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st: Stata 11.1 available


From   wgould@stata.com (William Gould, StataCorp LP)
To   statalist@hsphsun2.harvard.edu
Subject   st: Stata 11.1 available
Date   Thu, 03 Jun 2010 13:54:48 -0500

Stata 11.1 is now available.  It's free.  If you have Stata 11, type
-update query- and follow the instructions.

Usually we would stop right there, but this update is nearly an
upgrade.  Highlights include,

    o Multiple imputation (-mi-) now supports fitting panel-data and
      multilevel models.

    o Truncated count-data models.  New commands -tpoisson- and -tnbreg-
      fit fit models of count-data outcomes with any form of left
      truncation, including truncation that varies observation by
      observation.

    o Mixed models.  Linear mixed (multilevel) models allow more
      covariance structures for the residuals, including exponential,
      banded, and Toeplitz.

     o Probability predictions.  -predict- after count-data models, such
       as -poisson- and -nbreg-, can now predict the probability of
       particular counts or range of counts.

    o Survey bootstrap.  Estimation commands can now estimate survey
      bootstrap standard errors (SEs) using user-supplied bootstrap
      replicate weights.

    o Survey SDR weights.  Successive difference replicate (SDR) weights
      are now supported when estimating with survey data.  These weights
      are supplied with many datasets from the U.S. Census Bureau.

    o Concordance.  -estat concordance- adds a new measure of concordance,
      Gonen and Heller's K, that is robust in the presence of censoring.

    o Survey GOF.  Goodness-of-fit tests are now available after -probit
      and -logitistic- estimates on survey data.

    o Robust SEs.  Cluster-robust SEs have been added to -xtpoisson, fe-.  

    o Survey CV.  The coefficient of variation (CV) is now available
      after estimation with survey data. 

    o Estimation output formatting.  Numerical formats can now be
      customized on regression results.  You can set the number of
      decimal places for coefficients, SEs, p-values, and confidence
      intervals using either command-line options or the -set-
      command.

      Settings have also been added to control the display of factor
      variables in estimation tables.  These display settings include
      display of empty cells, display of base levels, and omitting
      variables excluded because of collinearity.

    o Stata/MP performance. Stata/MP has several performance
      improvements:  many panel-data estimators are even more
      parallelized, improved parallelization of estimations with more
      than 200 covariates, and improved tuning of MP on large numbers
      of processors/cores.

    o Clipboard improvements.  Clipboard support in the Data Editor
      has been enhanced.  Copies to the Clipboard now retain variable
      formats and other characteristics of the data when pasting
      within Stata.

    o Windows XP.  The amount of memory available to Stata has been
      increased on 32-bit Windows XP.

    o Do-file Editor.  Syntax highlighting, bookmarks, and other
      Do-file Editor features have been added to Stata for Mac.

    o ODBC.  ODBC support has been added for Oracle Solaris (Sun
      Solaris).

    o Dialog boxes.  Dialog boxes on Unix now have varlist controls
      that allow you to select variables from a list of variables in
      your dataset.

Type -update query- to download and install the update.

-- Bill
wgould@stata.com
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