Surprisingly, we are unable to do so: by following the exact procedures used in the original studies we show that both prognostic biomarkers tested actually validate in the Director's Challenge cohort [ 21].
The study showed that some genes with high posterior scores are actually validated as true associations in later studies, although they do not have highest prior scores (e.g., lowest p values in GWAS studies) and would possibly be ignored in two-stage studies.
Yet, due to the obvious practical and ethical issues associated with human clinical studies, very little causality has actually been validated in humans.
"We purport to be the best, and it's nice to see that actually validated," Mr. Maas said.
And yet it seemed fair to question whether anything about this sudden movement actually validated Obama's central argument about American politics — this notion that the cultural fault line in the electorate can somehow be bridged by a generational change in leadership — or whether it spoke to some more immediate, more desperate impulse in a shaken electorate.
It actually validated, many points I felt very validated.
Since the two transformations used the same principle, only the first transformation is actually validated.
There is also a surprising disparity between the substantial financial and logistic efforts invested in reagents and man hours to develop immune monitoring techniques and the comparatively minor investment made to date in actually validating and standardizing the available techniques within and between laboratories.
This method has been validated [ 19- 23] and is thought to be suitable for body composition studies in diverse populations [ 22- 25], correlates well with the 'gold standards' of dual-energy x-ray absorptiometry and hydrostatic weighing [ 23], and is widely used in RA research [ 5, 12, 24, 26, 27], but it has not actually been specifically validated in the RA population.
The harsh reality is that science actually validates your fears: many of the items in your bathroom can harbor tons of bacteria, and you don't even know it.
