Effectiveness of portable HEPA air cleaners on reducing indoor PM_2.5 and NH₃ in an agricultural cohort of children with asthma: A randomized intervention trial.

ABSTRACT: We conducted a randomized trial of portable HEPA air cleaners with pre-filters designed to also reduce NH₃ in non-smoking homes of children age 6-12 with asthma in Yakima Valley (Washington, USA). Participants were recruited through the Yakima Valley Farm Workers Clinic asthma education program. All participants received education on home triggers while intervention families additionally received two HEPA cleaners (child's sleeping area, main living area). Fourteen-day integrated samples of PM_2.5 and NH₃ were measured at baseline and one-year follow-up. We fit ANCOVA models to compare follow-up concentrations in HEPA vs control homes, adjusting for baseline concentrations. Seventy-one households (36 HEPA, 35 control) completed the study. Most were single-fa

SUBMITTER: Riederer AM 

PROVIDER: S-EPMC8641645 | biostudies-literature | 2021 Mar

REPOSITORIES: biostudies-literature