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st: SPost question- recording confidence intervals with praccum
From
Tom Wood <[email protected]>
To
[email protected]
Subject
st: SPost question- recording confidence intervals with praccum
Date
Fri, 2 Apr 2010 00:09:28 -0500
With the very useful SPost commands, I have encountered a quirk with one of
its command. When I use praccum after estimating a model, it refuses to
record the confidence intervals for the point estimates. I intend to use
both sets of confidence intervals with the twoway (rarea... syntax.
So I do the following
quietly probit y x1 x2 x1*x2.....
forvalues count = -4.238(.28)1.68 { # these are the range of my x1
variables. I intend to include this on my x axis
2. local int = `count' * .125 # i will hold x2 at this value
for one plot
3. quietly prvalue, x(x1=`count' x1*x2=`int' x2= .125) rest(mean) brief
level(95) delta
4. praccum, using(mlc) xis(`count')
5. }
praccum, using(mlc) gen(lct)
which generates this output
Variable | Obs Mean Std. Dev. Min Max
-------------+----------------
----------------------------------------
lctx | 25 -2.268302 1.822032 -4.4389 .93107
lctp0 | 25 .4578371 .0320936 .4017878 .496179
lctp1 | 25 .5421629 .0320936 .503821 .5982122
new variables cannot be uniquely named or already defined #And THIS is the
big obstacle
r(110);
Ideally, I'd like another four columns of variables- lctp1ub, lctp1lb,
lctp0ub, lctp0lb- the default of the prgen command.
I appreciate I'm probably missing something simple in my loop- could anyone
tell me the proper way to specify this loop?
Thanks, I really appreciate the assistance
Tom Wood
Political Science
University of Chicago
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