I have been using metafor package to conduct my meta-analysis. I'm quite naive with R software and hence having some difficulty in interpreting the output file generated for meta-regression.
I have used the proportion of females as a moderator variable (continuous data) to assess the effect of gender as a moderator variable. The results of meta-regression shows significant moderating effect of my moderator variable.
My questions are:
- While reporting the results, do we need to report the value for Q or z?
- The z-value has a negative sign in mod2 line of Model. What does this sign suggests? I get the exact same results when I use the proportion of males except the z-value is positive. Does this positive or negative z-value suggests the direction of our results in meta-regression?