Re: st: Re: problem with -artsurv-

["Martin Weiss" <martin.weiss1@gmx.de>]

As 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 
> > outcome
> > Statistical 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 size or power for 
> > > survival data.
> > > When I invoke the command, as follows, using syntax confirmed by 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
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> >
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