Class I: Conditions for which there is evidence and/or general agreement that a given
procedure or treatment is useful and effective. Class II: Conditions for which there is …

Background: Studies of diagnostic accuracy are subject to different sources of bias and
variation than studies that evaluate the effectiveness of an intervention. Little is known about …

Surveys and registries are needed to verify that real-life daily practice is in keeping with what
is recommended in the guidelines, thus completing the loop between clinical research …

With regard to a literature search for this revision, no specific strategy or formal data quality
assessment was used. Each of the 15 members of the writing group has specific expertise …

Zachęca się pracowników opieki zdrowotnej, aby w pełni uwzględniali te wytyczne
ESC/EACTS, gdy dokonują oceny klinicznej, a także kiedy określają i realizują medyczne …

Objective To classify the sources of bias and variation and to provide an updated summary
of the evidence of the effects of each source of bias and variation. Study Design and Setting …

Redusert venstre ventrikkelfunksjon er en selvstendig og sterkt ugunstig prognostisk faktor.
Vurdering av venstre ventrikkelfunksjon med for eksempel ekkokardiografi anbefales utført …

It is important that the medical profession play a significant role in critically evaluating the
use of diagnostic procedures and therapies in the management or prevention of disease …

Coronary artery calcification is part of the development of atherosclerosis; it occurs
exclusively in atherosclerotic arteries and is absent in the normal vessel wall. Electron-beam …

The widespread use of hierarchies of evidence that grade research studies according to
their quality has helped to raise awareness that some forms of evidence are more …