meta-analysis

  1. G

    How to use a meta-analysis to assess the equivalence of two different procedures?

    I'm making a comparison of two surgical procedures, and I want to know how I can analyze the data I have for a meta-analysis. The overall surgical procedure is the same, but some authors choose to modify the procedure a bit. So basically I have a large number of studies with the standard...
  2. S

    Interpretation of correlation coefficient

    Hello, I am working on a meta-analysis with the program R. Here I am investigating the relationship between the dependent variable "participation in Lobbying" (results = yes or no) and the independent variable "company size" (result = value of assets). The result I got is an Fisher's...
  3. M

    Convert odds ratios and beta coefficients to a comparable effect size

    Dear all, First a short introduction to my study/review/meta-analysis. The purpose of my study is to systematically review longitudinal evidence on the association between psychosocial work characteristics (i.e. job demands, job control, social support) and sleep, since cross-sectional...
  4. C

    Meta-analysis : Bayesian credible intervals

    Hi guys, thank you very much for responding to my request I have conducted a meta-analysis of a common medical treatment. There have been several difficulties along the way. There were six studies. One study had a shared comparison group. This necessitated doing a weighted least squares...
  5. J

    Meta-analysis - Obtaining r from t, F, or χ2

    Help! It is common in meta-analyses to find the following statement, or something very like it: "The present meta-analysis includes studies that report a simple correlation between the constructs of interest (r—Pearson’s correlation coefficient) (or equivalent r—transformed from t, F, or χ2)...