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Re: st: Re: ivqreg


From   Hossein Zare <hzare52@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: Re: ivqreg
Date   Mon, 1 Apr 2013 21:36:58 -0400

Thank you Billy, actually the model works with ivreg, it means there
is no problem with the dummies, I think its the problem of ado file. I
will try to contact him, Thanks.

On Mon, Apr 1, 2013 at 9:32 PM, William Buchanan
<william@williambuchanan.net> wrote:
> Hi Hossein,
>
> Have you examined the distribution of your dummy variables and reference group?  If you have educ_1, educ_2, and educ_3, have you attempted to fit the model excluding one of those dummy variables?  One of the author's advisors (J. Wooldridge) occassionally chimes in on the Statalist.  If you believe that your model should fit the data without problems then it would be a good idea to contact the author of the program directly.
>
> - Billy
>
> On Apr 1, 2013, at 6:26 PM, Hossein Zare <hzare52@gmail.com> wrote:
>
>> Hi Billy,
>>
>> Thank you for your prompt response.
>> I used the ado file written by (Kwak, D. W.), please look at this
>> link: [https://www.msu.edu/~kwakdo/ivqreg.pdf.]
>> I tried to used this in the quantile regression model:
>> ivqreg log_earn age age2 married educ_* (diseased=visit ) , quantil(.1)
>> In this model educ (is sveral dummy for educ1, educ2 and educ3), I
>> create this dummy because this command doesn't work with i.educ.
>> When I run the model after creating 4 _cons give me this message
>> (conformability error).
>> Actually the problem is that; I cannot include the several dummy for
>> educ or the other variables in the model, but if I just use one dummy
>> for educ ( e.g. educ1) its okey.
>> I hope I could explain the problem.
>>
>> Thank you, HZ
>>
>>
>> On Mon, Apr 1, 2013 at 8:24 PM, William Buchanan
>> <william@williambuchanan.net> wrote:
>>> Step 1: Read FAQ
>>> Step 2: Identify where user-written programs come from (-search ivqreg, all- produces no results)
>>> Step 3: Identify which version of said program you are using
>>> Step 4: Show EXACTLY what you typed and EXACTLY what Stata provided for output
>>> Step 5: If you haven't received a response to your initial email exactly one day earlier, re-read the FAQ for advice on asking better questions
>>> Step 6: If all else fails, email the author of the program directly.
>>>
>>> After searching online for a little while, I was able to find 1 distribution of a package called -ivqreg- but have no ability to verify if it is the same program that you are using because you didn't include where you got the program.  The program I found had a date of 2010 in it, which might mean that the author is no longer developing that program.
>>>
>>> HTH,
>>> Billy
>>>
>>>
>>> On Apr 1, 2013, at 4:59 PM, Hossein Zare <hzare52@gmail.com> wrote:
>>>
>>>> I am working with ivqreg (ado file published by the STATA), I'd like
>>>> to insert a dummy for education (i.edu-0, 1, 2, 3) and some other
>>>> dummies.
>>>>
>>>> The problem is when I run this regression, it's working in first step
>>>> and create several _cons instead of one _cons.
>>>>
>>>> Is there any suggestion for treating this problem?
>>>>
>>>> Thank you, Hossein
>>>>
>>>> On Sat, Mar 30, 2013 at 9:08 PM, Hossein Zare <hzare52@gmail.com> wrote:
>>>>> Hello All,
>>>>>
>>>>> I am working with ivqreg (ado file published by the STATA), I'd like
>>>>> to insert a dummy for education (i.edu-0, 1, 2, 3) and some other
>>>>> dummies.
>>>>>
>>>>> The problem is when I run this regression, it's working in first step
>>>>> and create several _cons instead of one _cons.
>>>>>
>>>>> Is there any suggestion for treating this problem?
>>>>>
>>>>> Thank you, Hossein
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