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From |
agnes cheah <agnesxie4@gmail.com> |

To |
statalist@hsphsun2.harvard.edu |

Subject |
Re: st: RE: How to overlay four Cox survival curves in one graph |

Date |
Fri, 19 Apr 2013 09:09:13 +1000 |

Hi Thanks Tim and Nick. However, I am not sure which words I need to replace with variable names or commands to draw the 4 curves in one graph. Do I have to save the graphs into memory and call in out again later? Just to put it in context, I used these commands to plot Cox survival curves each time after performing the stcox regression stcurve, survival at 1(group=0 at 2(group=1)- plotted two lines based on group stcurve, survival at 1(Drug=1) at 2(Drug=2)- plotted two lines based on Drug Thank you Agnes On Thu, Apr 18, 2013 at 8:04 PM, Nick Cox <njcoxstata@gmail.com> wrote: > This should work too, in the same example. > > line basesurvest* _t, connect(J ..) sort legend(order(1 "1" 2 "2" 3 "3")) > > Nick > njcoxstata@gmail.com > > On 18 April 2013 10:58, Tim Evans <Tim.Evans@wmciu.nhs.uk> wrote: > >> Can you run -stcox- with and estimate the basesurv. You should then be able to construct your survival curves in one graph using something like this: >> >> forval i = 1/3 { >> stcox if whatever==`i', estimate basesurv(basesurvest`i') >> } >> >> line basesurvest1 _t, connect(J) sort || /* >> */ line basesurvest2 _t, connect(J) sort || /* >> */ line basesurvest3 _t, connect(J) sort > > agnes cheah > >> I have plotted two separate Cox survival curves (corresponding to two Cox models). How do I overlay the two plots (containing 2 curves, because stcurve, by variable command used) into one single graph)? I tried graph combine (not what I want) and addplot (does not seem to work). > > * > * For searches and help try: > * http://www.stata.com/help.cgi?search > * http://www.stata.com/support/faqs/resources/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/faqs/resources/statalist-faq/ * http://www.ats.ucla.edu/stat/stata/

**Follow-Ups**:**Re: st: RE: How to overlay four Cox survival curves in one graph***From:*Nick Cox <njcoxstata@gmail.com>

**References**:**st: RE: How to overlay four Cox survival curves in one graph***From:*Tim Evans <Tim.Evans@wmciu.nhs.uk>

**Re: st: RE: How to overlay four Cox survival curves in one graph***From:*Nick Cox <njcoxstata@gmail.com>

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