|From||May Boggess <email@example.com>|
|Subject||Re: st: Stata's pseudo R-squared for oprobit|
|Date||Wed, 12 Oct 2005 13:51:24 -0500|
The formula used is used with many Stata estimation commands.I have not been able to find a definition of the particular pseudo R-squared that Stata reports with the results of an oprobit regression in either the manuals or in the list archives. As I understand, there are many pseudo R-squareds around. Can someone please tell me whether the one Stata reports is Maddala's (1983) or Zavoina and McKelvey's (1975) or something else?