Justin Bem wrote:
I got this message, while using the polr function in MASS
Error in polr(EQ, don, subset = (cote != 0), method = "probit", na.action = na.omit) :
attempt for find suitable starting values failed
how can I initialise starting values ?
You might try running an ordered logistic in lrm() and using those estimates as starting values (if it runs OK). David Duffy.