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Re: st: RE: Overid on ivprobit


From   Abekah Nkrumah <ankrumah@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: RE: Overid on ivprobit
Date   Fri, 4 May 2012 09:53:20 +0100

Thank you very much Mark for the information.

Regards

On Fri, May 4, 2012 at 1:21 AM, Schaffer, Mark E <M.E.Schaffer@hw.ac.uk> wrote:
> -overid- doesn't (yet) support the i. operator, I'm afraid.
>
> --Mark
>
>> -----Original Message-----
>> From: owner-statalist@hsphsun2.harvard.edu
>> [mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of
>> Abekah Nkrumah
>> Sent: 03 May 2012 23:59
>> To: statalist@hsphsun2.harvard.edu
>> Subject: st: Overid on ivprobit
>>
>> Dear All,
>>
>> I am trying to use overid after ivprobit but stata returns an
>> error message. I have checked several times and seem not to
>> know what is happening. Can some one help. The results is below
>>
>>  ivprobit place_deliv  woman_age_yrs woman_age_yrssq
>> i.birth_order2 age_at_1st_birth i.moda_edu12 (empowerment12=
>> age_polig clusta_death_dif
>> > f) if year==2003, twostep
>> Checking reduced-form model...
>>
>> Two-step probit with endogenous regressors        Number of
>> obs   =      2437
>>                                                   Wald
>> chi2(8)    =    329.42
>>                                                   Prob > chi2
>>     =    0.0000
>>
>> --------------------------------------------------------------
>> ----------------
>>              |      Coef.   Std. Err.      z    P>|z|
>> [95% Conf. Interval]
>> -------------+------------------------------------------------
>> ----------
>> -------------+------
>> empowerme~12 |   5.378231   1.129086     4.76   0.000
>> 3.165263    7.591199
>> woman_age_~s |   .1238111   .0532797     2.32   0.020
>> .0193848    .2282374
>> woman_age_~q |   -.001565   .0007225    -2.17   0.030
>> -.002981    -.000149
>>              |
>> birth_order2 |
>>           2  |  -.5072639   .1132554    -4.48   0.000
>> -.7292403   -.2852875
>>           3  |   -.764831   .1393952    -5.49   0.000
>> -1.038041   -.4916214
>>           4  |  -1.025213   .1708814    -6.00   0.000
>> -1.360135    -.690292
>>              |
>> age_at_1st~h |  -.0200801   .0114204    -1.76   0.079
>> -.0424637    .0023036
>> 1.moda_edu12 |    .288899   .1405919     2.05   0.040
>> .013344     .564454
>>        _cons |  -4.307615    .606373    -7.10   0.000
>> -5.496084   -3.119146
>> --------------------------------------------------------------
>> ----------------
>> Instrumented:  empowerment12
>> Instruments:   woman_age_yrs woman_age_yrssq 2.birth_order2
>> 3.birth_order2
>>                4.birth_order2 age_at_1st_birth 1.moda_edu12 age_polig
>>                clusta_death_diff
>> --------------------------------------------------------------
>> ----------------
>> Wald test of exogeneity:     chi2(1) =    15.90
>> Prob > chi2 = 0.0001
>>
>> . overid
>>
>> 1b:  operator invalid
>> r(198);
>>
>>
>>
>> Gordon
>> *
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>>
>
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