We made use of all standard markers of exposure to ambient air pollution developed by the standardized land use regression models (LUR) of ESCAPE (Cyrys et al. 2012; Eeftens et al. 2012).
The required image processing functions involved with "standard concepts of exposure control" are, for example, iris control, sensor integration time and gain control.
B y′-yb, y-yB y′-yb relative risk that compares the effect of unit exposure at age, y-ybb, to the effect at a standard age of exposure, say 1-years old.
Rather than define the baseline of B as a single exposure in a particular year, the baseline can be defined relative to a standard distribution of exposure over a time period.
Our finding of a consistent, strongly right-skewed distribution of traffic doses, associated with heavily trafficked intersections, means that non-standard distributions of exposure must be anticipated in studying traffic emissions.
As we do not comment on the accuracy of the ImageJ method in comparison to a gold standard assessment of exposure, this limitation of our study does not have a major impact on our findings.
Prevalence (standard error) of exposure to at least one lifetime PTE was 73.8% (1.15) in the total sample, while the average person exposed to any lifetime PTE reported an average of 4.3 occurrences, for a total of approximately 13,700 lifetime PTEs experienced by the 4,315 SASH respondents (Table 1).
We evaluated the study quality by allocating 1 score for each of the following aspects: selection bias, standard measures of exposure and outcome, participation rate in cross-sectional studies or follow-up rate in cohort studies, adjustment for important confounding factors (socioeconomic status and lifestyle variables), and generalizability.
The purpose of this study is to evaluate the influence of the new version of the French NF S31-084 standard of noise exposure measurement on the calculation of occupational noise exposure determined by personal dosimetry in the field of aeronautical maintenance.
However, more studies and homogeneous standards regarding assessment of exposure and outcome variables and statistical analyses are needed.
