[From clinical trial to prescription].

Clinical trials produce factual data that should be put in practice. This requires that information drawn form their results be transferred to doctors without bias, under a format suited to their training and meeting the constraints of their daily practice. Today this critical step is poorly efficient, despite the availability of techniques and methods appropriate for accessing such information and to tailor it to each patient. Furthermore, regarding many conditions encountered in medical practice, evidence is lacking or is of low strength. Doctors should revise their practice according to the information yielded by clinical trials.