A Citizen-Science Study Documents Environmental Exposures and Asthma Prevalence in Two Communities

Abstract EN

A citizen-science study was conducted in two low-income, flood-prone communities in Atlanta, Georgia, in order to document environmental exposures and the prevalence of occupant asthma.

Teams consisting of a public-health graduate student and a resident from one of the two communities administered a questionnaire, inspected residences for mold growth, and collected a dust sample for quantifying mold contamination.

The dust samples were analyzed for the 36 molds that make up the Environmental Relative Moldiness Index (ERMI).

Most residents (76%) were renters.

The median duration of residence was 2.5 years.

Although only 12% of occupants reported a history of flooding, 46% reported at least one water leak.

Homes with visible mold (35%) had significantly ( P < 0.05 ) higher mean ERMI values compared to homes without (14.0 versus 9.6).

The prevalence of self-reported, current asthma among participants was 14%.

In logistic regression models controlling for indoor smoking, among participants residing at their current residence for two years or less, a positive association was observed between asthma and the homes’ ERMI values (adjusted odds ratio per unit increase in ERMI = 1.12, 95% confidence intervals (CI): 1.01–1.25; two-tailed P = 0.04 ).

Documentation of the exposures and asthma prevalence has been presented to the communities and public officials.

Community-based organizations have taken responsibility for planning and implementing activities in response to the study findings.