F stats Missing when robust command used

[ansar majeed]

dear fellows!! I am facing a problem when I run my regression with robust command "F-stats" and "Prob > F" are displayed as missing. what is reason and remedy for that????

[Carlo Lazzaro]

Ansar:
you may find this thread http://www.stata.com/statalist/archi.../msg00001.html helpful.

[ansar majeed]

thank u so much.... Mr. Carlo