Well-conducted observational studies, though discounted in value by the IARC report, are complementary to clinical trials and in many cases will provide the only obtainable evidence of benefit or harm associated with specific exposures.
Before embarking on the time and expense of a clinical trial, however, any additional, and more easily obtainable, evidence that the observed drug effect in vitro will also be observed (or not) in vivo would be of paramount importance.
But until labour markets are freed, tight macroeconomic policy is one of those shocks that can only make things worse.* "The Role of Shocks and Institutions in the Rise of European Unemployment: the Aggregate Evidence", obtainable from web.mit.edu/blanchar/www.edu/blanchar/www
Among other things, the measure would require agencies to have new "procedures in place to make policy decisions only on the basis of the best reasonably obtainable scientific, technical, economic, and other evidence and information concerning the need for, consequences of, and alternatives to the decision".
However correlation at least suggests that whatever two correlated indicators are measuring it is the same thing: and given face validity this may be the best evidence of construct validity obtainable in circumstances where there is no Gold Standard.
Quine claims, however, that the project in fact affords us the best obtainable insight into the nature of the evidence for our theories, and into the relation between theory and evidence: "the evidential relation is virtually enacted, it would seem, in the learning" (1975c, 74 75).
Since evidence-based estimates were obtainable, calibration of these parameters was not necessary.
They cannot be obtained surgically or, if obtainable, only with extremely sophisticated craniofacial procedures.
There is ample evidence that adequate damping may be obtainable only by the additi·n of several of these palliatives to different parts of the machinery structure, and accordingly a possible method of summation is proposed, based upon an analogy with room acoustics.
Many MPs and peers defended the intelligence agencies, with Lord Carlile, the former overseer of UK counter-terrorism, saying there was absolutely no evidence that "GCHQ has deliberately circumvented UK law to obtain information that is not obtainable under UK law".
In this study, we show evidence that the t10c12 isomer of CLA, at physiologically obtainable doses, significantly reduced HER2 protein in SKBr3 cells.
