Effect of air purification and humidification on asthma.

Effect of air purification and humidification on asthma. - Effect of air purification and humidification on asthma.

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000045958

Enrollment

Registered

2021-11-02

Start date

2021-11-01

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

asthma

Interventions

use of air purifi cation use of air purifi cation and humidifi cation

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: 1)Males and females aged 12 years or older attime of informed consent. 2)Informed written consent from patients or authorized guardians. 3)Patients who have not used an air purifi er orhumidifi er in the last 3 months. 4)Patients who have been diagnosed with asthma and have visited a medical institution within one year.

Exclusion criteria

Exclusion criteria: 1)Patients who have a history of other respiratory disease(lung cancer, interstitial pneumonia, etc.). 2)Smokers, households with smokers. 3)Patients who have serious or unstable liver,kidney, digestive, respiratory, cardiovascular (including ischemic heart disease), endocrine, neuro logical, psychological, immune or blood disorders that may aff ect the study.

Design outcomes

Primary

Measure	Time frame
Association of asthmatic symptoms with use of the air purifi cation alone and with humidifi cation function.	—

Countries

Japan

Contacts

Public ContactTomohiro Yabu

DAIKIN (CHINA) INVESTMENT CO., LTD. OPEN INNOVATION LAB. SHENZHEN R&D DEPT.

tomohiro.yabu@daikin.co.jp+86-188-2691-1831

Outcome results

None listed

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