similar to: counting process form of a cox model (cluster(id))

Hi, I am currently analysising a counting process form of a cox model allowing for the inclusion of time dependent covariates. An example model I have fitted is modlqol<-coxph(Surv(Tstart,Tstop,cens.time)~tmt.first+risk +lqol+cluster(id),data=cat) summary(modlqol) My question is quick. I am looking at 1 event (death), and repeated measurements (the time dependent covariate 'lqol')

I have asked a similar question before but this time the problem is somewhat more involved. I have the following data: case;name;x 1;Joe;1 1;Mike;1 1;Zoe;1 2;Joe;1 2;Mike;0 2;Zoe;1 2;John;1 3;Mike;1 3;Zoe;0 3;Karl;0 I would like to count the number of "case" in which any two "name" a. both have "x=1", b. the first has "x=0" - the second has

Hi, I'm trying to reproduce with R the results of this study: https://learn.gold.ac.uk/mod/resource/view.php?id=262406 More precisely I want to reproduce the results of the table 6 (pag.280), which can also be seen here: http://picpaste.de/pics/table-robin-llKCOeWV.1501745645.png Let's take the first column: we have a coeff. of 0.097 and a SE of 0.026, which represents clustered robust

not sure if i misunderstood the documentation but my understanding is the -a option preserves ownership and permissions on transfer. i did a remote test and i see ownership changed is that becuase user does not exist in the remote box 4.0K drwxr-xr-x 14 zoe zoe 4.0K 2007-07-15 08:08 zoe but in the remote system they changed to 4.0K drwxr-x--- 8 boricua users 4.0K 2007-05-02 11:07

Dear List, I'm just teaching myself semi-parametric techniques. Apologies in advance for the long post. I've got observational data and a longitudinal, semi-parametric model that I want to fit in GAM (or potentially something equivalent), and I'm not sure how to do it. I'm posting this to ask whether it is possible to do what I want to do using "canned" commands

Hi Zoe, maybe you've already solved your problem with VMKit configuration, but here you can find a mini-tutorial that I've done to guide people on VMKit installation. http://www2.dcc.ufmg.br/laboratorios/llp/wiki/doku.php?id=afpf Best regards, Alysson On Wed, Jun 30, 2010 at 1:34 PM, nicolas geoffray < nicolas.geoffray at gmail.com> wrote: > Hi Zoe, > > Unfortunately, I

Thanks Alysson. Unfortunately, those instructions don't work for me (I followed them exactly using a clean system) -- probably because of the recent changes to the svn heads. After fixing EscapeAnalysis in vmkit to use the updated CallInst.getArgOperand interface I hit the error below. I was interested in using mmtk with the system (as recommended), but that requires a llvm-gcc build (and

Hey guys, I'm trying to write a simple bash script that will cp a configuration file to a backup (with the date) remotely to a bunch of machines, using sudo with ssh. I notice that if I run the commands individually, they both work (albeit with some strange output I'd like to suppress): [tdunphy at MIAGRBISSH01V ~]$ ssh -q -t -t -t MIAGRBIORCA00V sudo -S 'cp -v

Hi Nicolas I tried building it all from source on a x86_32 system (Ubuntu Hardy, linux 2.6.24-24, gcc 4.2.4, llvm/llvm-gcc source from svn (July 2, 2010)). Unfortunately I am unable to build llvm-gcc b/c of this bug: http://www.mail-archive.com/llvmbugs at cs.uiuc.edu/msg08159.html thanks for your work on these systems, hopefully I'll be able to try vmkit at some point in the future. thanks

I am trying to build a package (GWASTools, submitted to Bioconductor) that uses the "sandwich" package. I have references to "sandwich" in DESCRIPTION: Imports: methods, DBI, RSQLite, sandwich, survival, DNAcopy and NAMESPACE: import(sandwich) In the code itself is a call to vcovHC: Vhat <- vcovHC(mod, type="HC0") I have sandwich version 2.2-7 installed.

Hi Zoe, Unfortunately, I don't have access to a x64 machine anymore, so I can't test that architecture on vmkit. Could you install a virtual machine on your machine that is x86_32? I know it has been successfully built and ran on x86_32 on different systems. Cheers, Nicolas On Wed, Jun 30, 2010 at 7:49 AM, Zoe Wolk <zoewolk at gmail.com> wrote: > Hi again Nicolas, > >

Dear useRs, a new version 2.0-0 of the sandwich package for estimating sandwich covariance matrices is available from the CRAN mirrors. The tools for computing heteroskedasticity (and autocorrelation) consistent covariance matrix estimators (also called HC and HAC estimators, including the Eicker-Huber-White estimator) have been generalized over the last releases from linear regression to

I am working on a competing risks problem, specifically an analysis of cause-specific mortality. I am familiar with the cmprsk package and have used it before to create cumulative incidence plots. I also came across an old (1998) s-news post from Dr. Terry Therneau describing a way to use coxph to model competing risks. I am re-producing the post at the bottom of this message. I would like to

Hello again Max. A correction to my response from yesterday. Things were better than they seemed. I thought it over, checked Arellano's panel book and Driscoll and Kraay (Rev. Econ. Stud. 1998) and finally realized that vcovSCC does what you want: in fact, despite being born primarily for dealing with cross-sectional correlation, 'SCC' standard errors are robust to "both

Hi all, I use samba-3.0.20b on a solaris 10 box with a ldap backend. All works fine except one thing: I have an account "bob". Its home directory is "/tmp/teachers/bob" Its group is "teachers". However when I define the teachers repository permissions like this: [zoe.root:367] ls -al /tmp drwxrwx--- 2 root teachers 177 Nov 15 13:22 teachers (access in

Dear useRs, here is the announcement for the next "new" package: sandwich 0.1-3. sandwich provides heteroskedasticity (and autocorrelation) consistent covariance matrix estimators (also called HC and HAC estimators). The former are implemented in the function vcovHC() (which was available in strucchange before - and independently in hccm() in John Fox's car package). And the

Dear useRs, here is the announcement for the next "new" package: sandwich 0.1-3. sandwich provides heteroskedasticity (and autocorrelation) consistent covariance matrix estimators (also called HC and HAC estimators). The former are implemented in the function vcovHC() (which was available in strucchange before - and independently in hccm() in John Fox's car package). And the

> I'm using rpart function for creating regression trees. > now how to measure the fitness of regression tree??? > > thanks n Regards, > Vibha I read R-help as a digest so often come late to a discussion. Let me start by being the first to directly answer the question: > fit <- rpart(time ~ age +ph.ecog,lung) > summary(fit) Call: rpart(formula = time ~ age +

Hi again Nicolas, Can you please tell me the output of your llvm-gcc -v and llvm-config -version? Mine is below, perhaps its because I built llvm with enable-jit? Do you have users of vmkit? ie has anyone other than the llvm team been successful at building and running vmkit? I tried on a core2 machine (albeit also karmic) and have the same problem. Can you build a fresh machine (virtual

In case more of you come across my request from this morning, I've already gotten several great tips, which I summarize here since one or two of these did not come across R-help as well. A team of fellow political scientists is on this problem like "white-on-rice"! Brandt, Patrick, John T. Williams Benjamin O. Fordham, and Brian Pollins. 2000. "Dynamic Modeling for Persistent