[R-meta] Changing the reference group within a study
Steven@Br@dburn @ending from mmu@@c@uk
Wed Jul 25 16:24:14 CEST 2018
Basically, I was wondering how to change the effect size of an adjusted model from a study to reflect a different reference group within that study. For example, the study has 4 groups with the following relative risks and 95% CIs :
1. RR 0.81 (0.69 - 0.96)
2. RR 0.88 (0.76 - 1.03)
3. RR 0.80 (0.80 - 1.08)
The other studies included within my meta-analysis have defined group 1 as the reference, instead of group 4 used here. How can I go about changing the RRs so that group 1 is the reference group within this study? Or is that not even possible?
Any help on this issue will be greatly appreciated.
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