Yeah, tried that, and none of these words seem to be it. The word "kurs" does mean odds but only in a gambling context; it also means "exchange rate" when applied to currencies, it's that kind of a financial word. I'm looking for what a mathematician would use.

Different languages don't carve reality the same way (which is why I find wikipedia a better dictionary than the piece of relative uselessness that is Google Translate, because if I understand both articles then I can be sure I have the right word for my meaning), but I'm still sure such a word must exist because it's a specific thing in mathematics. That's why I posted in the dumb questions thread. ;)

EDIT: Aha. "iloraz szans". Can't remember ever hearing this term, but at least I know now why it's not linked to from the English article - because Polish wikipedia in its wisdom decided it's not worthy of its own article, and buried this info in an article about logistic regression.