# st: regression using dummy variables

 From Amy Jennings To Subject st: regression using dummy variables Date Thu, 3 Sep 2009 12:47:35 +0100

```
Hi,

I am new to STATA and am currently doing (trying) multiple regression using dummy coded categorical variables, I want to compare my coefficients so I can assess the relative strength of each predictor as I would in multiple regression with continuous predictors.  is it possible to get an overall coefficient for my dummy coded variables?

. regress  Group27_weight  highested_22 highested_23 highested_24 BMI_M2 BMI_M3, beta
Source |       SS       df       MS              Number of obs =    1602
-------------+------------------------------           F(  5,  1596) =    8.74
Model |  512485.705     5  102497.141           Prob> F      =  0.0000
Residual |  18722950.7  1596  11731.1721           R-squared     =  0.0266
Total |  19235436.4  1601  12014.6386           Root MSE      =  108.31
------------------------------------------------------------------------------
Group27_we~t |      Coef.   Std. Err.      t    P>|t|                     Beta
-------------+----------------------------------------------------------------
highested_22 |   24.77708   11.51337     2.15   0.032                 .1130292
highested_23 |   23.56448   12.14225     1.94   0.052                 .0935415
highested_24 |   62.28482   12.72192     4.90   0.000                 .2149551
BMI_M2 |  -9.841873   6.368431    -1.55   0.122                -.0395633
BMI_M3 |  -16.02685   7.922844    -2.02   0.043                -.0518379
_cons |   149.9236   11.31615    13.25   0.000                        .
------------------------------------------------------------------------------

e.g. is it possible to assess if highested_2 or BMI_M has the largest coefficient? or standardised coefficent?

kind regards
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