Dear Dr. King I am sorry to bother you again, but I
have one more
question on AMELIA: In my model I am going to use both "level" variables
and change over time. SHould I use amelia on a dataset that only has the
level variables ot should I also include the change variables (in this
case, I have the ln of all variables, and change over time is simply
measured as t- t-1). Thanks Diogo L. Pinheiro
Quoting Gary King <king(a)harvard.edu>du>:
On Tue, 22 Oct 2002, Diogo Lemieszek Pinheiro
wrote:
Dear Dr. King,
First of all, let me thank you for creating AMELIA and distributing it
free. It
is an excelent software.
I got a few questions, sorry if they seem trivial:
1- When combining the results from the m datasets generated by Amelia,
how can I obtain the R squared and other "goodness of fit" indicators?
the same way you combine any of the other quantities of interest.
2- Should MI only be used for independent
variables or t doesnt matter?
you should use all your variables, x and y. it matters.
3- Using clarify, do I have to use the estsimp
command for every model I
am runnign from the imputed datasets? Using setx eliminate the need to
do that? If so, everytime I run stata again I have to use the estsimp
and then setx commands or is there a way to save it all?
you can run amelia once and then do as many analysis models using the
same imputed data sets.
Gary King
: Gary King, King(a)Harvard.Edu
http://GKing.Harvard.Edu :
: Center for Basic Research Direct (617) 495-2027 :
: in the Social Sciences Assistant (617) 495-9271 :
: 34 Kirkland Street, Rm. 2 HU-MIT DC (617) 495-4734 :
: Harvard U, Cambridge, MA 02138 eFax (928) 832-7022 :
Once again, I am sorry if the answer to those
questions is obvious. I am
just
starting to learn about MI...
Thanks in advance
Diogo L. Pinheiro
Graduate Student
Dept of SOciology
EMory University