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st: Update to -rrlogit- on SSC


From   "Ben Jann" <ben.jann@soz.gess.ethz.ch>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: Update to -rrlogit- on SSC
Date   Mon, 2 Jan 2006 11:51:47 +0100

Thanks to Kit Baum, an update to the -rrlogit- package is
available from the SSC archive. To install the update, 
type 

 . ssc install rrlogit, replace

-rrlogit- fits logistic regression for randomized response data.

Major changes:

o Individually varying probabilities of unconditional answers
  can now be taken into account. 

o I accidentally omitted a constant term in the log likelihood
  function. This had no implications for the estimated 
  coefficients, but the reported log likelihood values were 
  wrong. This is fixed.

o The baseline (constant only) model was estimated incorrectly. 
  Thus, a wrong value for the overall Chi2-Test was reported. 
  This is fixed.

ben


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