TY - JOUR T1 - De Testimonio: on the evidence for decisions about the use of therapeutic interventions JF - Clinical Medicine JO - Clin Med SP - 579 LP - 588 DO - 10.7861/clinmedicine.8-6-579 VL - 8 IS - 6 AU - Michael Rawlins Y1 - 2008/12/01 UR - http://www.rcpjournals.org/content/8/6/579.abstract N2 - Decisions about the use of therapeutic interventions, whether for individuals or entire healthcare systems, should be based on the totality of the available evidence. The notion that evidence can be reliably or usefully placed in ‘hierarchies’ is illusory. Rather, decision makers need to exercise judgement about whether (and when) evidence gathered from experimental or observational sources is fit for purpose. ER -