Which level of evidence is most often placed at the top of the hierarchy of evidence for practice decisions?/2022

. Which of the following countries does not

have a Cochrane Center?

A. Germany

B. Italy

C. Mexico

D. Netherlands

. Which level of evidence is most often placed

at the top of the hierarchy of evidence for

practice decisions?

A. meta-analysis of multiple randomized

clinical trials

B. results from a single well-controlled experimental study

C. a consensus of opinion from a group of

experts on the topic

D. case-control studies