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st: RE: Overid on ivprobit
From
"Schaffer, Mark E" <[email protected]>
To
<[email protected]>
Subject
st: RE: Overid on ivprobit
Date
Fri, 4 May 2012 01:21:51 +0100
-overid- doesn't (yet) support the i. operator, I'm afraid.
--Mark
> -----Original Message-----
> From: [email protected]
> [mailto:[email protected]] On Behalf Of
> Abekah Nkrumah
> Sent: 03 May 2012 23:59
> To: [email protected]
> 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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