Final answer:
Meta-analysis is a statistical technique used to combine and analyze the results of multiple previous studies on a specific subject. It does not replace phase 3, double-blind, multicenter, randomized studies, but it can be used to summarize their findings.
Step-by-step explanation:
Meta-analysis is a statistical technique used to combine and analyze the results of multiple previous studies on a specific subject. It involves evaluating the data from these studies to draw conclusions and make inferences about the overall effect.
Meta-analysis does not replace phase 3, double-blind, multicenter, randomized studies. These types of studies are considered the gold standard for evaluating the efficacy and safety of interventions as they provide the highest level of evidence.
Meta-analysis can be used to summarize the findings from phase 3 studies and provide a more comprehensive understanding of the overall treatment effect, but it does not replace the need for these individual studies.