The Nutritional Biochemistry Branch at the Centers for Disease Control and Prevention in Atlanta did the blood lead analyses by atomic absorption spectrometry based on the methods described by Miller et al. (1987).
Scientific investigations of structures characterised by auxetic properties conducted so far have led to analyses on a molecular and macroscopic scale and few studies have been concerned with descriptions of auxetic models which could find application in objects of everyday use.
We therefore need to refute popular 'push-pull' models, as they lead to misleading analyses on the nature, causes and future of migration.
This leads to analyses based on 247 cases for E-alone, 471 cases for E+P, 428 cases for DMQ, 1,049 cases for CaD (cases arising after CaD randomization only), and corresponding controls that were one-to-one matched to cases on baseline age, self-reported ethnicity, participation in each trial component, years since randomization, and baseline hysterectomy status.
Of note, only 65.6% of the Proteobacteria a phylum including many medically important bacterial pathogens could be classified to the genus-level, which led us to perform subsequent analyses on the family-level (unless otherwise specified).
The coefficient of variation was 2.8%, and the relative bias was +3.1% for the lead reference specimen analysed on 10 different days (consensus median value from participating laboratories = 0.6 μmol/L).
As described in our original article (Lanphear et al. 2005), we decided a priori to focus our analyses on the blood lead (BPb) variable that had the strongest association with IQ (intelligence quotient) scores.
Cornell's Diagnostic Endocrinology Laboratory conducted hormonal analyses on samples collected for a study led by the National Oceanic and Atmospheric Administration.
Cornell's Diagnostic Endocrinology Laboratory conducted hormonal analyses on samples collected by a group of scientists and veterinarians led by Lori Schwacke, a NOAA scientist and the paper's first author.
PLC took the lead on data analyses.
