[R] problem with fitted probability in glm

[flavio.zanini@epfl.ch]

Good morning,

Sorry to disturb you.

I have a set of variable (not correlated) and with a stepwise selection
procedure (step) on my multiple glm I obtain a result but with a warning message
saying:

fitted probabilities numerically 0 or 1 occurred in: glm.fit(x[, jj, drop =
FALSE], y, wt, offset = object$offset,

I try to understand what it means without success. Could you help me?

Thanks

Flavio Zanini