G'day all,
On Tue, 10 Mar 2020 11:07:13 +
"Viechtbauer, Wolfgang (SP)"
wrote:
> The linearHypothesis() function from the 'car' package does this.
The function glht() in the 'multcomp' package should also be able to do
this.
The 'emmeans' package might also be useful.
Will be off-line fo
rlach
Cc: r-help@r-project.org (r-help@r-project.org)
Subject: Re: [R] I am struggling with contrasts
I have not clearly stated my question. I would like to obtain the point
estimate and SE (or point estimate and 95% CI) of a linear combination of the
the independent variables included in my
rwin A Turlach
Cc: Sorkin, John ; r-help@r-project.org
(r-help@r-project.org)
Subject: Re: [R] I am struggling with contrasts
Yes. Contrasts, by definition, represents between-group differences, so cannot
yield individual group levels. The closest you get is that the _intercept_ is
the level of
Yes. Contrasts, by definition, represents between-group differences, so cannot
yield individual group levels. The closest you get is that the _intercept_ is
the level of the base group in treatment contrasts, and relevel() will allow
you to change the base level.
-pd
> On 10 Mar 2020, at 04:06
G'day John,
On Tue, 10 Mar 2020 01:42:46 +
"Sorkin, John" wrote:
> I am running a Poisson regression with a single outcome variable,
> HGE, and a single independent variable, a factor, Group which can be
> one of two values, Group1, or Group2. I am trying to define contrasts
> that will give
I am running a Poisson regression with a single outcome variable, HGE, and a
single independent variable, a factor, Group which can be one of two values,
Group1, or Group2.
I am trying to define contrasts that will give me the values of my outcome
variable (HGE) when group=Group1 and when group=
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