Which epidemkiological study gives the most accurate result -
A meta-analysis is a statistical analysis that combines the results of multiple scientific studies. Conceptually, a meta-analysis uses a statistical approach to combine the results from multiple studies in an effo to increase accuracy (over individual studies), improve estimates of the size of the effect and/or to resolve unceainty when repos disagree.
Meta analysis
Cross sectional study
Randomized control trail with double blinding
Coho study
Epidemiology