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Re: st: strata with single sampling units
From
[email protected]
To
[email protected]
Subject
Re: st: strata with single sampling units
Date
Thu, 4 Mar 2010 22:52:41 -0500
I'm glad to hear that it is working for you. Make sure to check
that there are no strata of the non-self-representing units which
contain only one unit. That will sometimes happen when you analyze
subpopulations. (If it does happen, join each offending stratum to an
adjacent stratum.
-Steve
On Thu, Mar 4, 2010 at 4:35 PM, <[email protected]> wrote:
> Steve,
> I am now using:
>
> svyset psu [pweight=weight], strata(stratum) singleunit(certainty);
>
> This works in that I get variance estimates, and they are often much
> smaller than what one gets ignoring the stratum variable. However, the
> odd thing is that when I try to replicate their published estimates
> (proportions) and SEs, I get basically the same SEs if I ignore the
> stratum variable. The SEs I get using -singleunit (certainty)- tend to
> be much smaller.
Steve Samuels
[email protected]
18 Cantine's Island
Saugerties NY 12477
USA
845-246-0774
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