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st: CQREG CLAD


From   "Paul GERRANS" <p.gerrans@ecu.edu.au>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: CQREG CLAD
Date   Fri, 8 Sep 2006 09:35:09 +0800

Hello,
I am using Professor Ken Chay's censored regression programs (cqreg and scls) available from his website http://elsa.berkeley.edu/~kenchay/
Two questions:
- While I can run Tobit and SCLS and get estimates most samples where I run cqreg i get "No covergence" after some considerable time. I have approx 4800 left-censored observations (0), 11200 uncensored observations and 1870 right-censored (100)
- When I do get output for the cqreg and scls estimators what is the interpretation of the Bias output? Do I add/subtract from the coefficient estimate?
 
I have tried using the Jolliffe CLAD estimator but that only allow lower or upper censoring but not both. If anybody has modified this to allow both censoring I would be interested in using that as well.
 
Many thanks
Paul
__________________________________________________
Dr Paul Gerrans
Senior Lecturer
School of Accounting, Finance and Economics
Edith Cowan University
100 Joondalup Drive
Joondalup, Western Australia 6027
61 8 63045605 Ph
61 8 63045633 Fax
p.gerrans@ecu.edu.au

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