Look at the help file for the command that you will be using. The choice of weight that minimises the variability of the summary log or is wi 1vi, where is vi is the variance variances. In this paper we provide guidance on how to undertake metaanalysis using stata, one of the most commonly used software packages for meta. To conduct a fixed or a random effects metaanalysis.
Metaanalysis in medical research pubmed central pmc. For this workshop, we will be using the meta analysis commands that were introduced in stata 16. Another important consideration for metaanalysis is that of the underlying model. Human cytomegalovirus infection and vascular disease risk.
Glass first defined metaanalysis in the social science literature as the statistical analysis of a large collection of analysis results from individual studies for the purpose of integrating the findings 9. Metaanalysis is a quantitative, formal, epidemiological study design used to systematically assess the results of previous research to derive. Studies were eligible for inclusion if they fulfilled all of the following selection criteria. It reports individual effect sizes and the overall effect. Stata 16 contains a suite of commands for performing metaanalysis. If you are using the official metaanalysis commands in stata 16, the collection of stata journal articles is still valuable because the collection contains information on metaanalysis and not just information on the communitycontributed metaanalysis commands. We identified relevant studies through a search of pubmed and embase. Pdf a handson practical tutorial on performing metaanalysis with. Metaanalysis of observational studies in epidemiology. A comprehensive set of userwritten commands is freely available for metaanalysis. The model y presented in the stata program simultaneously.
Before you start collecting the actual data for the metaanalysis, decide which statistical software package will be used to analyze the data. A handson practical tutorial on performing metaanalysis with stata. A handson practical tutorial on performing metaanalysis with stata article pdf available in evidencebased mental health 174 october 2014 with 2,804 reads how we measure reads. A handson practical tutorial on performing metaanalysis. Accordingly, an analytic approach called network metaanalysis. Metaanalysis glass 1976 is a statistical technique for combining the results from several similar studies. Metaanalysis of studies with binary relative risk, odds ratio, risk. Fixed common effect metaanalysis summary pooled logorf.