In early 1976, a survey of persistent cough and phlegm ( @entity212 ) prevalence was conducted in 5,623 young adults in 4 Utah communities. Over the previous 5 years, community-specific mean @entity9733 levels had been 11, 18, 36, and 115 micrograms/m3. Corresponding mean suspended @entity597 levels had been 5, 7, 8, and 14 micrograms/m3. No intercommunity exposure gradient of total suspended particulates or suspended @entity3362 was observed. In nonsmoking mothers, @entity212 prevalence was 4.2% in the high-exposure community and approximately 2.0% in all other communities. In smoking mothers, @entity212 prevalence was 21.8% in the high-exposure community and approximately 15.0% elsewhere. In nonsmoking fathers, @entity212 prevalence was 8.0% in the high-exposure community and averaged 3.0% elsewhere. In smoking fathers, @entity212 prevalence was less strongly associated with ambient @entity69187 exposure. Intercommunity prevalence differences in smoking and nonsmoking mothers, and in nonsmoking fathers, were significant at alpha = 0.05. A categorical logistic regression model, testing simultaneously for effects of community and several covariates on @entity212 prevalence, yielded similar results. The results of this survey were similar to those of a similar survey conducted in Utah in 1970 and to those of other surveys. These results disclose an association of @entity212 prevalence with ambient @entity69187 exposure, stronger in mothers than in fathers, stronger in nonsmokers and ex-smokers than in smokers, and stronger in 1970 than 1976.

Prevalence of persistent cough and phlegm in young adults in relation to long-term ambient XXXX exposure.

@entity3362 :: ('MESH:D009566', 'Chemical') :: ['nitrates'] @entity212 :: ('CHEBI:8058', 'Chemical') :: ['PCP'] @entity9733 :: ('MESH:D013458', 'Chemical') :: ['sulfur dioxide'] @entity69187 :: ('MESH:C405951', 'Chemical') :: ['sulfur oxide'] @entity597 :: ('CHEBI:16189', 'Chemical') :: ['sulfate']
@entity69187 :: (MESH:C405951,Chemical) :: ['sulfur oxide']
