Meta-Analysis In Medical Research Discussion

4-. I just want to add the levels of evidence from strongest to weakest

· Systemic review of experimental studies (well-designed randomized controlled trials [RCTs])

· Meta-analyses of experimental (RCT) & quasi-experimental studies

· Integrative reviews of experimental (RTC) & quasi-experimental studies

· Single experimental study (RCT)

· Single quasi-experimental study

· Meta-analysis of correlational studies Meta-Analysis In Medical Research Discussion Papers.

· Integrative reviews of correlational & descriptive studies

· Qualitative research meta-synthesis & meta-summaries

· Single correlational study

· Single qualitative or descriptive study