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st: time series and SUR


From   "Teresa Linz" <tlinz@uni-bonn.de>
To   statalist@hsphsun2.harvard.edu
Subject   st: time series and SUR
Date   Tue, 29 Jul 2008 16:03:48 +0200

Hi all together,

I have maybe a more theoretical question rather than a practical. I am estimating time series data with a SUR model in Stata. Since my data is not stationary I differenced it. Does anybody know whether this is allowed in a SUR model or whether I have to proceed with the error correction model now?
Thank you for your comments




On Tue, 29 Jul 2008 08:28:24 -0500
Steven Samuels <sjhsamuels@earthlink.net> wrote:


To describe your sample, use ordinary, non-survey, commands. Survey commands are intended to estimate characteristics of the sampled population, not the sample itself. To me, the most important descriptor of a sample cell is the number of observations.

-Steve
On Jul 25, 2008, at 2:01 PM, Chao Yawo wrote:


Hi,

I am using svy commands to analyze a DHS dataset.

As a usual prerequisite, I want to run some descriptive statistics on
my sample. I can use the regular tabulate or fre command to produce
frequency distributions.

However, I realized that svy has a "tabulate" or "proportions" option
that could produce frequency distributions/estimates per variable. I
run both and realized slight differences between the two frequencies
outputs.

Which one should I use - I am leaning towards using the one with the
svy: prefix.

I would appreciate any thoughts and pointers.

thanks - CY.
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Teresa Linz, M.Sc.

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Center for Development Research

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