Hi everyone, I am trying just to see the impact of "policy" on the cost of KW ("cost_kw"). I would need to OLS regression. Is the code correct? and Can anyone just help to interpret the coefficient?

Code:
   

#delimit;
regress cost_KW policy other_rebates pop median_age unemployment  
;


Source |       SS           df       MS      Number of obs   =       452
-------------+----------------------------------   F(23, 428)      =     12.42
       Model |  .084621209        23  .003679183   Prob > F        =    0.0000
    Residual |  .126826328       428  .000296323   R-squared       =    0.4002
-------------+----------------------------------   Adj R-squared   =    0.3680
       Total |  .211447537       451  .000468842   Root MSE        =    .01721

-----------------------------------------------------------------------------------------
                cost_KW |      Coef.   Std. Err.      t    P>|t|     [95% Conf. Interval]
------------------------+----------------------------------------------------------------
                   policy|   .0135504   .0022828     5.94   0.000     .0090635    .0180372
          other_rebates |  -1.31e-08   6.09e-09    -2.15   0.032    -2.51e-08   -1.13e-09
                    pop |   6.18e-09   3.98e-09     1.55   0.121    -1.64e-09    1.40e-08
             median_age |   .0000222    .000285     0.08   0.938     -.000538    .0005825
           unemployment |  -.0012747   .0003196    -3.99   0.000     -.001903   -.0006465
           
-----------------------------------------------------------------------------------------

Best