Question

What is Meta-Analyses?

a. Meta-analyses of randomized controlled trials (RCTs) are at the pinnacle of traditional evidence hierarchies
Info. from diff. studies is used to compute a common metric, an effect size (yields info. about the existence of a relationship b/w variables as well as an estimate of its magnitude across studies
b. A review that methodically integrates research
c. data collection procedures that are spelled out in advance in a protocol

Answer 1

Meta-analysis is a technique that combines the results of previous studies on a subject to evaluate their relationship and magnitude. It is used to compute effect sizes in meta-analyses of randomized controlled trials (RCTs), which are considered the pinnacle of traditional evidence hierarchies.

Step-by-step explanation:

Meta-analysis is a technique that evaluates the results of previous studies on a specific subject by combining them together. It involves computing a common metric, known as an effect size, which provides information about the relationship between variables and its magnitude across studies. Meta-analyses of randomized controlled trials (RCTs) are considered to be the highest level of evidence in traditional evidence hierarchies.

Meta-analyses hold a high position in the hierarchy of evidence because they utilize data from past studies, often including RCTs, which attempt to control for confounding variables and minimize bias. This method serves as a powerful tool in medical research, psychology, and conservation biology, to make informed decisions based on a broader range of evidence.