Neither variations in a patient's blood volume, the number of nurses making observations, nor large variations in the nurses' estimates alter the facts that multiple observations were obtained from some patients and multiple predictions were made by some nurses.
This estimate was altered by the French the next day to 600 killed or wounded and 900 captured, and it was suggested that the operation did "not appear to have been successful".
The results of such a model are shown in Figure 2. The point estimate is altered slightly using the random effects model because the weights given to each trial are different and more weight is given to the smaller trials.
Interaction terms were included in multivariate regression models if the interaction term was significant at the p ≤ 0.05 level and confounders if the OR or the point estimate was altered by ≥ 15%.
The O3 and PM10 effect estimates from two-pollutant models were similar to the effect estimates from the single-pollutant models, but the NO2 estimates were altered (Additional file 4: Table A).
We additionally evaluated the relations of serum wet-weight concentrations of DDE, DDT, and HCB, without lipid adjustment or lipid standardization, and outcomes, and effect estimates were altered negligibly (data not shown).
Clearly, for such small quantities of DNA, slight variations in pipetting accuracy and/or DNA concentration estimate might alter the final sensitivity data.
Future studies should assay additional AIMs to test whether improving the precision of ancestry estimates alters the pattern of findings we report here.
The estimate was not altered significantly when the analysis was restricted to women over 50 years of age at diagnosis or reference date; OR=9.9 (95% CI=1.2 78.8).
However, as missing data was low in this study (<1% for most variables), the listwise deletion of missing data is unlikely to affect the estimates or alter the conclusions reached.
