tlumley@u.washington.edu
2002-Nov-14 16:05 UTC
survreg (survival) reports erroneous results for left-censored (PR#2291)
On Wed, 13 Nov 2002, Jan de Leeuw wrote:> > No problemo. And, in fact, I get the same results in > the R-1.6.0 Carbon version.I don't. Could there be a G3/G4 issue? -thomas> --- Jan > > On Wednesday, November 13, 2002, at 02:05 PM, tim@timcohn.com wrote: > > > Full_Name: Tim Cohn > > Version: 1.6.1 > > OS: Macintosh OS X > > Submission from: (NULL) (130.11.34.250) > > > > > > The Mac version of survreg does not handle left-censored data > > correctly (at > > least the results are not what I get doing it other ways, and they are > > not the > > same as I get running R 1.6.1 in Windows 98se; the Windows 98 results > > are > > correct). On the windows version of R 1.6.1. > > > >> survreg(Surv(c(0,1,-1),c(T,T,F),type='left')~1,dist='gaussian') > > Call: > > survreg(formula = Surv(c(0, 1, -1), c(T, T, F), type = "left") ~ > > 1, dist = "gaussian") > > > > Coefficients: > > (Intercept) > > -0.2321569 > > > > Scale= 1.161135 > > > > Loglik(model)= -4.1 Loglik(intercept only)= -4.1 > > n= 3 > > > > > > ================> > > > The Macintosh OS X result for the same command is: > > > >> survreg(Surv(c(0,1,-1),c(T,T,F),type='left')~1,dist='gaussian') > > Call: > > survreg(formula = Surv(c(0, 1, -1), c(T, T, F), type = "left") ~ > > 1, dist = "gaussian") > > > > Coefficients: > > (Intercept) > > -0.7373613 > > > > Scale= 1.366282 > > > > Loglik(model)= -5.6 Loglik(intercept only)= -5.6 > > n= 3 > > > > > > -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- > > .-.-.-.-.- > > r-devel mailing list -- Read > > http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html > > Send "info", "help", or "[un]subscribe" > > (in the "body", not the subject !) To: > > r-devel-request@stat.math.ethz.ch > > _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._ > > ._._._._ > > > > > ==> Jan de Leeuw; Professor and Chair, UCLA Department of Statistics; > Editor: Journal of Multivariate Analysis, Journal of Statistical > Software > US mail: 9432 Boelter Hall, Box 951554, Los Angeles, CA 90095-1554 > phone (310)-825-9550; fax (310)-206-5658; email: deleeuw@stat.ucla.edu > homepage: http://gifi.stat.ucla.edu > > ------------------------------------------------------------------------ > ------------------------- > No matter where you go, there you are. --- Buckaroo Banzai > http://gifi.stat.ucla.edu/sounds/nomatter.au > > ------------------------------------------------------------------------ > ------------------------- > > -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- > r-devel mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html > Send "info", "help", or "[un]subscribe" > (in the "body", not the subject !) To: r-devel-request@stat.math.ethz.ch > _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._ >Thomas Lumley Asst. Professor, Biostatistics tlumley@u.washington.edu University of Washington, Seattle ^^^^^^^^^^^^^^^^^^^^^^^^ - NOTE NEW EMAIL ADDRESS -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-devel mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To: r-devel-request@stat.math.ethz.ch _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._
Apparently Analagous Threads
- survreg (survival) reports erroneous results for left-censored (PR#2293)
- survreg (survival) reports erroneous results for left-censored data (PR#2287)
- survreg() provides same results with different distirbutions for left censored data
- Parametric Survival Models with Left Truncation, survreg
- Survreg(), Surv() and interval-censored data