Our results were consistent for both estimated current and measured enrollment PBB concentrations.
At enrollment, serum concentrations of thyroid stimulatory hormone (TSH), antibodies to thyroid peroxidase (TPOAb) and free thyroxine (FT4) were measured and thyroid ultrasound performed.
Because some parents in the present study did not have their enrollment PBB concentration measured before the birth of their offspring, the decay model extrapolated backwards for those offspring born before their parent's PBB concentrations were measured.
Enrollment in these concentrations is increasing, especially within biology, but computer science undergraduates appear to be less interested.
Upon enrollment, couples' serum concentrations (ng/g) were measured for 9 organochlorine pesticides, 1 polybrominated biphenyl, 10 polybrominated diphenyl ethers, and 36 polychlorinated biphenyls (PCBs).
With regard to exposures, each letter contained a standardized 5-column table that first listed the name of the environmental contaminants, the woman's individual concentration upon enrollment into the cohort, mean concentrations for two referent populations, and a column noting that lead was the only contaminant for which a known concentration was indicative of a health alert (see Table 1).
When the data were analyzed overall, by univariate analysis (Supplementary Table 3), significant associations with maternal plasma triglyceride concentrations at enrollment were gestational age (P < 0.001), enrollment HbA1c (P < 0.001), plasma glucose (P = 0.01), smoking (P = 0.002), and diastolic blood pressure (P = 0.05).
At enrollment, drinking-water As concentrations ranged from < 1 to 230 μg/L with a median concentration of 1.2 μg/L.
Eriksen et al. (2009) enrolled 57,053 cancer-free Danish adults 50 65 years of age; they measured PFOA plasma concentrations during enrollment and followed participants for approximately 10 years for incident prostate, pancreas, liver, and bladder cancers.
Generalized linear models were used to estimate the association between maternal micronutrient concentrations (at enrollment) and birth weight as well as age 3 WG [ 38] (a priori two-sided p ≤ 0.05).
