[R] Add column to the output of summary(glht).

[Ista Zahn]

This won't make you an R aficionado, but depending on your needs

library(broom)
tidy(SumTukey)

might be useful. This converts the output to a familiar data.frame, making
it much easier to work with.

Best,
Ista
On Jun 24, 2016 9:48 AM, "John Sorkin" <JSorkin at grecc.umaryland.edu> wrote:

>
> I am trying to make the leap from an R users to an R aficionado . . .
>
> I am trying to understand how add a column to the output of summary (and
> to understand how summary() works).
>
> I have run a glmer
> fit0 <- glmer(Fall ~
> Group+(1|PID),family=poisson(link="log"),data=data[data[,"Group"]!=0,])
>
> and I want to perform adjusted multiple comparisons:
>
> SumTukey <- summary(glht(fit0, linfct= mcp(Group="Tukey")))
>
> which gives beautiful output:
>
> > SumTukey
>
>          Simultaneous Tests for General Linear Hypotheses
>
> Multiple Comparisons of Means: Tukey Contrasts
>
>
> Fit: glmer(formula = Fall ~ Group + (1 | PID), data = data[data[,
>     "Group"] != 0, ], family = poisson(link = "log"))
>
> Linear Hypotheses:
>            Estimate Std. Error z value Pr(>|z|)
> 2 - 1 == 0   0.5320     0.5075   1.048    0.717
> 3 - 1 == 0   0.6554     0.5000   1.311    0.551
> 4 - 1 == 0   0.9357     0.4655   2.010    0.181
> 3 - 2 == 0   0.1234     0.4174   0.296    0.991
> 4 - 2 == 0   0.4037     0.3754   1.075    0.700
> 4 - 3 == 0   0.2803     0.3651   0.768    0.867
> (Adjusted p values reported -- single-step method)
>
> I want to add a column to the output (unadjusted p-values), but I don't
> see how this might be done. The output
> is not a dataframe, nor is it a matix.
> > class(SumTukey)
> [1] "summary.glht" "glht"
>
> It is some class of objects that I don't understand and know nothing
> about. How can I add a column to the output of SumTukey [a.k.a.
> summary(glht(fit0, linfct= mcp(Group="Tukey")))] ?
>
> Thank you
> John
>
>
> John David Sorkin M.D., Ph.D.
> Professor of Medicine
> Chief, Biostatistics and Informatics
> University of Maryland School of Medicine Division of Gerontology and
> Geriatric Medicine
> Baltimore VA Medical Center
> 10 North Greene Street
> GRECC (BT/18/GR)
> Baltimore, MD 21201-1524
> (Phone) 410-605-7119
> (Fax) 410-605-7913 (Please call phone number above prior to faxing)
>
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