[R-meta] Subgroup analyses
d@v|d@c|cchett| @end|ng |rom @tudent@un|-tueb|ngen@de
Wed Aug 25 12:55:11 CEST 2021
Dear list members,
I am trying to run subgroup analyses in my meta analysis. I have the
issue that I do not know whether I should include an intercept or not,
meaning whether I should do mods = ~ Coil.Type (with intercept) or
mods = ~ Coil.Type - 1 (without intercept).
From what I know so far we can leave out the intercept if for x = 0
-> y = 0. Unfortunately I don't think that logic applies here. My
variables (as for example Coil Type) do not have a 'zero' condition,
it compares for example Coil A with Coil B.
If I want to write down the values as a table, I cannot do that well
when including the intercept because then the estimate, standard error
and CI are from the difference to the intercept and not from the level
Since the Moderator tests become more easily significant when
excluding the intercept, I was hesitant to do so. Therefore I would be
thankful if anyone could clear me up on when/if I am allowed to get
rid of the Intercept in my case.
Thanks in advance.
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