The outcome will appear as heterogeneity (potentially quite severe) in susceptibility, when viewed statically at a single point in time as when epidemiologists determine the momentary incidence and compare the exposure histories of study subjects.
For analysis, we subtracted preexposure values from 1 hr and 20 hr postexposure values and compared the air exposure differences with the CAP exposure differences for each person.
And then, we compared the exposure dose rates for each scenario with a draft supplementary safety goal, 10 mSv/yr, which was suggested by the regulatory body in Korea.
Many studies have compared the exposure of cyclists to those taking other modes of transport and compared exposure differences between backstreet routes and main roads.
There has also been a selected few studies that have profiled genomic changes and compared the responses following exposure of cells to different radiation types [ 22, 23].
Using this information, we evaluated genotype-smoking interactions by likelihood ratio test, and compared the contributions of total exposure (pack-years) and intensity (cigarettes per day) of smoking using the linear-exponential model for smoking excess odds ratio (EOR) [54].
To determine how best to assess exposure to infectious PTB patients that may predict the development of active TB during the follow-up period after discharge; we developed a semi-quantitative index of overall TB exposure, and compared the performance of three measurements.
To objectively document levels of exposure to SHS in hospitality venues across Europe and to compare the exposure among these cities regulated with different policies, we measured airborne nicotine concentrations in hospitality venues in 10 European cities using a common protocol.
Because so few of our participants had exposures exceeding this limit, and those who did exceed the limit did not do so by much, we chose to dichotomize the exposure variables and compare the top 50th exposure percentile to the bottom 50th exposure percentile in preliminary analyses.
We used a test for trend across ordered groups for comparing levels of NO2 among age and socioeconomic categories, and a t-test for comparing the exposure levels between genders.
