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# st: Regression output: Nwest and Probit

 From Daniel Park <[email protected]> To [email protected] Subject st: Regression output: Nwest and Probit Date Mon, 17 Jun 2013 11:42:03 +0200

```Hello everyone,

before I start I ll apologize for any noob-ish questions. I previously
worked with Eviews for my master thesis until I had to realize that
the things I need to do can't be done with Eviews.

So since yesterday I have been trying to teach myself some STATA.
For my thesis, I am performing forecasts using a probit model. Due to
the overlapping nature of the forecasts, I would like to correct the
serial correlation of the errors by using Newey-West techinique.
Delta is one quarter and I want to do predictions 1 to 8 quarters ahead.

What I got so far:

tsset date
time variable:  date, 1900q1 to 2013q1
delta:  1 quarter

nwest probit dependentvar independentvar, lag(X) t(date)

first annoying thing is that the lag operator "L" doesn't work with
nwest, or at least i am too stupid to do so. Is there any way except
creating new time series with manually lagged independent variables?
If i use "probit" only, the lag operator works perfectly fine.

Also, i set X equal the lag of the independent variable minus 1 (so if
the independent variable has a lag of two quarters I set X equal 1). I
thought that for one quarter ahead I don't yet need to correct for
serial correlation,or am I mistaken?

My question is concerning the output that nwest delivers. Eviews
outputs a nice table with all sorts of information for any sort of
regression (problem with Eviews was that there is no function to
calculate robust SE based on Newey West for probit models). However,
the nwest command only outputs

Regression with Newey-West standard errors
maximum lag : 0
Number of obs  = 251
F(  1,   249) = 13.13
Prob > F = 0.0004

------------------------------------------------------------------------------
|                      Robust
ptinrec |      Coef.         Std. Err.       t      P>|t|
[95% Conf. Interval]
-------------+----------------------------------------------------------------
dlog_djind |  -1.888772   .5211739     -3.62   0.000      -2.915243
-.8623005
_cons |    .218619     .0268878     8.13    0.000     .1656625
.2715755
------------------------------------------------------------------------------

If it comes out distorted, its basically just the coefficients with
the robust SE and the t-statistics together with probability and 95%
confidence interval.

Is there any option to extend this table automatically to include
basic regression output like R-squared, adjust R-squared, the SE of
the regression, values of the log likelihood etc?