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Re: st: Programming Stata


From   natasha agarwal <agarwana2@googlemail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: Programming Stata
Date   Wed, 17 Aug 2011 14:52:46 +0100

In addition,

This is the summary statistics for lfp.dta in the zip file link



      id:  1, 2, ..., 5663                                   n =       5663
  period:  1, 2, ..., 5                                      T =          5
           Delta(period) = 1 unit
           Span(period)  = 5 periods
           (id*period uniquely identifies each observation)

Distribution of T_i:   min      5%     25%       50%       75%     95%     max
                         5       5       5         5         5       5       5

     Freq.  Percent    Cum. |  Pattern
 ---------------------------+---------
     5663    100.00  100.00 |  11111
 ---------------------------+---------
     5663    100.00         |  XXXXX

And below is the summary statistics for meap

On Wed, Aug 17, 2011 at 2:45 PM, natasha agarwal
<agarwana2@googlemail.com> wrote:
> Yes!
>
> Search for 'unbalanced' in the link below
>
> http://www.cemmap.ac.uk/resources/imbens_wooldridge/lecture_6.pdf
>
> Natasha
>
>
>
> On Wed, Aug 17, 2011 at 1:12 PM, Austin Nichols <austinnichols@gmail.com> wrote:
>> natasha agarwal <agarwana2@googlemail.com>
>> Seriously?
>> Search for "balanced" in the first link provided:
>> http://stata.com/meeting/chicago11/materials/chi11_wooldridge.pdf
>>
>> On Wed, Aug 17, 2011 at 5:57 AM, natasha agarwal
>> <agarwana2@googlemail.com> wrote:
>>> Hi Austin,
>>>
>>> You are absolutely right. This has got to do with Woolridge's APE stuff.
>>>
>>> I had a look at the links you posted (thanks for that) and it has got
>>> me a little confused.
>>>
>>> Is the APE calculation meant only for balanced panel (as his data is balanced)?
>>>
>>> Thanks
>>> Natasha
>>>
>>>
>>>
>>> On Tue, Aug 16, 2011 at 3:57 PM, Austin Nichols <austinnichols@gmail.com> wrote:
>>>> natasha agarwal <agarwana2@googlemail.com>:
>>>> I am guessing this is related to Wooldridge's APE stuff:
>>>> http://stata.com/meeting/chicago11/materials/chi11_wooldridge.pdf
>>>> http://ideas.repec.org/p/boc/nsug08/17.html
>>>> http://stata.com/meeting/snasug08/abstracts.html#wooldridge
>>>>
>>>> I have some programs from 2007 or 2008 to calculate the APE, but I
>>>> never released them, as I was working on a large-grain parallelized
>>>> bootstrap to speed up the SE calculations that I never finished.  I
>>>> guess I should revisit those programs, since there seems to be an
>>>> ongoing demand, but there is more than enough Stata code in
>>>> Wooldridge's presentations to help you write your own program for a
>>>> specific application.
>>>>
>>>> One thing--in your program below you put -xb- as an option to -gen-
>>>> when you mean -predict-.  Whenever you write a -program-, start by
>>>> running the commands interactively first, to debug your code.
>>>>
>>>> On Tue, Aug 16, 2011 at 10:17 AM, Nick Cox <n.j.cox@durham.ac.uk> wrote:
>>>>> In addition to Neil's comments,
>>>>>
>>>>> 1. There is no obvious gain from writing this as a program.
>>>>> You might as well just run these commands in a do-file. Of course, this may be under development.
>>>>>
>>>>> 2. The line
>>>>>
>>>>> xtprobit expdum 'x', re
>>>>>
>>>>> will not work as the same character ' is used for both delimiters. You need
>>>>>
>>>>> xtprobit expdum `x', re
>>>>>
>>>>> Nick
>>>>> n.j.cox@durham.ac.uk
>>>>>
>>>>> Neil Shephard
>>>>>
>>>>> If you are going to write it as a program then you should save it as
>>>>> [filename].ado (not [filename].do as you are implying) and place it in
>>>>> one of your systems -adopath-'s (to see what these are simply type
>>>>> -adopath- in Stata.
>>>>>
>>>>> See [U] 16-18 for greater details on "Do-Files" (Chapter 16)
>>>>> "Ado-Files (Chapter 17) and "Programming Stata (Chapter 18).
>>>>>
>>>>> On 16 August 2011 13:41, natasha agarwal <agarwana2@googlemail.com> wrote:
>>>>>
>>>>>> I am trying to write and run a program in Stata. The program I define
>>>>>> is as follows and I save it in the do-file
>>>>>>
>>>>>> capture program drop fdi
>>>>>> program fdi, rclass
>>>>>> local x " lnvfdi mfdi"
>>>>>> xtprobit expdum 'x', re
>>>>>> gen double x1b1hat, xb
>>>>>> gen double scale = normalden(x1bhat1)
>>>>>> gen double pe1=scale*_b[lnvfdi]
>>>>>> summarize pe1, meanonly
>>>>>> return scalar ape1=r(mean)
>>>>>> drop x1b1hat scale pe1
>>>>>> end
>>>>>>
>>>>>> When I type fdi, I get an error invalid file name.
>>>>>>
>>>>>> Can anyone please help me?
>>
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>>
>

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