Thanks a lot. I used survfit to generate KM plots but I will try to figure out to find the corresponding returned value for KM estimate. Thank you for your invaluable help.
On Mon, Jul 18, 2011 at 8:28 PM, David Winsemius <dwinsem...@comcast.net>wrote: > > On Jul 18, 2011, at 10:42 AM, Kishor Tappita wrote: > > Ok David, Thanks for clearing my misconception. Then could you please >> suggest me how I could get the KM estimate for a time point. I remember >> reading the formula >> for calculating the KM. Do, I have to write a method to compute the KM >> estimate or will the survival package provide it for me? >> > > ?survfit > ?survfit.formula > > -- > david. > > > >> >> Thank you so much in advance. >> >> Regards, >> Kishor >> >> On Mon, Jul 18, 2011 at 7:52 PM, David Winsemius <dwinsem...@comcast.net> >> wrote: >> >> On Jul 18, 2011, at 10:10 AM, Kishor Tappita wrote: >> >> Dear David, >>> >>> Thank you for your reply. I realized that the summary function can help >>> me in finding the the order of the curves. >>> The 0.95UCL (95% upper confidence level) column in particular seems to >>> follow the same pattern as the curves on the plot. >>> >> >> That would not have been my prediction. The 95% UCL could be high simply >> because the sample size in that group was small. >> >> -- >> David >> >> >>> I am new to survival analysis, so please correct me if I am wrong. >>> >>> Thanks, >>> Kishor >>> >>> >>> >>> On Mon, Jul 18, 2011 at 3:21 AM, David Winsemius <dwinsem...@comcast.net> >>> wrote: >>> >>> On Jul 17, 2011, at 11:27 AM, Kishor Tappita wrote: >>> >>> Dear List, >>> >>> I used survival package of R and was able to generate KM plots. Now I >>> need >>> >>> help in finding the top curve in a non-visualization way. I mean to say >>> that >>> I would like to know the order of curves through any existing methods >>> rather >>> than looking at the KM plots. I need this information as I am generating >>> KM >>> plots for thousands of genes. >>> >>> Why aren't you taking the KM estimate at a particular time? >>> >>> -- >>> David >>> >>> >>> I would really appreciate if some one can direct me and help me. >>> >>> Thanks, >>> Regards, >>> Kishor >>> >>> [[alternative HTML version deleted]] >>> >>> ______________________________**________________ >>> R-help@r-project.org mailing list >>> https://stat.ethz.ch/mailman/**listinfo/r-help<https://stat.ethz.ch/mailman/listinfo/r-help> >>> PLEASE do read the posting guide http://www.R-project.org/** >>> posting-guide.html <http://www.R-project.org/posting-guide.html> >>> and provide commented, minimal, self-contained, reproducible code. >>> >>> David Winsemius, MD >>> West Hartford, CT >>> >>> >>> >> >> David Winsemius, MD >> West Hartford, CT >> >> >> > David Winsemius, MD > West Hartford, CT > > [[alternative HTML version deleted]] ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
