Dear all,
I would like to use instrument2 as an instrument for sp_city_10t.
I estimate the following regression and the regression table includes all the year and other fixed effects as additional instruments for sp_city even though I only specify instrument2.
What might be the reason?
ivregress 2sls `var' i.year i.il_kodu (sp_city_10t=instrument2) , robust
Instrumental variables (2SLS) regression Number of obs = 247799
Wald chi2(90) =10271.28
Prob > chi2 = 0.0000
R-squared = 0.0151
Root MSE = .08672
------------------------------------------------------------------------------
| Robust
relsales | Coef. Std. Err. z P>|z| [95% Conf. Interval]
-------------+----------------------------------------------------------------
sp_city_10t | -.0000711 .0000434 -1.64 0.102 -.0001562 .0000141
|
year |
2007 | .001895 .0009753 1.94 0.052 -.0000165 .0038064
2008 | -.000938 .0009446 -0.99 0.321 -.0027894 .0009134
2009 | .0075193 .0010504 7.16 0.000 .0054605 .0095781
2010 | -.0008531 .0009168 -0.93 0.352 -.00265 .0009438
2011 | -.0078511 .0008569 -9.16 0.000 -.0095307 -.0061715
2012 | -.0101156 .0008275 -12.22 0.000 -.0117376 -.0084937
2013 | -.0128642 .0008114 -15.85 0.000 -.0144545 -.0112739
2014 | -.0109149 .0010367 -10.53 0.000 -.0129468 -.0088831
2015 | -.0115138 .0011046 -10.42 0.000 -.0136789 -.0093487
|
il_kodu |
2 | -.0130217 .0027672 -4.71 0.000 -.0184453 -.0075981
81 | .0042069 .0035961 1.17 0.242 -.0028413 .0112551
|
_cons | .0451145 .0013347 33.80 0.000 .0424985 .0477304
------------------------------------------------------------------------------
Instrumented: sp_city_10t
Instruments: 2007.year 2008.year 2009.year 2010.year 2011.year 2012.year
2013.year 2014.year 2015.year 2.il_kodu 3.il_kodu 4.il_kodu
5.il_kodu 6.il_kodu 7.il_kodu 8.il_kodu 9.il_kodu 10.il_kodu
11.il_kodu 12.il_kodu 13.il_kodu 14.il_kodu 15.il_kodu
16.il_kodu 17.il_kodu 18.il_kodu 19.il_kodu 20.il_kodu
21.il_kodu 22.il_kodu 23.il_kodu 24.il_kodu 25.il_kodu
26.il_kodu 27.il_kodu 28.il_kodu 29.il_kodu 30.il_kodu
31.il_kodu 32.il_kodu 33.il_kodu 34.il_kodu 35.il_kodu
36.il_kodu 37.il_kodu 38.il_kodu 39.il_kodu 40.il_kodu
41.il_kodu 42.il_kodu 43.il_kodu 44.il_kodu 45.il_kodu
46.il_kodu 47.il_kodu 48.il_kodu 49.il_kodu 50.il_kodu
51.il_kodu 52.il_kodu 53.il_kodu 54.il_kodu 55.il_kodu
56.il_kodu 57.il_kodu 58.il_kodu 59.il_kodu 60.il_kodu
61.il_kodu 62.il_kodu 63.il_kodu 64.il_kodu 65.il_kodu
66.il_kodu 67.il_kodu 68.il_kodu 69.il_kodu 70.il_kodu
71.il_kodu 72.il_kodu 73.il_kodu 74.il_kodu 75.il_kodu
76.il_kodu 77.il_kodu 78.il_kodu 79.il_kodu 80.il_kodu
81.il_kodu instrument2
relsales_iv.xls
dir : seeout
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