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RE: st: mi estimate and GLLAMM
From
"Pesola, Francesca" <[email protected]>
To
"[email protected]" <[email protected]>
Subject
RE: st: mi estimate and GLLAMM
Date
Fri, 4 Apr 2014 13:43:43 +0000
Thank you!
-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of Stas Kolenikov
Sent: 04 April 2014 14:22
To: [email protected]
Subject: Re: st: mi estimate and GLLAMM
Re-impute that particular replicate (I heard some people call it implicate).
-- Stas Kolenikov, PhD, PStat (ASA, SSC)
-- Principal Survey Scientist, Abt SRBI
-- Opinions stated in this email are mine only, and do not reflect the position of my employer
-- http://stas.kolenikov.name
On Thu, Apr 3, 2014 at 10:17 AM, Richard Goldstein <[email protected]> wrote:
> it means exactly what it says: for the fourth set of imputed values
> your model failed to converge; you might want to try running the model
> on only the fourth set and trying to track down the problem that way
>
> Rich
>
> On 4/3/14, 11:03 AM, Pesola, Francesca wrote:
>> Hi Thanks for your reply. I am using Stata 11.
>>
>> I have added the cmdok option - below - :
>>
>> xi: mi estimate, cmdok: gllamm topic3g_w i.wave, i(ID) base(1)
>> link(mlogit) family(binomial)
>>
>> However, Stata stops as I get an error message saying:
>>
>> convergence not achieved
>> model did not converge on m=4
>> r(498);
>> end of do-file
>> r(498);
>>
>> Any suggestion on why this might be and what to do?
>>
>> Cheers,
>> F
>>
>> -----Original Message-----
>> From: [email protected]
>> [mailto:[email protected]] On Behalf Of Stas
>> Kolenikov
>> Sent: 03 April 2014 15:14
>> To: [email protected]
>> Subject: Re: st: mi estimate and GLLAMM
>>
>> What version of Stata are you using? -mi estimate- has -cmdok- option that you need to specify to proceed with user-written commands. With some luck, -variance- option may give you the variances of the random effects, as by default -mi- would report the results in whatever metric -gllamm- uses to parameterize the random effects (Cholesky decomposition, if I recall correctly).
>>
>> -- Stas Kolenikov, PhD, PStat (ASA, SSC)
>> -- Principal Survey Scientist, Abt SRBI
>> -- Opinions stated in this email are mine only, and do not reflect
>> the position of my employer
>> -- http://stas.kolenikov.name
>>
>>
>>
>> On Thu, Apr 3, 2014 at 5:30 AM, Pesola, Francesca <[email protected]> wrote:
>>> I have imputed my data using multiple imputation and I would now like to analyse the data using GLLAMM; however, Stata produces an error message which says GLLAMM is not supported by mi estimate.
>>>
>>> I know mi estimate supports the xt-family commands for clustered data but there does not seem to be an xt command for multinomial logistic regression, which is what I need.
>>>
>>> Any suggestion would be very much appreciated!
>>>
>>> Thanks,
>>> Francesca
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