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Re: st: svyselmlog - singleton cluster detected
From
"Joao Ricardo F. Lima" <[email protected]>
To
[email protected]
Subject
Re: st: svyselmlog - singleton cluster detected
Date
Thu, 31 Mar 2011 10:34:54 -0300
Nick is right here.
You must have variables with missing values, the var_dep of the main equation.
You can do the -svydes var_dep, single- and see if there are stratum
with a singleton
PSU, correct (if exists) and run the -svyselmlog-.
Joao Lima
2011/3/31 Nick Cox <[email protected]>:
> -svyselmlog- is from SSC. Please remember to specify where
> user-written commands you refer to come from.
>
> Are you issuing any -if- or -in- restrictions? Are there missing
> values in any of those variables? Those are possible ways in which
> -svyselmlog- might see fewer observations than -svydes-.
>
> Nick
>
> On Thu, Mar 31, 2011 at 1:59 PM, Murod Aliyev <[email protected]> wrote:
>
>> I am using svyselmlog to estimate consumption levels for employees of different
>> categories: wage, self-employed, entrepreneurs, unemployed. Data are from
>> stratified survey. However, svyselmlog returns an error message “singleton
>> cluster detected”. svydes command does not reveal any stratum with a singleton
>> PSU. Therefore, I am stuck as I do not understand the reason for the error
>> message to appear and I do not know how to solve the problem.
>
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>
--
---------------------------------------------------------
João Ricardo F. de Lima
Pesquisador A - Economia Aplicada
Embrapa Semiárido
e-mail: [email protected]
fone: +55 (87) 3862-1711 Ramal: 167
home-page: www.cpatsa.embrapa.br
----------------------------------------------------------
*
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