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# Re: st: SVY medians and Elixhauser

 From Stas Kolenikov To "statalist@hsphsun2.harvard.edu" Subject Re: st: SVY medians and Elixhauser Date Fri, 12 Apr 2013 08:50:22 -0500

```Never mind the first table, Mike, it's just I should've hidden some
intermediate calculations better in my code :-\. (For those interested
in technicalities -- these are deviations from the corresponding
percentage points as needed by the Woodruff method.)

-- Stas Kolenikov, PhD, PStat (SSC)
-- Senior Survey Statistician, Abt SRBI
-- Opinions stated in this email are mine only, and do not reflect the
position of my employer
-- http://stas.kolenikov.name

On Fri, Apr 12, 2013 at 2:25 AM, Mike Butterfield
<mcbutterfield@gmail.com> wrote:
> Thanks Stas, I think I got it to work!  So it looks like the median
> cost of a person with an infection is \$37192, which I get from the
> second table.  Could you clue me in to what's being described in the
> first table though?
> -Mike
>
> . epctile totchg, p(50) over(infection) svy speclab
> (running mean on estimation sample)
> ...
>
> --------------------------------------------------------------
>              |             Linearized
>         Over |       Mean   Std. Err.     [95% Conf. Interval]
> -------------+------------------------------------------------
> __000006     |
>            0 |  -5.69e-06   .0110628     -.0217157    .0217043
>            1 |   -.000291   .0201521     -.0398379     .039256
> --------------------------------------------------------------
>
> Percentile estimation
> ------------------------------------------------------------------------------
>              |             Linearized
>       totchg |      Coef.   Std. Err.      z    P>|z|     [95% Conf. Interval]
> -------------+----------------------------------------------------------------
>        p50_0 |      23533        626    37.59   0.000     22306.06    24759.94
>        p50_1 |      37192       1691    21.99   0.000      33877.7     40506.3
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```