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

Air purifiers significantly decreased the levels of PM0.3, 2.5, and 5.0 in closed bedrooms. However, there were no significant differences in the number of cultured fungal colonies and mite antigen level. Spirometry, FOT and FeNO measurements results did not significantly too. Hence, the patients consistently had good asthma control. The intervention group experienced a significant improvement in the ACT score. The changes in treatment steps between the two groups did not significantly differ.