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  • #16
    Victor:
    as per your low R.sq within and most of your predictors showing wide 95% Cis I wonder whether your model is correctly specified.
    I would first investigate whether -fe- specification is the right one for your regression model. As you invoked non-default standard errors, -hausman- is out of debate there. You should rely on the glorious community-contributed command -xtoverid- which, in turn, being a bit old-fashioned, does not support -fvvarlist- notation. The usual fix is to prefix your -xtreg- code with -xi:-. If -xi:- does not do the trick, you should calculate interaction by hand (provided it makes sense to keep them).
    Kind regards,
    Carlo
    (Stata 18.0 SE)

    Comment


    • #17
      Code:
       Model VCE    : Robust
      
      Expression   : Linear prediction, predict()
      dy/dx w.r.t. : lnta nim roaa assetg llrtgl depositg lev gdpg LCRpolicy
      
      ------------------------------------------------------------------------------
                   |            Delta-method
                   |      dy/dx   Std. Err.      z    P>|z|     [95% Conf. Interval]
      -------------+----------------------------------------------------------------
      lnta         |
          emerging |
                0  |   .1985668   .2830566     0.70   0.483    -.3562139    .7533476
                1  |  -.1321813    .112635    -1.17   0.241    -.3529418    .0885792
      -------------+----------------------------------------------------------------
      nim          |
          emerging |
                0  |   .6450914    8.00381     0.08   0.936    -15.04209    16.33227
                1  |    .623683   6.878041     0.09   0.928    -12.85703     14.1044
      -------------+----------------------------------------------------------------
      roaa         |
          emerging |
                0  |   1.412726   1.977242     0.71   0.475    -2.462598     5.28805
                1  |  -4.543483   10.50964    -0.43   0.666      -25.142    16.05503
      -------------+----------------------------------------------------------------
      assetg       |
          emerging |
                0  |    .302561   .2780425     1.09   0.277    -.2423924    .8475144
                1  |  -.1158953   .2252908    -0.51   0.607    -.5574571    .3256665
      -------------+----------------------------------------------------------------
      llrtgl       |
          emerging |
                0  |   .3434655   .0809187     4.24   0.000     .1848678    .5020633
                1  |  -.3583853   1.031057    -0.35   0.728    -2.379219    1.662449
      -------------+----------------------------------------------------------------
      depositg     |
          emerging |
                0  |  -.1121131   .0264255    -4.24   0.000    -.1639062   -.0603201
                1  |    .139336   .2030365     0.69   0.493    -.2586082    .5372802
      -------------+----------------------------------------------------------------
      lev          |
          emerging |
                0  |    3.14852   1.674282     1.88   0.060    -.1330114    6.430052
                1  |   .3645413   .3024783     1.21   0.228    -.2283052    .9573879
      -------------+----------------------------------------------------------------
      gdpg         |
          emerging |
                0  |  -.0798069   .2180151    -0.37   0.714    -.5071087    .3474948
                1  |   4.558842   2.357175     1.93   0.053    -.0611364     9.17882
      -------------+----------------------------------------------------------------
      LCRpolicy    |
          emerging |
                0  |  -.0793828   .2034763    -0.39   0.696     -.478189    .3194233
                1  |  -.0793828   .2034763    -0.39   0.696     -.478189    .3194233
      ------------------------------------------------------------------------------
      These are the results; What do you think? Thank you again it's been invaluable for me. (Ignore LCRpolicy I know what this is about)

      Comment


      • #18
        Why is Hausman out for debate? The Hausman test said rejected the null; ie FE to be used.
        The robust is just to control for heterscedasticity after the FE test was used. Im trying to not overcomplicate things.

        Thanks

        Comment


        • #19
          Victor:
          if you try running yourself -hausman- with non-default standard errors, your try will be unsuccessful:
          Code:
          . use "http://www.stata-press.com/data/r15/nlswork.dta"
          (National Longitudinal Survey.  Young Women 14-26 years of age in 1968)
          
          . quietly xtreg ln_wage age, fe vce(cluster idcode)
          
          . estimates store fe
          
          . quietly xtreg ln_wage age, re vce(cluster idcode)
          
          . estimates store re
          
          . hausman fe re
          hausman cannot be used with vce(robust), vce(cluster cvar), or p-weighted data
          r(198);
          
          .
          That said, performing -hausman- with default standard errors and then change them after -hausman- outcome, is methodologically wrong.
          As previously replied, the community-contributed command -xtoverid- can do the trick (and, in this case, points the researcher to -fe- specification):
          Code:
          . xtoverid
          
          Test of overidentifying restrictions: fixed vs random effects
          Cross-section time-series model: xtreg re  robust cluster(idcode)
          Sargan-Hansen statistic  14.529  Chi-sq(1)    P-value = 0.0001
          Unfortunately, -xtoverid- being glorious but a bit old-fashioned, does no support -fvvarlist- notation.
          The usual fix is to prefix your -xtreg- code with -xi:-. If -xi:- does not do the trick, you should calculate interaction by hand (provided it makes sense to keep them).
          Kind regards,
          Carlo
          (Stata 18.0 SE)

          Comment

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