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1994
2008 Mar 03
1
using 'lrm' for logistic regression
Hi R,
I am getting this error while trying to use 'lrm' function with nine
independent variables:
> res =
lrm(y1994~WC08301+WC08376+WC08316+WC08311+WC01001+WC08221+WC08106+WC0810
1+WC08231,data=y)
singular information matrix in lrm.fit (rank= 8 ). Offending
variable(s):
WC08101 WC08221
Error in j:(j + params[i] - 1) : NA/NaN argument
Now, if I take choose only four independent variables then there is...