NCT07069907

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

• Status: Completed
• Phase: N/A
• Study type: Interventional
• Enrollment: 140 (actual)
• Sponsor: Kaohsiung Medical University Chung-Ho Memorial Hospital · Academic / Other
• Sex: All
• Age: 18 Years – 90 Years
• Healthy volunteers: Not accepted

Summary

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.

Detailed description

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

• Asthma (Diagnosis)
• COPD (Chronic Obstructive Pulmonary Disease)

Interventions

Type	Name	Description
OTHER	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.
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.

Timeline

• Start date: 2022-06-29
• Primary completion: 2025-06-01
• Completion: 2025-06-01
• First posted: 2025-07-17
• Last updated: 2025-07-17

Locations

1 site across 1 country: Taiwan