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# Re: st: saving the confidence interval as a scalar

 From Steven Samuels To statalist@hsphsun2.harvard.edu Subject Re: st: saving the confidence interval as a scalar Date Thu, 28 Jul 2011 17:56:02 -0400

```Michael, try the following:

*****************************************
sysuse auto, clear
svyset rep78 [pw = turn]
svy, subpop(if foreign==0): total trunk
matrix b = e(b)
scalar tot = b[1,1]
matrix v=e(V)
scalar v =v[1,1]
scalar bound =  ///
sqrt(v)*invttail(e(df_r),0.5*(1-c(level)/100))
scalar  ll = tot-bound
scalar  ul = tot + bound
di  c(level) "% Confidence Interval" _newline ///
"Estimate: " %8.0fc  tot ///
" ["%7.0fc  ll "," %8.0fc  ul "]"
******************************************

On Jul 28, 2011, at 12:12 PM, Monuteaux, Michael wrote:

Hello everyone,

I am estimating various parameters using a survey dataset.  I am running the following command:
svy: total myvar, subpop(adults)
I am able to save the point estimate as a scalar using the saved matrix, e(b).  But, I would like to also save the upper and lower confidence interval bounds as scalars, as well.  Is it possible to access these values as scalars or a matrix?

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