Bookmark and Share

Notice: On April 23, 2014, Statalist moved from an email list to a forum, based at statalist.org.


[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: st: one stage cluster with preliliminary stratification


From   Steve Samuels <[email protected]>
To   [email protected]
Subject   Re: st: one stage cluster with preliliminary stratification
Date   Wed, 30 Jan 2013 17:14:30 -0500

Subir 

You told us what  what analysis you wish to do, but if it's descriptive, it will be easy to add the fpc() option, if appropriate, to Stas's -svyset- statements. See the help for -svyset-.

Steve

On Jan 30, 2013, at 9:30 AM, Stas Kolenikov wrote:

*** assuming n1, n2, m1, m2, N are contained in the identically named scalars

gen wgt = scalar(n1)/10 if stratum==1
replace wgt = scalar(n2)/8 if stratum==2
assert !missing(wgt)
* cluster size does not matter

*** option 1: poststrata
gen pstrata = 1
gen popsize = scalar(N)
svyset cluster [pw=wgt], strata( stratum ) poststrata( pstrata )
postweight( popsize )

*** option 2: rescale weights
sum wgt
generate wgt2 = wgt*scalar(N)/r(sum)
svyset cluster [pw=wgt2], strata( stratum )

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



On Wed, Jan 30, 2013 at 6:32 AM, Subir Mitra <[email protected]> wrote:
> ONE STAGE CLUSTER WITH PRELIMINARY STRATIFICATION -I stratify population N (members living in clusters , which is known) into 2 strata and  randomly pick up 10 clusters from 1st stratum and 8 clusters from 2nd stratum (stratum population n1 & n2  and total clusters m1 & m2 in both stratum also known) and all members of the clusters are sampled.
> 
> Any guidance to me to find the svyset command in this case, assuming N, m1,m2,n1 and n2 known and I want to make use of it? (The problem is from Schaeffer et al 1996-328 problem 8.19)
> 
> *
> *   For searches and help try:
> *   http://www.stata.com/help.cgi?search
> *   http://www.stata.com/support/faqs/resources/statalist-faq/
> *   http://www.ats.ucla.edu/stat/stata/

*
*   For searches and help try:
*   http://www.stata.com/help.cgi?search
*   http://www.stata.com/support/faqs/resources/statalist-faq/
*   http://www.ats.ucla.edu/stat/stata/


*
*   For searches and help try:
*   http://www.stata.com/help.cgi?search
*   http://www.stata.com/support/faqs/resources/statalist-faq/
*   http://www.ats.ucla.edu/stat/stata/


© Copyright 1996–2018 StataCorp LLC   |   Terms of use   |   Privacy   |   Contact us   |   Site index