Exact(3)
"High" exposure subgroups were defined as elsewhere.
Interestingly, we found significant negative correlations between levels of lymphocyte Hsp70 and the levels of various cell damage in the intermediate or high exposure subgroups.
10 In Porton Down veterans with exposure to sulphur mustard, there was an 8% excess mortality from respiratory cancers and a 2% excess from non-malignant respiratory diseases, but these were not statistically significant and the findings in the "high" exposure subgroups were inconsistent.
Similar(57)
First, we estimated genetic associations with U-Hg for all persons in a country with adjustment for exposure subgroup (controls, low or high exposure) as categorical (nominal) variables, and after stratification by low or high exposure subgroup.
Cordier et al. (2002), in a study of children 9 to 12 years of age, found an association between scores on one test and MeHg exposure, but this did not appear in separate analysis of the highest exposure subgroup.
The difference between both summaries was not caused by study selection but by the specific focus on high-exposure subgroups in Schwilk et al. (2010).
Participants in the high-exposure subgroups were living in the same areas as the low-exposure participants but were working as miners with immediate contact with Hg such as panning the crushed ore together with liquid Hg or smelting the amalgams.
The incidences among the control, low-, and high-exposure subgroup A rats were 0 of 6, 3 of 6, and 6 of 6, respectively.
Such results suggest that, given a larger population of highly exposed subjects, it is possible that statistically significant differences might have emerged between high and low exposure subgroups within the 2006 Kurttio et al. study.
Workers were divided into two exposure subgroups: "high" (median 18 ppm, range 5-112ppm, n=16) and "low" (median 1ppm; range <5ppm, n= 16); duration of exposure was not reported.
Within our population, subgroups of high exposure were identified as described above.
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