Study on indoor cleaning effect by air purifier and the influence on asthma

Study on indoor cleaning effect by air purifier and the influence on asthma - Study on indoor cleaning effect by air purifier and the influence on asthma

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000025330

Enrollment

Registered

2017-01-24

Start date

2017-01-25

Completion date

Unknown

Last updated

2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Bronchial asthma

Interventions

With air purifier Without air purifier

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: Patients with bronchial asthma patients visiting Ikebukuro Otania clinic

Exclusion criteria

Exclusion criteria: (1) Complicated patients with other respiratory diseases (lung cancer, interstitial pneumonia etc). (2) Persons who have severe liver, kidney, heart, or blood disease, other serious complications. (3) Person who the doctor judged unsuitable as the subject.

Design outcomes

Primary

Measure	Time frame
airborne dust, mite antigen, fungus, pulmonary function and asthma control of the patients	—

Countries

Japan

Contacts

Public ContactYuki Sumi

Tokyo Medical and Dental University Department of Clinical information Applied Sciences

ysumi.pulm@tmd.ac.jp03-3813-6111

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026