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2007 Jul 31
0
Cox model with interaction
...!any(fname == zname)) { :
missing value where TRUE/FALSE is required
Any idea about the cause of the problem and how to manage it within the Design library?
Thanks a lot for your help.
Rosalba
Dr. Rosalba Miceli
Unit? di Statistica Medica e Biometria
Fondazione IRCCS Istituto Nazionale Tumori
Via G. Venezian, 1
20133 Milan (Italy)
Tel:????????????? +39 2 23903198 / 23902456
Fax:???????????? +39 2 23902095
E-Mail:??????? rosalba.miceli at istitutotumori.mi.it
<www.istitutotumori.mi.it/biometria>