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From |
Michael McCulloch <mm@pinest.org> |

To |
statalist@hsphsun2.harvard.edu |

Subject |
Re: st: Re: problem with -artsurv- |

Date |
Fri, 24 Oct 2008 15:16:20 -0700 |

As always Martin, thanks for the sage advice. I wouldn't have known that...

Careful, though, if it has been -off- for a long time you may getsurprising (for you) behaviour in moments when it really matters.Make sure you are on high alert or -set varabbrev off- again afteryou are done with -artsurv-You might also like http://www.stata-journal.com/article.html?article=dm0016 HTH Martin _______________________ ----- Original Message ----- From: "Michael McCulloch" <mm@pinest.org> To: <statalist@hsphsun2.harvard.edu> Sent: Friday, October 24, 2008 11:44 PM Subject: Re: st: Re: problem with -artsurv-Brilliant! Thank you kindly.varabbrev on- and the -program- will run :-) HTH Martin _______________________ ----- Original Message ----- From: "Michael McCulloch" <mm@pinest.org> To: <statalist@hsphsun2.harvard.edu> Sent: Friday, October 24, 2008 10:57 PM Subject: Re: st: Re: problem with -artsurv-Thanks Martin. The location of the error is:-----------------------------------------------------------begin artsurv._condsrv ---- args sf csf - tempname small - scalar `small'=1e-16 = scalar __000001=1e-16 - by grp:gen double `csf'=`sf' if _n==1 = by grp:gen double cesf0=esf0 if _n==1 - by grp:replace `csf'=1 if _n>1 & `sf'[_n-1]<`small' = by grp:replace cesf0=1 if _n>1 & esf0[_n-1]<__000001 - by grp:replace `csf'=`sf'/`sf'[_n-1] if _n>1 & `sf'[_n-1]>=`small' = by grp:replace cesf0=esf0/esf0[_n-1] if _n>1 & esf0[_n-1]>=__000001 - replace `csf'=`small' if `csf'<`small' = replace cesf0=__000001 if cesf0<__000001-------------------------------------------------------------end artsurv._condsrv ---- gen double el0=-log(cesf) cesf not foundAs I said, -set tr on- and show us the location of the error... HTH Martin _______________________ ----- Original Message ----- From: "Michael McCulloch" <mm@pinest.org> To: <statalist@hsphsun2.harvard.edu> Sent: Friday, October 24, 2008 10:51 PM Subject: Re: st: Re: problem with -artsurv-What I'm trying to figure out is the reason for the error message: cesf not found r(111);Works well for me: **************ART - ANALYSIS OF RESOURCES FOR TRIALS (version 1.0.4,13 January 2005)A sample size program by Abdel Babiker, Patrick Royston &Friederike Barthel,MRC Clinical Trials Unit, London NW1 2DA, UK.Type of trial Superiority -time-to-event outcomeStatistical test assumed Unweighted logrank test (local) Number of groups 2 Allocation ratio Equal group sizes Total number of periods 3 Length of each period One year Survival probs per period (group 1) 0.794 0.630 0.500 Survival probs per period (group 2) 0.841 0.707 0.595 Number of recruitment periods 2 Number of follow-up periods 1 Method of accrual Uniform Recruitment period-weights 1 1 0 Hazard ratios as entered (groups 1,2) 1, 0.75 Alpha 0.050 (two-sided) Power (designed) 0.800 Total sample size (calculated) 1624 Expected total number of events 509 ************************* -set tr on- and show us where the error occurs... HTH Martin _______________________ ----- Original Message ----- From: "Michael McCulloch" <mm@pinest.org> To: "Statalist" <statalist@hsphsun2.harvard.edu> Sent: Friday, October 24, 2008 10:44 PM Subject: st: problem with -artsurv-Hello,I'm using the program -artsurv- which estimates sample sizeor power for survival data.When I invoke the command, as follows, using syntax confirmedby the program's author:. artsurv, method(l) edf0(0.5) hr(1,0.75) np(3) lg(1 2)ldf(.1;.1) wg(1 2) wdf(.3;.1) recrt(2 0,1,0) distant(0)detail(0) onesided(0) ni(0) tunit(1)I get an error message: cesf not found r(111); Could anyone shed some light on this? -- Best wishes, Michael McCulloch Pine Street Foundation 124 Pine St., San Anselmo, CA 94960-2674 Tel: (415) 407-1357 Fax: (415) 485-1065 mcculloch@pinestreetfoundation.org www.pinestreetfoundation.org * * 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/* * 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/

**References**:**st: problem with -artsurv-***From:*Michael McCulloch <mm@pinest.org>

**st: Re: problem with -artsurv-***From:*"Martin Weiss" <martin.weiss1@gmx.de>

**Re: st: Re: problem with -artsurv-***From:*Michael McCulloch <mm@pinest.org>

**Re: st: Re: problem with -artsurv-***From:*"Martin Weiss" <martin.weiss1@gmx.de>

**Re: st: Re: problem with -artsurv-***From:*Michael McCulloch <mm@pinest.org>

**Re: st: Re: problem with -artsurv-***From:*"Martin Weiss" <martin.weiss1@gmx.de>

**Re: st: Re: problem with -artsurv-***From:*Michael McCulloch <mm@pinest.org>

**Re: st: Re: problem with -artsurv-***From:*"Martin Weiss" <martin.weiss1@gmx.de>

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