Dear Sarah,
Thank you for your help. I used your stata code and it computed QIC. Anyway,
I also did as Richard said and updated stata. Afterwards I ran QIC (using
James Cui program) and it also computed QIC (no more "p ambiguous
abbreviation"). So, my problem is solved.
Thank you for your help!
**************************
Lara Noronha Ferreira
University of the Algarve
Portugal
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