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Indoor Air Quality and Respiratory Symptoms in Former Smokers

NCT02956213 · Status: COMPLETED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 52

Last updated 2019-06-13

No results posted yet for this study

Summary

The investigators will conduct a randomized, controlled, double-blind, crossover trial to determine whether the presence of a portable high-efficiency indoor air filter in the bedroom reduces respiratory symptoms in former smokers compared with placebo. The primary outcomes will be change in St. George's Respiratory Questionnaire - COPD (SGRQ-C) score associated with using a portable high-efficiency indoor air filter during the study period. Secondary outcomes of COPD exacerbations and hospitalizations, daily step counts, medication changes, spirometry, and cardiovascular outcomes will also be assessed.

Conditions

Interventions

OTHER

HEPA portable air filter

A high efficiency (MERV17) portable air filter (HEPA portable air filter) will be placed in the subject's bedroom and will run 24/7 for the duration of the study.

OTHER

Sham Control/Active Comparator

A portable air filtering device will be placed with no high-efficiency air filter, but only the basic carbon filter in place. Then at cross over, there will be an active HEPA portable air filter used

Sponsors & Collaborators

  • Intermountain Health Care, Inc.

    lead OTHER

Principal Investigators

  • Denitza Blagev, MD · Intermountain Health Care, Inc.

Study Design

Allocation
RANDOMIZED
Purpose
PREVENTION
Masking
TRIPLE
Model
CROSSOVER

Eligibility

Min Age
40 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2016-11-30
Primary Completion
2019-05-15
Completion
2019-06-30

Countries

  • United States

Study Locations

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Entities

Diseases

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT02956213 on ClinicalTrials.gov