… , and multiple pollutants. Here we present a synopsis of the methodological issues and …
standardized methodological approach to disentangle true differences in associations from …

… issues involved in these studies, discusses the problems that … example, using data on air
pollution and hospital admissions … air pollution raises distributional issues and modelling issues…

… and sources of air pollution, and the common terms in epidemiological studies of air pollution.
Then we reviewed the study design and critically evaluated methodological approach to …

… of studies linking air pollutants to low birthweight, … key methodological issues surrounding
this research area, based on our experiences in Southern California. All ‘criteria’ air pollutants …

… for criteria air pollutants raises problems and issues that … Because there may be thresholds
for the effects of air pollutants … epidemiology studies of criteria air pollution is countered by an …

… Furthermore, as described by Wallace and Ott, 42 there are also several methodological
issues for personal monitoring. For instance, the method is labor-intensive, time consuming, …

… Abstract -This paper addresses methodological issues in the estimation of travel-related …
emissions of air pollutants. These findings are analyzed as well. Travel impacts examined …

… methodologically simple studies that evaluated day-to-day changes in mortality associated
with air pollution were studies that focused on severe air pollution … and after pollution episodes…

… studies with low air pollution concentrations defined as those … exposure to low levels of air
pollution led us to exclude these … , prenatal air pollution, Air Quality Index, pollutants other than …

… The crucial methodological problems of purely ecologic studies are qualitatively and
quantitatively different from individuallevel studies (Table 3). The validity of ecologic studies for …