The Improvement of Indoor Air and Health Effects After Air Purifier Intervention Among Susceptible Population in Industrial Area

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

140 participants

Study Classification

INTERVENTIONAL

Study Start Date

2022-06-29

Study Completion Date

2025-06-01

Brief Summary

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Invesitigators conducted a double-blind, randomized, and crossover study to investigate the effects of PCO and PCO + filters interventions on indoor air pollutants in households and health outcomes in susceptible group, such as asthma and COPD patients.

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Detailed Description

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Invesitigators measured indoor air pollutants, including particulate matter, bioaerosols, gaseous pollutants, in households and health outcomes, including lung function, respiratory symptoms, fractional exhaled nitric oxide, blood pressure, biomarkers, urinary heavy metals, and polycyclic aromatic hydrocarbons, in susceptible group, such as asthma and COPD patients.

Conditions

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Asthma (Diagnosis) COPD (Chronic Obstructive Pulmonary Disease)

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

CROSSOVER

a double-blind, randomized, and crossover study

Primary Study Purpose

OTHER

Blinding Strategy

TRIPLE

Participants Investigators Outcome Assessors

Study Groups

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photocatalytic oxidation intervention

Group Type SHAM_COMPARATOR

Air purfiers with photocatalytic oxidation (PCO)

Intervention Type OTHER

PCO was proved to decompose gaseous pollutants in chamber studies, while there is no study investigate the effects in real-world. We used PCO air purifiers in households for two weeks.

photocatalytic oxidation and filters intervention

Group Type ACTIVE_COMPARATOR

Air purfiers with photocatalytic oxidation (PCO) + filters

Intervention Type OTHER

PCO was proved to decompose gaseous pollutants in chamber studies, while there is no study investigate the effects in real-world. We used PCO and filters air purifiers in households for two weeks, to understand the effects comparing with PCO.

Interventions

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Air purfiers with photocatalytic oxidation (PCO)

PCO was proved to decompose gaseous pollutants in chamber studies, while there is no study investigate the effects in real-world. We used PCO air purifiers in households for two weeks.

Intervention Type OTHER

Air purfiers with photocatalytic oxidation (PCO) + filters

PCO was proved to decompose gaseous pollutants in chamber studies, while there is no study investigate the effects in real-world. We used PCO and filters air purifiers in households for two weeks, to understand the effects comparing with PCO.

Intervention Type OTHER