The association between specific exposure pathways and radiographic abnormalities has been reported 19 20 24–26 Scant information has been published on overall responses to exposure, for example, access to healthcare 27 and psychosocial ramifications 28 in this population.
A commonly used approach in the realm of studying environmental exposures in relation to preterm birth is to examine multiple cross-sectional models, e.g., the relationship between trimester specific exposure levels in association with preterm birth [ 8, 9, 11, 12].
In addition, new congeners of well-known toxins are being identified, making the association between a specific exposure and a specific health outcome in some cases difficult to assess [ 6- 8].
This applies to study findings concerning both absolute measures of frequency (e.g. the proportion experiencing a particular outcome at a point in time or within a given period of observation) and measures of association (e.g. the relationship between a specific exposure or risk indicator and a particular outcome).
Investigating the relationship between specific exposures and outcomes of critical care medicine is challenging due to complex interactions between patient physiology, psychosocial status, and the corresponding healthcare delivery.
Evidence to date suggests that asthma induction is the result of complex interactions between specific exposures and the genes that interact with such exposures during crucial periods in the natural history of the disease.
When outbreaks with universal exposure are investigated, it is difficult to explore the possible association between illness and that specific exposure by using conventional epidemiologic and environmental approaches.
In this industry, the association between job and specific exposure-related duties has remained stable over time, and the dates of diesel and other equipment use are known (Garshick et al. 2002).
Second, mother's BP, infant birth weight, and gestational age could be mediators in the association between trimester-specific exposure to air pollution and newborn BP.
These results indicate a connection between specific exposures and biological responses, especially for the genes in clusters 4 6 that were clearly associated with immunological response, inflammation and the cytokine network.
