similar to: simulating 'non-standard' survival data

Displaying 20 results from an estimated 1000 matches similar to: "simulating 'non-standard' survival data"

2012 May 11
2
survival analysis simulation question
Hi, I am trying to simulate a regression on survival data under a few conditions: 1. Under different error distributions 2. Have the error term be dependent on the covariates But I'm not sure how to specify either conditions. I am using the Design package to perform the survival analysis using the survreg, bj, coxph functions. Any help is greatly appreciated. This is what I have so far:
2007 Nov 07
1
Aggregate with non-scalar function
R-Helpers, I'm sorry to have to ask this -- I've not used R very much in the last 8 or 10 months, and I've gotten rusty. I have the following (ff2 is a subset of a much, much larger dataset): > ff2 hostName user sys idle obsTime 10142 fred 0.4 0.5 98.0 2007-11-01 02:02:18 16886 barney 0.5 0.2 94.6 2007-10-25 19:12:12 8795 fred 0.0 0.1 99.8
2006 Sep 03
2
Running cox models
Hi, I'm reading van Belle et al "Biostatistics" and trying to run a cox test using a dataset from: http://faculty.washington.edu/~heagerty/Books/Biostatistics/chapter16.html (Primary Biliary Cirrhosis data link at top of the page), I'm using the following code: --------------- start of code library(survival) liver <-
2007 Apr 26
3
adding a column to a matrix
i would like to add a variable to an existing matrix by manipulating 2 previous variables eg for the data m treat strata censti survTime [1,] 1 2 284.684074 690.4961005 [2,] 1 1 172.764515 32.3990335 [3,] 1 1 2393.195400 24.6145279 [4,] 2 1 30.364771 8.0272267 [5,] 1 1 523.182282 554.7659501 l
2008 Aug 22
0
Censored Poisson Data
Dear list, I am wondering whether R allows to perform a Poisson regression on counting data which include censored observations, that is, observations of the form "2 events or more" or "less than 2 events" or even "1 or 2 events". Can anyone give me a hint whether this is already possible and how to do it? Data of the form (obstime is the observation time,
2008 Apr 08
1
sample size for log-rank test with more than 2 groups
Hi everyone, I was wondering whether extension of the current spower function for Hmisc were existing? My current focus is to calculate sample size based on the log-rank test with more than 2 groups (with/without trend) Taking into account the loss of follow up and the accrual processes. A SPSS library (ART) is existing but can't find anything in R Any information is welcome ! Many
2007 May 07
4
creating a new column
hie l would like to create a 6th column "actual surv time" from the following data the condition being if censoringTime>survivaltime then actual survtime =survival time else actual survtime =censoring time the code l used to create the data is s=2 while(s!=0){ n=20 m<-matrix(nrow=n,ncol=4)
2008 Aug 16
5
DO NOT REPLY [Bug 5695] New: rsync local timeout
https://bugzilla.samba.org/show_bug.cgi?id=5695 Summary: rsync local timeout Product: rsync Version: 3.0.3 Platform: x86 OS/Version: Linux Status: NEW Severity: normal Priority: P3 Component: core AssignedTo: wayned@samba.org ReportedBy: gabriele.tozzi@gmail.com QAContact:
2007 Apr 25
0
Use of Lexis function to convert survival data to counting format
I'm trying to convert a dataset from the time-independent analysis form > head(addicts) id clinic status survtime prison meth clinic01 1 1 1 1 428 0 50 1 2 2 1 1 275 1 55 1 3 3 1 1 262 0 55 1 into the "counting data format" necessary to perform extended Cox regression. I got
2012 Jan 07
1
using deltat parameter in time series in HoltWinters prediction
Hi. I have to forecast a time series of a Internet network traffic bitrate. The data are in file http://www.forumaltavilla.it/joomla/datitesi/dati.datand the sampling time is every 0.05 seconds. Now, i want to use HoltWinters forecasting. This is my script. dt=1.58443823e-9 #0.05 seconds in years dati.ts=ts(scan("dati.dat"),start=0,deltat=dt) model=HoltWinters(dati.ts)
2017 Feb 14
1
Samba AD domain member with SSSD: ACL not work
Il giorno mar, 14/02/2017 alle 16.13 +0000, Rowland Penny via samba ha scritto: > Have you modified /etc/nsswitch.conf ? No: > passwd:     files sss > shadow:     files sss > group:      files sss for default nsswitch.conf is configure to use sssd > If you haven't, then you are not using winbind, you are using sssd. Yes. I use sssd, If this is not a problem for samba. >
2006 Nov 03
1
difference in using with() and the "data" argument in glm call
Dear all, I am dealing with the following (apparently simple problem): For some reasons I am interested in passing variables from a dataframe to a specific environment, and in fitting a standard glm: dati<-data.frame(y=rnorm(10),x1=runif(10),x2=runif(10)) KK<-new.env() for(i in 1:ncol(dati)) assign(names(dati[i]),dati[[i]],envir=KK) #Now the following two lines work correctly:
2017 Feb 15
0
Samba AD domain member with SSSD: ACL not work
Il giorno mer, 15/02/2017 alle 08.42 +0100, L.P.H. van Belle via samba ha scritto: > Have you seen :  > > ( centos/redhat ) > https://outsideit.net/realmd-sssd-ad-authentication/  > > ( debian/ubuntu )  > http://www.alandmoore.com/blog/2015/05/06/joining-debian-8-to-active- > directory/ Thank Luis, Thank Rowland. Yes, I have read this howto, and many others. None show
2005 Sep 23
2
Strange behaviour of as.Date function
Dear All, I'm happily extracting data of temperature from an oracle db under R via RODBC. After manipulating the extracted data I put them into a data.frame 'dati' which is as follows: > dati DATA tm. UDINE/RIVOLTO tm.TORINO/CASELLE 1 2005-07-01 22.35 23.80 2 2005-07-02 22.70 22.85 3 2005-07-03 23.80
2006 Nov 03
1
[R] difference in using with() and the "data" argument in glm (PR#9338)
I've redirected this reply from r-help to the bugs list. On 11/3/2006 8:25 AM, vito muggeo wrote: > Dear all, > I am dealing with the following (apparently simple problem): > For some reasons I am interested in passing variables from a dataframe > to a specific environment, and in fitting a standard glm: > > dati<-data.frame(y=rnorm(10),x1=runif(10),x2=runif(10)) >
2004 Nov 10
1
Loading some function at R startup
Dear R-users, I've built these functions usefell for me to import/export data from/to Excel: importa.da.excel<-function(){read.delim2("clipboard", dec=",") ## questa funzione consente di importare dati da Excel in R ## selezionare in Excel le celle che contengono i dati, ## compresi in nomi delle colonne ## Autore: Vito Ricci email:vito_ricci at yahoo.com ## Data di
2004 May 17
0
Fw: add objects to svm plot
Reposting to the group for input.... Thanks for any help you can provide. Sean ----- Original Message ----- From: <ale.ambrosi at unipd.it> To: <sdavis2 at mail.nih.gov> Sent: Monday, May 17, 2004 4:22 AM Subject: add objects to svm plot > > >at 06.38 14/05/2004 -0400, you wrote: > >It might be helpful if you could send your code to the list along with any >
2017 Feb 15
3
Samba AD domain member with SSSD: ACL not work
Have you seen : ( centos/redhat ) https://outsideit.net/realmd-sssd-ad-authentication/ ( debian/ubuntu ) http://www.alandmoore.com/blog/2015/05/06/joining-debian-8-to-active-directory/ but i must say, i havent tested/tried these, i dont use sssd. But i think these are usefull for you to read at least. If you use the debian variant, you may need to install also : One or more of these :
2004 May 13
2
tapply & hist
I'm learning how to use tapply. Now I'm having a go at the following code in which dati contains almost 600 lines, Pot - numeric - are the capacities of power plants and SGruppo - text - the corresponding six technologies ("CCC", "CIC","TGC", "CSC","CPC", "TE"). .....................................................
2017 Feb 15
2
Samba AD domain member with SSSD: ACL not work
Il giorno mer, 15/02/2017 alle 09.45 +0100, Dario Lesca via samba ha scritto: > Then Yesterday in 5 minutes I installed, configured and activated > winbind and now all work fine. Ok, ACLs now work, but I now it's appeared another problem. I can only access to my samba+winbind server from Windows Server AD DC and from itself (smbclient -Uadministrator -L server-dati). If I try to