This reduction in bias has been attributed to the characteristics of the populations from which the CKD-EPI and the MDRD equations were derived, with the mean measured GFR levels being 68 and 40 ml/min/1.73 m in these respective populations [ 1, 4].
We further limited our review to studies of low-dose mercury exposures, that is, we excluded analyses of the poisoning episodes in Japan and Iraq, as well as studies of popu-la-tions with mean measured mercury levels above any of the following: 4 µg/g in hair; 20 µg/L in cord blood, or approximately 12 µg/L in adult blood.
Furthermore, the ratios of mean measured hair Hg level to calculated daily exposure differ by a factor of > 10 between the Innu and the Lake St . Pierrecohort and a factor of 7 between the Innu and the Abitibi cohort, which contradicts the constant relation between exposure and hair Hg levels expected according to accepted theories.
We found only weak correlations between external calculated E-field levels and internal measured levels (r=0.05 for the mean of all the spot measurements, r=0.08 for the mean of the bed spot measurements, using log-transformed data, for the 47 subjects with validated measurements who lived sufficiently close to a line to have a field calculated).
Higher measured levels of gold on the surface means there is less contamination surface, demonstrating the effectiveness of the electrochemical cleaning protocol.
The measured levels range from two to 1000 times normal background radiation and residents, officials, and scientists wonder what that may mean for public health.
The accuracy was calculated as (mean measured concentration/nominal concentration)×100, and the precision was expressed by the RSD at each concentration level.
The measured levels of carbon dioxide (CO2, 11.6 ± 6.2 mg/L) and total ammonia nitrogen (TAN, 499 ± 485 μg N/L) (mean ± SD), exceed current legislative recommendations in 30%andd 10.5% of the cases, respectively.
The predicted levels are in good agreement with measured levels.
Only 14 of the contaminants are regulated, and none of the measured levels violated safety regulations.
