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# st: Interpreting Coefficient of a count independent variable

 From Muhammad Anees To statalist@hsphsun2.harvard.edu Subject st: Interpreting Coefficient of a count independent variable Date Mon, 16 Apr 2012 10:24:38 +0500

```Hello,

I am using Stata 12 on a PC with Windows 7.

I am trying to figure out how smoking affects earnings contradictory
to the normal routine of studying the affects of earnings on smoking
in my previous studies.
I have run the following result and I want to know the possible
interpretational issues with a count independent variables.

. reg netpay ncigs

Source |       SS       df       MS              Number of obs =    4426
-------------+------------------------------           F(  1,  4424) =   24.20
Model |  .191031444     1  .191031444           Prob > F      =  0.0000
Residual |  34.9166766  4424  .007892558           R-squared     =  0.0054
-------------+------------------------------           Adj R-squared =  0.0052
Total |   35.107708  4425  .007933945           Root MSE      =  .08884

------------------------------------------------------------------------------
netpay |      Coef.   Std. Err.      t    P>|t|     [95% Conf. Interval]
-------------+----------------------------------------------------------------
ncigs |  -.0006905   .0001404    -4.92   0.000    -.0009657   -.0004154
_cons |   .1397744   .0014313    97.65   0.000     .1369682    .1425805
------------------------------------------------------------------------------

Wish to thank you too much in advance.
--

Best
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