
Hello Gurus:
 
I'm using basic survival analysis, and trying to use survreg, and I provided the parameter formula= and data=, but I got an error saying:
 
Error in terms.default(formula, special, data = data) :         no terms component
I'm wondering what it's trying to say. Is it because I didn't provide "special"? I can't seem to find what that is in the documentation.
 
Thanks!
 
Karen
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