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Re: st: Ado File for MI Estimation Stata 12
Donna L Quadri <firstname.lastname@example.org>
Re: st: Ado File for MI Estimation Stata 12
Fri, 11 Nov 2011 08:49:09 -0500
Thank you, that was very helpful.
On Fri, Nov 11, 2011 at 4:45 AM, Nick Cox <email@example.com> wrote:
> I think you are bundling together different problem reports which I have flagged (a) (b) (c) in your posting.
> You will get pertinent advice faster -- and avoid misleading list members with what turn out to be side issues -- by posting in more detail with concrete (not schematised) examples of your real commands. See the Statalist FAQ for advice and especially note the injunction:
> "Say exactly what you typed and exactly what Stata typed (or did) in response. N.B. exactly! If you can, reproduce the error with one of Stata's provided datasets or a simple concocted dataset that you include in your posting."
> Addressing (a):
> The -cmdok- option is thus revealed to be necessary but not sufficient if -mi- does not explicitly support an estimation command. That is, -factor- is an estimation command but of idiosyncratic kind and in particular it does not leave behind certain e-class results that are essential for -mi- to work. The way ahead is closed to you on this route. It is not clear quite what you expect -factor- to impute, in any case.
> At a wild guess, you are misreading -mi- as a kind of all-purpose framework for doing any model estimation even if you have missing values. It is very general, but not that general, at least at present.
> What to do next depends on your goal. Perhaps -sem- will allow you to formulate a similar if not identical factor model. Others are better placed to make constructive suggestions but I think they would need to know much more about your substantive goals.
> Addressing (b) and (c):
> The full commands would help people provide better advice.
> Donna L Quadri [edited]
> When using the syntax mi estimate, cmdok: factor x1 x2 x3..... The
> error message I receive is:
> matrix e(b) is not set
> matrix e(V) is not set
> when using the syntax mi estimate, cmdok: sem ... it worked fine.
> When performing estat gof on the sem estimation, received the error
> invalid subcommand gof
> same response with mi estimate, cmdok: anova....it worked fine but no
> estat commands did. Received same error message.
> On Thu, Nov 10, 2011 at 2:19 PM, Nick Cox <firstname.lastname@example.org> wrote:
>> You don't show us any of your syntax so it is difficult to comment. -ok- is an option of -mi estimate-, so your call would start
>> mi estimate, ok: <whatever>
>> except that there may be other options too.
> Donna L Quadri
>> I must not have the correct syntax for the cmdok option because I
>> receive errors that I did not set it correctly. That would be
>> preferable because I have never set up a program in Stata before and
>> having challenges doing so correctly.
>> Does the cmdok option require the program? Wasn't able to find a
>> sample of the correct syntax to follow. Again, thanks,
> On Thu, Nov 10, 2011 at 2:01 PM, Richard Williams
>>> I'm not totally sure I understand the question, but you can set up the
>>> properties for a program to allow mi. See
>>> help program_properties##mi
>>> With -mi estimate- you can also use the -cmdok- option for unsupported
>>> commands. See
>>> help mi estimate
> At 01:36 PM 11/10/2011, Donna L Quadri wrote:
>>>> Do you know of an existing ado-file that permits estimation commands
>>>> not currently available with mi estimate? If not, any advice to a
>>>> first time programming effort in Stata 12. would be much appreciated.
>>>> I am using Stata IC/12.0 and wish to use anova, factor, and the new
>>>> sem functions. It would be a program beginning with
>>>> mi_cmd.....according to the Technical note.
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