st: Missing F-Statistics in estimation results, why?

["Ada Ma" <heu034@googlemail.com>]

I have estimated some equations both with and without weights, and
while the unweighted version gives the F-Statistics at the top of the
results, the weighted version doesn't (it shows a ".").

I have done some searches on why this is the case and so far found
nothing.  I meant to read the [svy] Survey Data but I still haven't
got around to it (sorry - computer runs estimations much faster than I
can read books).  It'd be great if someone can point me to the
resources or an explanation.  If the answer can be found in the [svy]
book please tell me too!

Many thanks for the bandwidth!

Regards,
Ada


--
Ada Ma
Research Fellow
Health Economics Research Unit
University of Aberdeen, UK.
http://www.abdn.ac.uk/heru/
Tel: +44 (0) 1224 553863
Fax: +44 (0) 1224 550926

*
*   For searches and help try:
*   http://www.stata.com/support/faqs/res/findit.html
*   http://www.stata.com/support/statalist/faq
*   http://www.ats.ucla.edu/stat/stata/