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From |
"Laura R." <laura.roh@googlemail.com> |

To |
statalist@hsphsun2.harvard.edu |

Subject |
Re: st: how to fill some gross wage missings if I have the net wage |

Date |
Thu, 16 Dec 2010 14:25:56 +0100 |

Dear Maarten, thank you very much. I had just done a scatterplot with both imputed and not imputed values and the result is as you said - they are all on the regression line. I also found an example of -mi- with panel data on the internet, but the missings to be imputed where from a variable that does not change over time (sex), while gross wage can change over time. Second, I am using the Stata version 10.1. Would -ice- work for panel data aswell and if so, how? Thanks for any suggestions. Laura 2010/12/16 Maarten buis <maartenbuis@yahoo.co.uk>: > --- On Thu, 16/12/10, Laura R. wrote: >> I came up with the following solution: just make a >> regression on gross wage with several independent >> variables with the cases that report gross wage, and >> then calculate the gross wage for the others using the >> b coefficients and the independent variables. Would that >> work as well? > > No, if you want to do imputation you'll have to do it > right, i.e. do multiple imputation. What you propose would > put all imputed observations on the regression line, i.e. > you would overestimate the correlations and all subsequent > statistics that depend on them. Moreover you are treating > your imputations as real observations rather than results > from a model. To do this right you must also take the > imputation model uncertainty into account. > > In Stata 11.1 you can use panel data (-xt-) models with > -mi estimate-, so the presence of panel data is not a > reason to forgo multiple imputation. > > Hope this helps, > Maarten > > -------------------------- > Maarten L. Buis > Institut fuer Soziologie > Universitaet Tuebingen > Wilhelmstrasse 36 > 72074 Tuebingen > Germany > > http://www.maartenbuis.nl > -------------------------- > > > > > > * > * For searches and help try: > * http://www.stata.com/help.cgi?search > * http://www.stata.com/support/statalist/faq > * http://www.ats.ucla.edu/stat/stata/ > * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/

**Follow-Ups**:**Re: st: how to fill some gross wage missings if I have the net wage***From:*Maarten buis <maartenbuis@yahoo.co.uk>

**References**:**Re: st: how to fill some gross wage missings if I have the net wage***From:*"Laura R." <laura.roh@googlemail.com>

**Re: st: how to fill some gross wage missings if I have the net wage***From:*Maarten buis <maartenbuis@yahoo.co.uk>

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