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Re: st: Outreg margins error


From   Nick Cox <njcoxstata@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: Outreg margins error
Date   Thu, 6 Sep 2012 16:20:58 +0100

I don't think you are understanding what -margins- does. Look at the
help and you will see that it starts

margins [marginlist] [if] [in] [weight] [, response_options options]

    where marginlist is a list of factor variables or interactions that appear
    in the current estimation results.

So, you are offering

 tfhhh shg lntotalexp ...

to -margins- as a marginslist. My interpretation is that -margins- is
happy to accept -tfhhh shg-, whatever they are, as part of a
marginslist but bails out because -lntotalexp- is certainly not
acceptable.

Otherwise put, it's not enough that your syntax looks like what
Carsten was using as an example. It must also make sense to -margins.
Also, you really must read the help!

Nick

On Thu, Sep 6, 2012 at 4:08 PM, Wameq Raza <wameq.r@gmail.com> wrote:
> Dear Nick,
> Thanks for the response. Yes, the lntotalexp is the natural log of
> expenditure. My syntax was:
>
>  margins tfhhh shg lntotalexp lnhhsize fem0to13 fem36to55 fem55
> men0to13 men14to35 men36to55 men55 eduprim_hh edumid   ///
> _hh eduhigh_hh scst dumemp_hh2 dumemp_hh3 dumemp_hh4 dumemp_hh5
> dumemp_hh6 kanpur allahabad aillness1 aillness2 ail   ///
>  lness4 aillness5, post
>
> lntotalexp:  factor variables may not contain noninteger values
> r(452);
>
>
> Hopefully this syntax is correct following the previous response from
> Carsten. I've also tried getting the margins using the same syntax
> one variable at a time, but to no avail. Any suggestions?
> Wameq
>
> On Thu, Sep 6, 2012 at 2:02 PM, Nick Cox <njcoxstata@gmail.com> wrote:
>> My suggestions are:
>>
>> 1. The error means what it says: -lntotalexp- (presumably the log of
>> total expenditure) cannot be a factor variable.
>>
>> 2. The error arises from incorrect syntax, but you need to show us
>> _exactly_ what you typed with your data.
>>
>> 3. For "STATA" read "Stata" throughout.
>>
>> 4. Points 2 and 3 are covered by the Statalist FAQ, so you really
>> should read that before re-posting.
>>
>> Nick
>>
>> On Thu, Sep 6, 2012 at 11:01 AM, Wameq Raza <wameq.r@gmail.com> wrote:
>>> Dear Carsten and John,
>>> Thank you so very much for the replies. As for the syntax Carsten
>>> suggested, STATA gives me an error when estimating continuous
>>> variables such as the ln of expenditures. The error message it gives
>>> me is:
>>>
>>> -lntotalexp:  factor variables may not contain noninteger values-
>>>
>>> Any suggestions for this?
>>>
>> *
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>
>
>
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