Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Identifying a Susceptible Subgroup: Effects of the Pittsburgh Air Pollution Episode Upon School Children.
Author Stebbings, Jr., James H. ; Fogleman, Diane G. ;
CORP Author Health Effects Research Lab., Research Triangle Park, NC. Population Studies Div.
Year Published 1978
Report Number EPA/600/J-79/041;
Stock Number PB80-123409
Additional Subjects Children ; Asthma ; Air pollution ; Schools ; Exposure ; Respiratory diseases ; Reprints ; Air pollution effects(Humans) ; Pittsburgh(Pennsylvania) ; Particulates ; Respiratory function tests ; Large volume measurements ; Allegheny County(Pennsylvania) ; Environmental health
Library Call Number Additional Info Location Last
NTIS  PB80-123409 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/23/1988
Collation 14p
Pulmonary function test results on 224 parochial schoolchildren collected during and after the Pittsburgh air pollution episode of November 1975 were reanalyzed to determine whether a small subgroup of susceptible children could be defined. Individual regressions of three-quarter second forced exploratory volumes (FEV.75) and forced vital capacities (FVC) on time over the six-day study period were calculated, and the distributions of individual slopes for the four exposed and two control schools were compared. Excesses of strong upward trends in the exposed areas would suggest effects of suspended particulate air pollution by indicating significant improvement following the episode. A highly statistically significant excess of strong upward trends in the FVC among exposed students was observed, and was consistent by sex and by school within sex. Approximately 10-15% of the students appear susceptible to an average impairment of about 20% of the FVC. The findings are limited by the small number of subjects with strong post-episode upward trends in the FVC, and by lack of validation by replication of the study design, but do suggest that episode levels of suspended particulates induce lung damage, and that this may occur only in a small susceptible subgroup. Children with low baseline pulmonary function values, histories of asthma, or with acute respiratory symptoms immediately following the episode were not found to be especially susceptible to these effects of suspended particulates.