There were generally close to equal numbers of cases and controls per farm, except for a bias for more controls from farms with a higher prevalence to increase the probability of exposure to infection.
PiRNAs are very diverse: hundreds of thousands of unique piRNA sequences do not show any structure or sequence motif similarities, except for a bias for a uridine residue at the first base (Le Thomas et al., 2014).
After recalibrating the model with the respective TMPA data, significant improvements are observed for 3B42V6 across all categories, but not as much enhancement for the already-well-performing 3B42V7 except for a reduction in bias (from −26.98% to −4.81%).
Figures 2, 3, 4, 5 show that whether three or four factors affect a trait, even if data is generated from a model that is not one of the three identified models (F cases), the results of biases and standard deviations of the estimates are not much larger than in the T cases, except for the biases for the A factor.
For the remaining methods, differences are indeed largely non-significant except for the bias.
These findings indicate that, except for mutation bias, other factors (such as selection) may have contribution to the codon usage.
34 All the analyses will be conducted using MADIS module of Stata V.10 (Stata Corp ,College Station, Texas, USA), except for publication bias using Meta-Analyst β 3.13 (Tufts Medical Center, Boston, Massachusetts, USA), and meta-regression and threshold analysis using Meta-DiSc V.1.4 (Clinical Biostatistics Unit, Ramón y Cajal Hospital, Madrid, Spain).
Except for a few cases, the percent bias for total As quantification was ≤ 10% across the calibration standards and QC check standards.
The funnel plots showed no major asymmetry except for a small degree of publication bias, with a slight under-representation of small studies showing neutral or unexpected protective effects (see web extra fig 2).
However, we observed almost no variation in biases across the centers, except for bias in potassium intake in men.
When the models contained a linear confounder Z, the two models yielded comparable relative biases (Table 1, Figures 1A and B) except for a few scenarios in which the biases from the log-binomial models were slightly larger than those of the robust Poisson models.
