P B Ryan

..We discuss these results with respect to their implications for future exposure assessment research, quantitative risk assessment, and environmental epidemiology...

..However, the association between many biomarkers and outcome is not direct because of variability in sensitivity and susceptibility in the individual...

..180, 0.206, and 0.076 for As, Cd, and Pb, respectively (p < 0.0001 in all cases). We discuss the significance of these observations and the implications for dietary-exposure-based risk analysis and dietary intake epidemiology...

..The measurements of pesticide levels in duplicate plate samples presented here can be used to evaluate and set parameters for dietary exposure models...

..5 EC and PM2.5 OM. While covariation of many of the air quality indices limits the informativeness of this analysis, the study provides one of the first assessments of PM components in relation to ED visits...

..Research is needed to quantify the potential difference...

..S. National Health and Nutrition Examination Survey (NHANES) 1999-2002. NHANES also includes 24-hr diet data and information on household pesticide use, activities, occupation, demographics, and other exposure factors...

..This time-series study examined the relation between ambient air pollution and cardiovascular conditions using ambient air quality data and emergency department visit data in Atlanta, Georgia, from January 1, 1993, to August 31, 2000...

..Although our small sample size limits comparison to other studies, our results provide evidence that residential soil is a potential source of human exposure to both current and historically used pesticides...

..Results show frequent dietary exposure of our participants to the target pesticides from a range of food types...

..Confirmatory analysis was performed by GC coupled with mass spectrometry (MS) in the selected-ion monitoring (SIM) mode. Average recoveries for each fortification level ranged from 49 to 146% with 80% of recoveries between 80 and 120%...

..More refined assessment has been limited by study size and available air quality data...

..Criteria for the analytical method of choice are discussed with particular emphasis on the need for long-term quality control and quality assurance measures...

..Increasing available natural ventilation within the household in similar settings has the potential to reduce childhood mortality because of acute lower respiratory illnesses...

..These results demonstrate a strong association between community arsenic containing dust exposure and peripheral neuropathy among participants in this investigation...

..67-2.34) comparing those with the lowest versus highest exposure index. CONCLUSIONS: Risk of childhood brain cancers may be associated with living near a TRI facility ; however, this is an exploratory study and further studies are needed...

..The elevated pollution concentrations present and the diesel-rich nature of motor vehicle emissions are important pertaining to human exposure and health information and as such warrant public health concern...

..These findings are contrasted with those in the Mt. Washington study to examine the hypothesis that pulmonary health effects are associated with exposure to O3 and PM2.5 in healthy adults engaged in moderate exercise. ...

..Since the regression models explained only 1-37% of the within-person variance, the questionnaires in this study provided only modest insight into the factors responsible for the temporal variability in the contaminant levels...

..Asthma, for example, disproportionately affects lower-income urban communities, where air pollution and social stressors may be elevated...

..03) had moderate to weak reliability. Exposure to chlorpyrifos through those media and in aggregate based on direct measurements reported in this study can be used to understand better the accuracy of pesticide safety assessments...

..This mini-monograph discusses the strategies used to assess pesticide exposures, presents limitations in the available data for farmworkers, and suggests research needs for future studies of pesticide exposure among farmworker families...