- U.S. locations
- 1
- States / cities
- Detroit, Michigan
- Conditions
- Asthma
- Interventions
- Stand Alone Air Cleaner, HVAC Modification
- Other
- Lead sponsor
- University of California, Davis
- Other
- Eligibility
- 6 Years to 12 Years
- Enrollment
- 219 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2012 – 2017
- U.S. locations
- 1
- States / cities
- Davis, California
- Conditions
- Chronic Obstructive Pulmonary Disease (COPD)
- Interventions
- HEPA Air Cleaner, Sham HEPA Air Cleaner
- Device
- Lead sponsor
- Johns Hopkins University
- Other
- Eligibility
- 40 Years and older
- Enrollment
- 142 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2014 – 2021
- U.S. locations
- 1
- States / cities
- Baltimore, Maryland
- Conditions
- Respiratory Tract Diseases, Cardiovascular Diseases
- Interventions
- DIY portable air cleaner with a highly effective filter, DIY portable air cleaner with sham filtration
- Other
- Lead sponsor
- Environmental Protection Agency (EPA)
- Federal
- Eligibility
- 18 Years and older
- Enrollment
- 80 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2023
- U.S. locations
- 1
- States / cities
- Fresno, California
- Conditions
- Viral Infection
- Interventions
- Active classroom HEPA cleaner, Sham classroom HEPA cleaner
- Other
- Lead sponsor
- Massachusetts General Hospital
- Other
- Eligibility
- 6 Years to 90 Years
- Enrollment
- 200 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2024 – 2030
- U.S. locations
- 1
- States / cities
- Boston, Massachusetts