Displaying 20 results from an estimated 400 matches similar to: "Extracting results from a function output"
2011 Oct 20
3
Survival analysis
Hello,
I need some results from the survival analysis of my data
that I do not know whether exist in Survival Package or how to obtain if
they do:
1. The Mean survival time
2. The standard error of the mean
3. Point and 95% Lower & Upper Confidence Intervals estimates
Any help will be greatly appreciated.
Cem
[[alternative HTML version
2011 Nov 05
3
List of user installed packages
Hello,
I am going to install the new version of R 2.14.1. After the
installation, I want to copy my installed packages to the new library. But
since over time I forgot which ones I installed I want to get a list of all
the packages I installed among the packages installed initially by the
R-installer. Is this possible?
Cem
Cem Girit, PhD
Biopticon Corporation
182
2018 Mar 05
2
data analysis for partial two-by-two factorial design
But of course the whole point of additivity is to decompose the combined
effect as the sum of individual effects.
"Mislead" is a subjective judgment, so no comment. The explanation I
provided is standard. I used it for decades when I taught in industry.
Cheers,
Bert
Bert Gunter
"The trouble with having an open mind is that people keep coming along and
sticking things into
2018 Mar 05
0
data analysis for partial two-by-two factorial design
> On Mar 5, 2018, at 2:27 PM, Bert Gunter <bgunter.4567 at gmail.com> wrote:
>
> David:
>
> I believe your response on SO is incorrect. This is a standard OFAT (one factor at a time) design, so that assuming additivity (no interactions), the effects of drugA and drugB can be determined via the model you rejected:
>> three groups, no drugA/no drugB, yes drugA/no drugB,
2018 Mar 05
0
data analysis for partial two-by-two factorial design
> On Mar 5, 2018, at 3:04 PM, Bert Gunter <bgunter.4567 at gmail.com> wrote:
>
> But of course the whole point of additivity is to decompose the combined effect as the sum of individual effects.
Agreed. Furthermore your encoding of the treatment assignments has the advantage that the default treatment contrast for A+B will have a statistical estimate associated with it. That was a
2018 Mar 05
2
data analysis for partial two-by-two factorial design
Hi Bert,
I am very sorry to bother you again.
For the following question, as you suggested, I posted it in both Biostars website and stackexchange website, so far no reply.
I really hope that you can do me a great favor to share your points about how to explain the coefficients for drug A and drug B if run anova model (response variable = drug A + drug B). is it different from running three
2018 Mar 05
5
data analysis for partial two-by-two factorial design
David:
I believe your response on SO is incorrect. This is a standard OFAT (one
factor at a time) design, so that assuming additivity (no interactions),
the effects of drugA and drugB can be determined via the model you rejected:
For example, if baseline control (no drugs) has a response of 0, drugA has
an effect of 1, drugB has an effect of 2, and the effects are additive,
with no noise we
2018 Mar 05
0
data analysis for partial two-by-two factorial design
> On Mar 5, 2018, at 8:52 AM, Ding, Yuan Chun <ycding at coh.org> wrote:
>
> Hi Bert,
>
> I am very sorry to bother you again.
>
> For the following question, as you suggested, I posted it in both Biostars website and stackexchange website, so far no reply.
>
> I really hope that you can do me a great favor to share your points about how to explain the
2018 Mar 05
0
data analysis for partial two-by-two factorial design
Hi Bert and David,
Thank you so much for willingness to spend some time on my problem!!! I have some statistical knowledge (going to get a master in applied statisitics), but do not have a chance to purse a phD for statistics, so I am always be careful before starting to do analysis and hope to gather supportive information from real statisticians.
Sorry that I did not tell more info about
2018 Mar 02
3
data analysis for partial two-by-two factorial design
Dear R users,
I need to analyze data generated from a partial two-by-two factorial design: two levels for drug A (yes, no), two levels for drug B (yes, no); however, data points are available only for three groups, no drugA/no drugB, yes drugA/no drugB, yes drugA/yes drug B, omitting the fourth group of no drugA/yes drugB. I think we can not investigate interaction between drug A and drug B,
2018 Mar 02
0
data analysis for partial two-by-two factorial design
This list provides help on R programming (see the posting guide linked
below for details on what is/is not considered on topic), and generally
avoids discussion of purely statistical issues, which is what your query
appears to be. The simple answer is yes, you can fit the model as
described, but you clearly need the off topic discussion as to what it
does or does not mean. For that, you might try
2011 Nov 09
6
Web based R-help not a list
Hello,
Is there a web version of this R-Help user group (such as
the ones under Google Groups) such that
1. I can do a search on any topic over thousands of posts on R easily
and effectively
2. My mailbox do not overflow with emails so that I do not need to
edit it every day
3. I can arrange to receive only the responses to my posts
automatically
4.
2011 Oct 30
1
Parametric tests
Hello,
I am interested in parametric multi comparison tests such as
Dunnett, Duncan, Tukey, Newman-Keuls, Bonferonni, Scheffe, and
non-parametric tests such as Kruskal-Wallis, and Mann-Whitney U. Are there
packages that include most of these tests in each category? Many packages
exist for an individual test but their outputs vary in great detail (test
statistics, p-values, etc.)
2011 Nov 07
3
Upgrade R?
I am trying to upgrade to R 2.14 from R 2.13.1 I have compied all the
libraries from the 'library' directory in my existing installation (2.13.1)
to the installed R 2.14. Now I want to uninstall the old installation (R
2.13.1) and I get the error:
Internal Error: Cannot find utCompiledCode record for this version of the
uninstaller.
Any ideas?
Kevin
[[alternative HTML
2011 Oct 24
2
Plot Legend
Good Afternoon,
I am inexperienced in data visualization R. so I wonder if someone can help
me.
I am using the generic database mtcars.
I would like to change the chart plot, instead of appearing the name of the
medicine, I wanted a symbol in the chart drugX arise for example in a yellow
circle, and so for the rest of the drugs.
I am using the following code.
dataset
Age Sex BP
2009 Oct 27
0
syntax for estimable(gmodels package) and glht(multcomp package)
Hello,
I have a question as to how the syntax for glht(package multcomp) and
estimable (gmodels) works, since I'm not getting everything from the
documents I've googled so far, especially with models with 2nd order
terms.
A modestly complex model:
2-way anova with one continuous covariate, no random effects(and no
repeated measures) to keep it modestly complex:
Y = treatmentgroup + sex
2011 Oct 18
1
r-Help web site access problem
Hello,
I cannot access the r-help website although after
registration I am getting all the posts sent to the side. Each time I click
on the "Visit Subscriber List" on the
https://stat.ethz.ch/mailman/listinfo/r-help site, I get "R-help roster
authentication failed." error. Any ideas?
Cem
[[alternative HTML version deleted]]
2006 May 15
1
anova statistics in lmer
Dear list members,
I am new to R and to the R-help list. I am trying to perform a
mixed-model analysis using the lmer() function. I have a problem with
the output anova table when using the anova() function on the lmer
output object: I only get the numerator d.f., the sum of squares and the
mean squares, but not the denominator d.f., F statistics and P values.
Below is a sample output, following
2009 Apr 01
4
permission denied errors with rake db:migrate
I am at a loss here and hoping for some advise on where to begin looking
with a series of errors I am suddenly getting when trying to rake:
"anything goes here" ..
lil-loco:/rails/cem craigmartin$ rake db:migrate
(in /rails/cem)
rake aborted!
Permission denied - /rails/cem/db/schema.rb
This is the current error.
lil-loco:/rails/cem craigmartin$ rake db:schema:load
(in /rails/cem)
--
2013 May 20
1
help with 'cem' for r 2.14.2
Hello,
I am trying to use R for propensity score matching in SPSS.? I have version 21 of SPSS and I downloaded R 2.14.2 as directed as well as the R Essentials plug-in.? I have run a test for R and it appears to be running correctly.? I then downloaded psmatching3 and have tried to use the PS matching dialog in SPSS.? However, I continue to run into problems as SPSS reports that there is no