search for: prentice

Dear all, I have a couple of questions regarding the survival:::cch function. 1) I notice that Prentice and Self-Prentice functions are giving identical standard errors (not by chance but by programming design) while their estimates are different. My guess is they are both using the standard error form from Self and Prentice (1986). I see that standard errors for both methods are asymptotically ident...

Case cohort function cch() is in survival package. In cch(), the prentice method is implemented like this: Prentice <- function(tenter, texit, cc, id, X, ntot,robust){ eps <- 0.00000001 cens <- as.numeric(cc>0) # Censorship indicators subcoh <- as.numeric(cc<2) # Subcohort indicators ## Calculate Prentice estimate ent2 <- tenter...

...umulative incidence for an event adjusting for competing risks and adjusting for covariates. One way to do this in R is to use the cmprsk package, function crr. This uses the Fine & Gray regression model. However, a simpler and more classical approach would be to implement the Kalbfleisch & Prentice method (1980, p 169), where one fits cause specific cox models for the event of interest and each type of competing risk, and then calculates incidence based on the overall survival. I believe that this is what the cuminc function in the aforementioned package does, but it does not allow to adjust...

...design. I had three questions about the analysis: a) Does any one know of some public code for developing the patient risk sets (indexed by failure time) or is there a better way to organize the data? b) I was planning to use the Barlow weighting method. Has this or any other weighting method (Prentice, Self-Prentice) been implemented in R? c) Is matching a good thing to do or can the variables that would be used for matching just be adjusted for in the cox regression (is there a reference for this because I can??t find one)? If matching is a good thing to do are there any R packages that conta...

I am having some issues (e.g. System lock ups) with my ATI 9250 Video card. I am thinging about replacing it with either a Nvidia FX5200, FX5500, or a FX5600 card. Is anyone using one of these cards on Centos 4.1 with the stock (XORG) nv driver? -------------- next part -------------- An HTML attachment was scrubbed... URL:

Dear all, I am reading the cch function source code. But I can not understand the following codes. Please help me. What's the fitter here? fitter <- get(method) out <- fitter(tenter = tenter, texit = texit, cc = cc, id = id, X = X, ntot = nn, robust = robust) [[alternative HTML version deleted]]

...shipping to stores, including Amazon, on Friday, Oct 25. It takes a few days in transit. As soon as the book arrives in Amazon's warehouse, they will change the status on their site. I expect this will happen tomorrow or the next day. Thanks for your patience. Jill Jill Harry Executive Editor Prentice Hall PTR 5585 Bear Creek Drive Cathey's Valley, CA 95306 209-374-3402 209-374-3406 fax www.phptr.com -----Original Message----- From: John H Terpstra To: jonlists Cc: samba@lists.samba.org Sent: 10/28/2003 6:42 PM Subject: Re: HowTo 3 book? On Tue, 28 Oct 2003, jonlists wrote: > John.......

...ich processor each process is running on. However, /proc/cpuinfo shows the two processors. Does this mean that my OS isn't seeing the second processor, or has the behavior of top changed between the two OS versions? Is there any way that I Can verify that both processors are being used? -- Prentice The contents of this communication, including any attachments, may be confidential, privileged or otherwise protected from disclosure. They are intended solely for the use of the individual or entity to whom they are addressed. If you are not the intended recipient, please do not read, copy,...

...r'' at /usr/lib/ruby/site_ruby/1.8/puppet/ network/handler/fileserver.rb:272 - undefined method `name'' for nil:NilClass undefined method `name'' for nil:NilClass Any help will be appreciated. I''ve been trying to track this problem down for a couple of days now -- Prentice --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Puppet Users" group. To post to this group, send email to puppet-users@googlegroups.com To unsubscribe from this group, send email to puppet-users-unsubscrib...

...ed to a san using Qlogic or Emulex cards. I tried a couple years ago with Fedora Core 1 or 2, and couldn't get the kernel modules from PowerPath to work since the kernel wasn't the official RHEL one. I'm most interested in Centos4.4/x86_64, but Centos 4.4/x86 is if interest, too. -- Prentice The contents of this communication, including any attachments, may be confidential, privileged or otherwise protected from disclosure. They are intended solely for the use of the individual or entity to whom they are addressed. If you are not the intended recipient, please do not read, copy, u...

Just curious but is there a limitation on the number of files in a directory? I am using ext3. I'm not concerned about file size just the number of files. Thanks, Jerry

...s are behind a firewall with NAT, I think the risk of falling victim to this exploit is pretty low (yes, I know firewalls are hardly a panacea). In my case, the benefits clearly outweigh the risks. As to why NVidia hasn't fixed this problem, that's a discussion for another mailing list. Prentice The contents of this communication, including any attachments, may be confidential, privileged or otherwise protected from disclosure. They are intended solely for the use of the individual or entity to whom they are addressed. If you are not the intended recipient, please do not read, copy,...

...hat are truly discrete Cox proposed the "exact partial likelihood". I call that the "exact" method and SAS calls it the "discrete" method. What we compute is precisely the same, however they use a clever algorithm which is faster. To make things even more confusing, Prentice introduced an "exact marginal likelihood" which is not implemented in R, but which SAS calls the "exact" method. Data is usually not truly discrete, however. More often ties are the result of imprecise measurement or grouping. The Efron approximation assumes that the data a...

...= 134 on 5 df, p=0 Score (logrank) test = 490 on 5 df, p=0, Robust = 165 p=0 (Note: the likelihood ratio and score tests assume independence of observations within a cluster, the Wald and robust score tests do not). > summary(fit.ccSP) Case-cohort analysis,x$method, SelfPrentice with subcohort of 668 from cohort of 4028 Call: cch(formula = Surv(edrel, rel) ~ stage + histol + age, data = ccoh.data, subcoh = ~subcohort, id = ~seqno, cohort.size = 4028, method = "SelfPren") Coefficients: Coef HR (95% CI) p stageII 0.736 2.088 1.491 2.925...

...if someone of you has ever written a function to compute the GHK smooth recursive simulator to estimate multivariate normal probabilities. See for instance page 194 of @BOOK{Greene97, author = {William H. Greene}, year = 1997, title = {Econometric Analysis}, edition = {3rd}, publisher = {Prentice-Hall}, address = {New Jersey 07458} } Thank you. Dietrich Trenkler -- Dietrich Trenkler Universit??t Osnabr??ck FB Wirtschaftswissenschaften Rolandstr.8 D-49069 Osnabr??ck dtrenkler at nts6.oec.uni-osnabrueck.de

...lleagues use SPSS, but I think data can be exchanged between SPSS, and R, is this true? 3. I have not worked with R so much yet. Would you mind do me a favour about this issue, please? Kind regards Mehrshad 1. Norusis MJ. SPSS 16.0 guide to data analysis. Upper Saddle River: Prentice Hall Inc.; 2008. 2. Norusis MJ. SPSS 16.0 statistical procedures companion. Upper Saddle River: Prentice Hall Inc.; 2008. 3. Kutner M, Nachtsheim C, Neter J, Li W. Applied linear statistical models. 5th ed. New York: McGraw-Hill; 2005. [[alternative HTML version deleted]]

...Jen. Not a direct answer, but you might look at Ronald Pruitt's "BIVSURV S LIBRARY", which runs under R, snd the references in the README. Another way to model such data is using survreg with a frailty term -- see the survival and kinship packages. The most recent Kalbfleisch & Prentice (Kalbfleisch J. D. & Prentice, R. L. (2002) The Statistical Analysis of Failure Time Data Wiley, 2nd Edition) has a chapter on bivariate survival analysis (with our example in it;)). David Duffy.

Hi all, Has any body the exprience to iclude a nonparametric component into the survival analysis using R package? *Can someone recommend *me * some ** references? * Thanks a lot Ashta [[alternative HTML version deleted]]

hi can someone recommend a book about ISDN and SS7? I've been hacking asterisk for a while, but it'd be good to get some better background within things... thanks roy

Digium is sending a couple of Asterisk representatives to ISPcon next week in Baltimore: Greg Boehnlein (author of AstWind) and Brian Capouch (professor at St. Joseph's College and author of an upcoming Asterisk book by Prentice-Hall). We will also have a 10 x 10' booth there dedicated to Asterisk. *Greg and Brian need some help manning the booth.* If you have a business centered around Asterisk and would like to help them out at the booth, please contact me directly, rsegrest@digium.com. The tutorials Greg and Br...