Making a decision about whether to implement a school-based health promotion intervention should be based on evidence of effectiveness, cost and practicalities.
In a world where medicine is supposed to be based on evidence, the question of how evidence-based the published results should be appraised and translated into clinical practice is of crucial importance [1, 2].
Policymaking should be based on evidence.
Medicine should be based on evidence and not just on supposition.
"Whatever policy decisions the regulators and ministers make, they should be based on evidence," O'Brien said.
I expect the cycle superhighways to do a great job, but policy needs to be based on evidence.
They should offer advice, emotional support and training to help promote positive parenting and should also be based on evidence and evaluated on a regular basis.
Tom Kark, in his judgment on the insufficiency of evidence says that "the case would have to be based on evidence of very poor management".
The education secretary assured the committee that her plans, in a consultation document published on Monday, were intended to boost social mobility and would be based on evidence.
It is for this reason why JRF is involved in this partnership: we want policy responses to be based on evidence, not on conjecture".
Not all of these decisions will be based on evidence of harm or illegality, but on a subjective interpretation of a fluid set of rules.
