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# Re: st: dummy variable for panel cointegration

 From varuna dreepaul To statalist@hsphsun2.harvard.edu Subject Re: st: dummy variable for panel cointegration Date Sun, 24 Jun 2012 20:32:42 +0400

```Thank you for your response. I have used the following commands.
To specify the dummy variable.
Developing countries: 0
Developed countries: 1

. tabulate dummy, generate (dum)

dummy |      Freq.     Percent        Cum.
------------+-----------------------------------
0 |        667       50.00       50.00
1 |        667       50.00      100.00
------------+-----------------------------------
Total |      1,334      100.00

Then i ran the regression with fixed effect, but the dummies have dropped
xtreg  carbon gdp squaregdp gs trade fdi  energy polity dum1 dum2, fe

Fixed-effects (within) regression               Number of obs      =       950
Group variable: countries                       Number of groups   =        44

R-sq:  within  = 0.4664                         Obs per group: min =         2
between = 0.8431                                        avg =      21.6
overall = 0.8786                                        max =        27

F(6,900)           =    131.09
corr(u_i, Xb)  = 0.7548                         Prob > F           =    0.0000

------------------------------------------------------------------------------
carbon |      Coef.   Std. Err.      t    P>|t|     [95% Conf. Interval]
-------------+----------------------------------------------------------------
gdp |  (dropped)
squaregdp |  -.1840739   .0221407    -8.31   0.000    -.2275273   -.1406205
gs |   .1325515   .0386822     3.43   0.001     .0566337    .2084693
trade |   .1630736   .0301755     5.40   0.000      .103851    .2222961
fdi |   .0068717   .0051202     1.34   0.180    -.0031772    .0169205
energy |   .8923361   .0518257    17.22   0.000     .7906228    .9940494
polity |  -.0247151   .0254183    -0.97   0.331    -.0746011     .025171
dum1 |  (dropped)
dum2 |  (dropped)
_cons |   6.022789   .2686363    22.42   0.000     5.495562    6.550015
-------------+----------------------------------------------------------------
sigma_u |  .85699844
sigma_e |  .14137961

On 6/24/12, Ronnie Babigumira <rb.glists@gmail.com> wrote:
> Always helps to "tell and show" what you did
> http://www.stata.com/support/faqs/resources/statalist-faq/#question
>
> 3.3 Stata references in your question
> 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.
>
> Anyway, here is an example using the auto data and as you can see, it works
> as expected.
>
> sysuse auto
> tab for, gen(source)
> l foreign source1 source2 in 50/55, nolabel
>
>
>
> --
> 010100100110111101101110011011100110100101100101
>
>
>
>
> On Sunday, June 24, 2012 at 6:15 PM, varuna dreepaul wrote:
>
>> Dear all,
>>
>> I have 2 set of countries developed and developing countries. I wish
>> to run a panel co-integration regression in which i want to use dummy
>> variable for the developed or developing countries.
>>
>> I have used tabulate and generate function, but it says unrecognized.
>>
>> Can anybody please help me.....for the commands.
>>
>> Thanking you,
>> Varuna
>> *
>> * For searches and help try:
>> * http://www.stata.com/help.cgi?search
>> * http://www.stata.com/support/statalist/faq
>> * http://www.ats.ucla.edu/stat/stata/
>
>
>
> *
> *   For searches and help try:
> *   http://www.stata.com/help.cgi?search
> *   http://www.stata.com/support/statalist/faq
> *   http://www.ats.ucla.edu/stat/stata/
>
*
*   For searches and help try:
*   http://www.stata.com/help.cgi?search
*   http://www.stata.com/support/statalist/faq
*   http://www.ats.ucla.edu/stat/stata/
```

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