David M. Drukker
This session serves as an introduction to Stata 12’s new
sem command for estimating the parameters of
simultaneous-equations models. Some of the considered models include
unobserved factors. Estimation methods include maximum likelihood and
generalized method of moments.
Materials
italy11_drukker.pdf
Giovanni L. Lo Magno
This session focuses on the new Stata 12 command,
mi impute chained,
to perform multivariate imputation using chained equations (ICE), also known
as sequential regression imputation. ICE is a flexible imputation technique
for imputing various types of data. The variable-by-variable specification
of ICE allows the user to impute variables of different types by choosing
the appropriate method for each variable from several univariate imputation
methods. Variables can have an arbitrary missingdata pattern. By specifying
a separate model for each variable, users are able to incorporate a number
of important characteristics, such as ranges and restrictions within a
subset, specific to each variable. Other new features in multiple imputation
in Stata 12 will also be discussed.
Materials
italy11_marchenko.pdf
The “Wishes and grumbles” session offers participants the
opportunity to highlight any problems or limitations of the software
for the members of StataCorp attending the meeting, and to suggest
possible improvements.
