In former smokers with COPD, HEPA and carbon filter air cleaners improved moderate exacerbations but not QoL.

Steinberg, Daniel I · Ann Intern Med · 2022

rct · Level II

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Abstract

Hansel NN, Putcha N, Woo H, et al. <b>Randomized clinical trial of air cleaners to improve indoor air quality and chronic obstructive pulmonary disease health: results of the CLEAN AIR study.</b> Am J Respir Crit Care Med. 2022;205:421-30. 34449285.

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