Table 1 of this article show the associations between the outcome and variables, the authors presented the
OR_ctr in control arm and
OR_trt in the treatment arm and the ratio of these two measures.
I'm a little confused about the interpretation and the usefulness of the ratio of odds ratio between the experimental and the control arm:
OR_trt / OR_ctr.
- Does this ratio have the same interpretation of OR? Why do one calculate it?
- How did they generate their data? Did they calculate
OR_trt / OR_ctrto see the interaction between the variables and the treatment?
- What is the relationship between treatment effect or risk difference, treatment benefit, and
OR_trt / OR_ctr?
I would be grateful if someone could clarify these points for me.
Thank you for your help :) !