Di Stefano, Paola writes:
> Dear Joan,
>
> Did you check if one variables is linear combination of another?
> It could happen when a variable is created using the others.....
>
> Paola
Good thinking: as I said the linear combination that comes up for me
most often is 0.
Joel
--
Joel J. Adamson
Biostatistician
Pediatric Psychopharmacology Research Unit
Massachusetts General Hospital
Boston, MA 02114
(617) 643-1432
(303) 880-3109
THE INFORMATION TRANSMITTED IN THIS ELECTRONIC COMMUNICATION IS INTENDED ONLY FOR THE PERSON OR ENTITY TO WHOM IT IS ADDRESSED AND MAY CONTAIN CONFIDENTIAL AND/OR PRIVILEGED MATERIAL. ANY REVIEW, RETRANSMISSION, DISSEMINATION OR OTHER USE OF OR TAKING OF ANY ACTION IN RELIANCE UPON, THIS INFORMATION BY PERSONS OR ENTITIES OTHER THAN THE INTENDED RECIPIENT IS PROHIBITED. IF YOU RECEIVED THIS INFORMATION IN ERROR, PLEASE CONTACT THE SENDER AND THE PRIVACY OFFICER, AND PROPERLY DISPOSE OF THIS INFORMATION.
*
* 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/
