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st: RE: RE: RE: bootstrap help


From   "Patrick Sturgis" <p.sturgis@surrey.ac.uk>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: RE: RE: RE: bootstrap help
Date   Fri, 11 Apr 2003 23:50:52 +0100

Jiang Tao replied offlist and has solved the problem - it worked when
program was entered directly. Thanks again,

Patrick

-----Original Message-----
From: owner-statalist@hsphsun2.harvard.edu
[mailto:owner-statalist@hsphsun2.harvard.edu]On Behalf Of Steichen,
Thomas
Sent: 11 April 2003 23:04
To: statalist
Subject: st: RE: RE: bootstrap help


OK, the next correction is to name the global as S_1
(note the capital S and the underscore before the 1).

> -----Original Message-----
> From: Patrick Sturgis [mailto:p.sturgis@surrey.ac.uk]
> Sent: Friday, April 11, 2003 5:53 PM
> To: statalist@hsphsun2.harvard.edu
> Subject: st: RE: bootstrap help
>
>
> I've tried that and still get the same error message. Ado
> file now reads:
>
> program define alphatest
> 	version 7.0
> 	if "`1'" == "?" {
> 		global s1 "alphatest"
> 		exit
> 	}
> 	tempname y
> 	alpha bef1 bef2 bef3 bef4
> 	scalar `y' = r(alpha)
> 	alpha aft1 aft2 aft3 aft4
> 	post `1' (`y'-`r(alpha)')
> end
>
> Patrick
>
> -----Original Message-----
> From: owner-statalist@hsphsun2.harvard.edu
> [mailto:owner-statalist@hsphsun2.harvard.edu]On Behalf Of
> Steichen, Thomas
> Sent: 11 April 2003 22:31
> To: statalist
> Subject: st: RE: bootstrap help
>
>
> Your leading single quotes should be back-quotes... for
> example, '1' should be `1'.
>
> Tom
> > -----Original Message-----
> > From: Patrick Sturgis [mailto:p.sturgis@surrey.ac.uk]
> > Sent: Friday, April 11, 2003 5:21 PM
> > To: statalist@hsphsun2.harvard.edu
> > Subject: st: bootstrap help
> >
> >
> > Stata 7.0
> >
> > I'm having problems getting a bootstrap to work. I'm trying
> > to get standard errors for the difference between two
> > Cronbach's alpha coefficients. I've used the example of
> > bootstrapping the ratio of two means from the stata 7 manual
> > (A-G p 171) as a template to produce the following ado file
> > (bef* are the first 4 variables and aft* the second 4 that I
> > wish to compare):
> >
> > program define alphatest
> > 	version 7.0
> > 	if "'1'" == "?" {
> > 		global s1 "alphatest"
> > 		exit
> > 	}
> > 	tempname y
> > 	alpha bef1 bef2 bef3 bef4
> > 	scalar 'y' = r(alpha)
> > 	alpha aft1 aft2 aft3 aft4
> > 	post '1' ('y' - 'r(alpha)')
> > end
> >
> > Every time I run it (bstrap aphatest, reps(100)  I get the
> > following error
> > message:
> >
> > unexpected	end of file
> > "alphatest	?" returned:
> > unexpected	end of file
> >
> > I have stored the ado file in my c:/stata/personal folder.
> > Any ideas where I'm going wrong? Thanks
> >
> > Patrick
> >
> > *
> > *   For searches and help try:
> > *   http://www.stata.com/support/faqs/res/findit.html
> > *   http://www.stata.com/support/statalist/faq
> > *   http://www.ats.ucla.edu/stat/stata/
> >
>
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