Re: st: Re: problem with -artsurv-

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

This is a line for the server to eat


Analysis: type -query other- and I bet you have -varabbrev- "off". -set
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 found
>
>
>
>
>
>
> > 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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