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From |
sjsamuels@gmail.com |

To |
statalist@hsphsun2.harvard.edu |

Subject |
Re: st: RE: AW: customising ranges of the axis in Kaplan Meier plot |

Date |
Tue, 6 Oct 2009 14:40:56 -0400 |

This question has been before on statalist, and a google search (statalist restrict range kaplan-meier) would have found an answer (e.g. http://www.stata.com/statalist/archive/2005-03/msg00229.html) The ordinary graph axis commands don't work with -sts graph-. The only way to restrict the axes is to generate the points for the CDF with -sts- gen (see below) and plot them with -twoway-. I use -levelsof- below. Nick Cox pointed out that -separate- should do essentially the same thing, but I've observed that the plot connections look different. To make the graph look nice you might have to augment the data for each group with a fake point at (0,0), since zero times are not allowed in -sts- . -Steve ******************************************* sts gen surv = s, by(factor) gen cdf =100*(1-surv) **************************************************** * Create a separate CDF for each factor level **************************************************** sort factor outcome levelsof factor, local(fac_lev) foreach i of local fac_lev { gen ydf`i' = cdf if factor==`i' } twoway scatter ydf* outcome if cdf<= 0.5, connect(J J....) ************************************************** On Tue, Oct 6, 2009 at 9:57 AM, Isabelle Deltour <deltour@cancer.dk> wrote: > Thank you, Martin, for pointing out this article. > Isabelle > > -----Original Message----- > From: owner-statalist@hsphsun2.harvard.edu [mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of Martin Weiss > Sent: Tuesday, October 06, 2009 3:26 PM > To: statalist@hsphsun2.harvard.edu > Subject: st: AW: customising ranges of the axis in Kaplan Meier plot > > > <> > > > http://www.stata-journal.com/sjpdf.html?articlenum=gr0019 > > > > HTH > Martin > > > -----Ursprüngliche Nachricht----- > Von: owner-statalist@hsphsun2.harvard.edu > [mailto:owner-statalist@hsphsun2.harvard.edu] Im Auftrag von Isabelle > Deltour > Gesendet: Dienstag, 6. Oktober 2009 15:25 > An: statalist@hsphsun2.harvard.edu > Betreff: st: customising ranges of the axis in Kaplan Meier plot > > Hi listers, > > My dataset contains cancer occurrence in children, which is a rare > event. > I have produced Kaplan-Meier survival graphs. > > . sts graph, by(var1) > > The 2 lines corresponding to the groups of var1 are superimposed. (and > the overwhelming > majority of subjects have not experienced the event by the end of the > follow up). > I wanted to enlarge the y axis and focus the graph on the area of the y > values between 0.9 till 1, > where the survival curve is placed. > However, I have not succeeded to modify the scale using the ylabel > option. > > . sts graph , by(var1) ylabel(.9 (.05) 1) > > I would appreciate any suggestions. > Isabelle > > * > * For searches and help try: > * http://www.stata.com/help.cgi?search > * http://www.stata.com/support/statalist/faq > * http://www.ats.ucla.edu/stat/stata/ > > > * > * For searches and help try: > * http://www.stata.com/help.cgi?search > * http://www.stata.com/support/statalist/faq > * http://www.ats.ucla.edu/stat/stata/ > > * > * For searches and help try: > * http://www.stata.com/help.cgi?search > * http://www.stata.com/support/statalist/faq > * http://www.ats.ucla.edu/stat/stata/ > -- Steven Samuels sjsamuels@gmail.com 18 Cantine's Island Saugerties NY 12477 USA 845-246-0774 * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/

**Follow-Ups**:**RE: st: RE: AW: customising ranges of the axis in Kaplan Meier plot***From:*"Nick Cox" <n.j.cox@durham.ac.uk>

**References**:**st: customising ranges of the axis in Kaplan Meier plot***From:*"Isabelle Deltour" <deltour@cancer.dk>

**st: RE: AW: customising ranges of the axis in Kaplan Meier plot***From:*"Isabelle Deltour" <deltour@cancer.dk>

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