thank you.i will read the book.good wishes.
At 2013-09-10 18:00:02,r-sig-epi-requ...@r-project.org wrote: >Send R-sig-Epi mailing list submissions to > r-sig-epi@r-project.org > >To subscribe or unsubscribe via the World Wide Web, visit > https://stat.ethz.ch/mailman/listinfo/r-sig-epi >or, via email, send a message with subject or body 'help' to > r-sig-epi-requ...@r-project.org > >You can reach the person managing the list at > r-sig-epi-ow...@r-project.org > >When replying, please edit your Subject line so it is more specific >than "Re: Contents of R-sig-Epi digest..." > > >Today's Topics: > > 1. Re: R-sig-Epi Digest, Vol 68, Issue 1 > (Pedro Emmanuel Alvarenga Americano do Brasil) > > >---------------------------------------------------------------------- > >Message: 1 >Date: Mon, 9 Sep 2013 09:32:37 -0300 >From: Pedro Emmanuel Alvarenga Americano do Brasil > <emmanuel.bra...@gmail.com> >To: r-sig-epi@r-project.org >Subject: Re: [R-sig-Epi] R-sig-Epi Digest, Vol 68, Issue 1 >Message-ID: > <CAFfGvyLTUX=du+nrpdqxettfn63evzpenhl9hxcec0sk2dv...@mail.gmail.com> >Content-Type: text/plain > >Well, > >I assume you are using the rms package. Calibration through bootstrap can >be conducted through the val.surv function. Penalizing degrees >of freedom can be conducted with the pentrace function. Other way of >calibration can also be conducted. > >I suggest you take a look at the book below. There are several examples of >R codes. Specially chapter 23. > > 1. >Steyerberg EW. Clinical Prediction Models: A Practical Approach to >Development, Validation, and Updating. 1o ed. Springer; 2008. > >Dr. Pedro Emmanuel A. A. do Brasil >http://blog.ipec.fiocruz.br/lapclin-chagas/ >Curriculum Lattes: http://lattes.cnpq.br/6597654894290806 >ResearchGate.net: https://www.researchgate.net/profile/Pedro_Brasil2/ >Instituto Nacional de Infectologia/Instituto de Pesquisa ClÃnica Evandro >Chagas >Fundação Oswaldo Cruz >Rio de Janeiro - Brasil >Av. Brasil 4365, >CEP 21040-360, >Tel 55 21 3865-9648 >e-mail: pedro.bra...@ipec.fiocruz.br >e-mail: emmanuel.bra...@gmail.com > >---Apoio aos softwares livres >www.zotero.org - gerenciamento de referências bibliográficas. >www.broffice.org ou www.libreoffice.org - textos, planilhas ou >apresentações. >www.epidata.dk - entrada de dados. >www.r-project.org - análise de dados. >www.ubuntu.com - sistema operacional > > >2013/9/4 <r-sig-epi-requ...@r-project.org> > >> Send R-sig-Epi mailing list submissions to >> r-sig-epi@r-project.org >> >> To subscribe or unsubscribe via the World Wide Web, visit >> https://stat.ethz.ch/mailman/listinfo/r-sig-epi >> or, via email, send a message with subject or body 'help' to >> r-sig-epi-requ...@r-project.org >> >> You can reach the person managing the list at >> r-sig-epi-ow...@r-project.org >> >> When replying, please edit your Subject line so it is more specific >> than "Re: Contents of R-sig-Epi digest..." >> >> >> Today's Topics: >> >> 1. help (???) >> >> >> ---------------------------------------------------------------------- >> >> Message: 1 >> Date: Wed, 4 Sep 2013 21:10:04 +0800 (CST) >> From: ??? <06dongsh...@163.com> >> To: r-sig-epi@r-project.org >> Subject: [R-sig-Epi] help >> Message-ID: <2b682ecc.208da.140e91815c7.coremail.06dongsh...@163.com> >> Content-Type: text/plain; charset="gbk" >> >> >> >> >> >> >> >> >> >> hi, dear friend , i am dealing with a survival data for cancer. a variable >> progression doesn't satisfy PH assumption, i have tried the paramatric >> survival models, but they did not fit very well. at last ,i tried the >> extension of Cox model with time-dependent variable, finding that the model >> fit well with the smallest AIC, and the average or weight HR is 1.6. when >> progression occured in the first follow-up year, the HR was biggest ,and HR >> gone down in the second year, like the picture showed. after having reading >> over the examples in R help documents, i am not sure if i can plot >> nomogram for 5 year survival prediction. and cph may did not work well >> when applied to the Cox model with time-dependent variable, i can use >> coxph, set " tt=function(x,t,...) {x *log(t)}" as a alternative. but most >> important, how can i complete the nomogram ,validate and calibrate.ie.setup >> may help,but not show in detail. >> can you help me to plot a nomogram? thanks for reading. >> >> Dong >> | | >> | | >> | | >> >> >> -------------- next part -------------- >> An HTML attachment was scrubbed... >> URL: < >> https://stat.ethz.ch/pipermail/r-sig-epi/attachments/20130904/7c6d0cf8/attachment.html >> > >> -------------- next part -------------- >> A non-text attachment was scrubbed... >> Name: coxnomogram.jpg >> Type: image/jpeg >> Size: 48758 bytes >> Desc: not available >> URL: < >> https://stat.ethz.ch/pipermail/r-sig-epi/attachments/20130904/7c6d0cf8/attachment.jpg >> > >> -------------- next part -------------- >> A non-text attachment was scrubbed... >> Name: ??.JPG >> Type: image/jpeg >> Size: 28650 bytes >> Desc: not available >> URL: < >> https://stat.ethz.ch/pipermail/r-sig-epi/attachments/20130904/7c6d0cf8/attachment.jpe >> > >> -------------- next part -------------- >> A non-text attachment was scrubbed... >> Name: coxnomogram.jpg >> Type: image/jpeg >> Size: 48758 bytes >> Desc: not available >> URL: < >> https://stat.ethz.ch/pipermail/r-sig-epi/attachments/20130904/7c6d0cf8/attachment-0001.jpg >> > >> -------------- next part -------------- >> A non-text attachment was scrubbed... >> Name: ??.JPG >> Type: image/jpeg >> Size: 28650 bytes >> Desc: not available >> URL: < >> https://stat.ethz.ch/pipermail/r-sig-epi/attachments/20130904/7c6d0cf8/attachment-0001.jpe >> > >> >> ------------------------------ >> >> _______________________________________________ >> R-sig-Epi mailing list >> R-sig-Epi@r-project.org >> https://stat.ethz.ch/mailman/listinfo/r-sig-epi >> >> >> End of R-sig-Epi Digest, Vol 68, Issue 1 >> **************************************** >> > > [[alternative HTML version deleted]] > > > >------------------------------ > >_______________________________________________ >R-sig-Epi mailing list >R-sig-Epi@r-project.org >https://stat.ethz.ch/mailman/listinfo/r-sig-epi > > >End of R-sig-Epi Digest, Vol 68, Issue 2 >**************************************** [[alternative HTML version deleted]]
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