Logistic Regression queries

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Logistic Regression queries

Stats Q
Hi all,

I’m currently learning how to use Logistic Regression. I have a couple of
queries that I can’t seem to find the answer to;

1) Most  of my odds ratios are around 1, with some slightly higher at
15, and one at 386.  This seems extremely high. Is there an explanation for
such a high odds ratio?
2) I’ve read that high standard errors signal multcollinearity. Just
how high is high though?