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RE: st: RE: re: 3sls and fixed effects
From
"Biljana Dlab" <[email protected]>
To
<[email protected]>
Subject
RE: st: RE: re: 3sls and fixed effects
Date
Sat, 16 Oct 2010 19:27:52 +0200
That example works for me as well.
Have stata 10.
I have some lagged values in regression - could that be the problem?
This is what I have & get:
. xi: reg3 (DeltaDebt CashFlow dQ size DeltaCashHold debt_lag1 i.gvkey_n
i.fyear) (DeltaCashHold CashFlow dQ size DeltaDebt cashhold_lag2
i.gvkey_n i.fyear), endog(DeltaDebt DeltaCashHold)
i.gvkey_n _Igvkey_n_1017-103307(naturally coded; _Igvkey_n_1017
omitted)
i.fyear _Ifyear_1971-2001 (naturally coded; _Ifyear_1971
omitted)
1st stage failure.
Equation: DeltaDebt CashFlow dQ size debt_lag1 _Igvkey_n_1056
_Igvkey_n_1058 _Igvkey_n_1093 _Igvkey_n_1124 _Igvkey_n_1234
_Igvkey_n_1248 _Igvkey_n_1283 _Igvkey_n_1284 _Igvkey_n_1327
_Igvkey_n_1350 _I
(...)
Best,
Biljana
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Clive
Nicholas
Sent: 16 October 2010 19:16
To: [email protected]
Subject: Re: st: RE: re: 3sls and fixed effects
Biljana Dlab wrote:
> I tried as you suggested but then i get message:
>
> "Equation is not identified -- does not meet order conditions"
>
> Any idea what could be the problem.
I'll hapilly tell you what the main problem is: it's that you're not
following the solutions provided by John and Kit properly:
. webuse grunfeld
. xi: reg3 (invest mvalue kstock i.company) (kstock time i.company),
endog(invest kstock)
i.company _Icompany_1-10 (naturally coded; _Icompany_1
omitted)
Three-stage least-squares regression
----------------------------------------------------------------------
Equation Obs Parms RMSE "R-sq" chi2 P
----------------------------------------------------------------------
invest 200 11 52.79183 0.9404 2882.99 0.0000
kstock 200 10 173.8865 0.6648 396.70 0.0000
----------------------------------------------------------------------
------------------------------------------------------------------------
------
| Coef. Std. Err. z P>|z| [95% Conf.
Interval]
-------------+----------------------------------------------------------
------
invest |
mvalue | .1106015 .0124791 8.86 0.000 .0861429
.1350602
kstock | .253693 .0275762 9.20 0.000 .1996447
.3077413
_Icompany_2 | 153.3988 30.54439 5.02 0.000 93.53285
213.2646
_Icompany_3 | -178.128 31.5856 -5.64 0.000 -240.0347
-116.2214
_Icompany_4 | 14.50765 42.87785 0.34 0.735 -69.53139
98.54668
_Icompany_5 | -51.47406 51.71217 -1.00 0.320 -152.8281
49.87992
_Icompany_6 | 18.33015 45.77218 0.40 0.689 -71.38167
108.042
_Icompany_7 | -13.05761 50.69623 -0.26 0.797 -112.4204
86.30517
_Icompany_8 | -17.2252 42.89694 -0.40 0.688 -101.3017
66.85125
_Icompany_9 | -34.7751 48.39492 -0.72 0.472 -129.6274
60.07719
_Icompany_10 | 29.54644 48.99071 0.60 0.546 -66.4736
125.5665
_cons | -35.81323 48.30395 -0.74 0.458 -130.4872
58.86077
-------------+----------------------------------------------------------
------
kstock |
time | 26.65492 2.132334 12.50 0.000 22.47563
30.83422
_Icompany_2 | -353.58 54.98775 -6.43 0.000 -461.354
-245.806
_Icompany_3 | -248.275 54.98775 -4.52 0.000 -356.049
-140.501
_Icompany_4 | -527.19 54.98775 -9.59 0.000 -634.964
-419.416
_Icompany_5 | -161.67 54.98775 -2.94 0.003 -269.444
-53.89599
_Icompany_6 | -544.15 54.98775 -9.90 0.000 -651.924
-436.376
_Icompany_7 | -333.49 54.98775 -6.06 0.000 -441.264
-225.716
_Icompany_8 | -562.795 54.98775 -10.23 0.000 -670.569
-455.021
_Icompany_9 | -350.535 54.98775 -6.37 0.000 -458.309
-242.761
_Icompany_10 | -642.4935 54.98775 -11.68 0.000 -750.2675
-534.7195
_cons | 368.5583 44.86776 8.21 0.000 280.6191
456.4975
------------------------------------------------------------------------
------
Endogenous variables: invest kstock
Exogenous variables: mvalue _Icompany_2 _Icompany_3 _Icompany_4
_Icompany_5
_Icompany_6 _Icompany_7 _Icompany_8 _Icompany_9 _Icompany_10 time
------------------------------------------------------------------------
------
This ran perfectly on my Stata 9.2.
--
Clive Nicholas
[Please DO NOT mail me personally here, but at
<[email protected]>. Please respond to contributions I make in
a list thread here. Thanks!]
"My colleagues in the social sciences talk a great deal about
methodology. I prefer to call it style." -- Freeman J. Dyson.
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