The UK electoral roll is one possible sampling frame but this holds very little demographic information and has long been acknowledged to be a biased sampling frame because it excludes foreign nationals and those choosing not to register.
One possible sampling strategy proposed in Strauss et al. (2003) for the detailed exposure study is randomly selecting and recruiting a subsample of participants < 10% of the full cohort, say, about 1,000 5,000 participants among women planning pregnancy or in early stages of pregnancy.
One possible reason, Dr. Sample said, is that as federal laws have clamped down on illegal meth, drug users have turned to alternative — and easier to obtain — stimulants.
One possible example of superselective sampling is shown in Table 4 (sample 9).
Among the preliminary results is a large optical detection rate, the lack of extremely red objects (only one possible case in the sample) and an update of the Swift GRB redshift distribution with ⟨z⟩∼2.0.
There is one possible exception to this, sample DK0124right.
As our technique is phase-sensitive and therefore requires high mechanical stability of the sample, one possible factor confounding intersubject comparisons is different severities of motion artifacts in different animals.
This value is indicative of at least partially degraded RNA within the sample; one possible reason for the reduced RNA integrity may be the procedure utilized to remove the gyrus frontalis superior region from the frozen tissue slide.
However, due to the non-unique number of solutions of the underlying linear system (Eq.1), reported results have to be interpreted cautiously, more as a suggestive and intuitive representation of one possible evolutionary summary of the sample, rather than the true representation of the subclonal composition of the sample.
With respect to sample treatment, one possible explanation could be that different extraction procedures were applied.
