search for: mayoresearch

Dear R List, I want to download kinship_1.2_S.tar.gz in http://mayoresearch.mayo.edu/mayo/research/biostat/splusfunctions.cfm to R. Once save this file to C:\, how I could load into R? I am working in Windows XP. Usually what I do is, I go to "packages" and then "install packages from local zip files". This procedure fails for .tar.gz files. Can someone...

...Tom Fleming originally got the data from me, so I'm fairly confident in calling my Mayo version the authoritative one). I'll make sure this gets fixed. You can grab a correct data set from our department web page. Code is below. Terry Therneau pbcurl <- "http://mayoresearch.mayo.edu/mayo/research/biostat/upload/therneau_upload/pbc.d at" pbc <- read.table(pbcurl, header=F, col.names=c('id', 'time', 'status', 'trt', 'age', 'sex', 'ascites', 'hepato'...

Hi! Could you please explain the difference between "prior" and "weight" in rpart? It seems to be the same. But in this case why including a weight option in the latest versions? For an unbalanced sampling what is the best to use : weight, prior or the both together? Thanks a lot. Aur?lie Davranche.

Hi, I'm using survreg() from the survival package for parametric survival regression (modelling inter-arrival times of patients to a waiting list as exponentially distributed, with various regressors such as queue size and season). Does anyone know which algorithm survreg() uses for this? Thanks, Gad -- Gad Abraham Department of Mathematics and Statistics The University of Melbourne

Hi everyone, We are looking for some data sets working with relative risk mortality. so, someone know where can I find the data.mgus dataset and the data.mgus? Using 1384 records from Minnesota. This data set are used in the : Robert A. Kyle, Terry M. Therneau, S. Vincent Rajkumar, Janice R. Offord, Dirk R. Larson, Matthew F. Plevak, and L. Joseph Melton III. A long-term study of prognosis in

Hi, I've searched online, in a few books, and in the archives, but haven't seen this. I believe that xerror is scaled to rel error on the first split. After fitting an rpart object, is it possible with a little math to determine the percentage of true classifications represented by a xerror value? -seth -- View this message in context:

...nding how the rpart function computes the "improve" (which is given in fit$split) when using the split='information' parameter. Thanks to Professor Atkinson help, I was able to find how this is done in the case that split='gini'. By following the explanation here: http://mayoresearch.mayo.edu/mayo/research/biostat/upload/61.pdf But the calculation of the information (deviance) impurity is still a mystery for me. Might you help with explaining it? Bellow is some R code simply showing how the gini is computed (and how the information is not as clear) # creating data set.seed(...

...for the analysis of indirectly measured haplotypes. The statistical methods assume that all subjects are unrelated and that haplotypes are ambiguous (due to unknown linkage phase of the genetic markers). The main functions are: haplo.em, haplo.glm, haplo.score, haplo.power, and seqhap. URL: http://mayoresearch.mayo.edu/mayo/research/schaid_lab/software.cfm NEWS: Changes in version 1.5.2: o Added methods for haplo.glm object: anova, residuals, vcov, fitted o Updated haplo.glm to work more like glm object with methods o Took out S-PLUS functionality for haplo.glm o Remove note...

...for the analysis of indirectly measured haplotypes. The statistical methods assume that all subjects are unrelated and that haplotypes are ambiguous (due to unknown linkage phase of the genetic markers). The main functions are: haplo.em, haplo.glm, haplo.score, haplo.power, and seqhap. URL: http://mayoresearch.mayo.edu/mayo/research/schaid_lab/software.cfm NEWS: Changes in version 1.5.2: o Added methods for haplo.glm object: anova, residuals, vcov, fitted o Updated haplo.glm to work more like glm object with methods o Took out S-PLUS functionality for haplo.glm o Remove note...

Hi all, Sorry if this has been answered already, but I couldn't find it in the archives or general internet. Is it possible to implement the gompertz distribution as survreg.distribution to use with survreg of the survival library? I haven't found anything and recent attempts from my side weren't succefull so far. I know that other packages like 'eha' and

Dear all, I am having a (really) hard time getting pyears to work together with a ratetable to give me the number of expected events (deaths). I have the following data: dos, date of surgery, as.Date dof, date of last follow-up, as.Date dos, date of surgery, as.Date sex, gender, as.factor (female,male) ev, event(death), 0= censored at time point dof, 1=death at time point dof Could someone