I have a question about this Cox regression analyse table;

View attachment 1337

If you take a look at the valuation of variables in this table, you will see that some are coded binair (0 or 1).

But for some reason the author of this table used for 'tooth type' a valuation from 1 to 6.

So my questions are;

Is that even possible in a cox regression analyse?

And how do we interpreted the data then?

Thank you for any comment!

View attachment 1337

If you take a look at the valuation of variables in this table, you will see that some are coded binair (0 or 1).

But for some reason the author of this table used for 'tooth type' a valuation from 1 to 6.

So my questions are;

Is that even possible in a cox regression analyse?

And how do we interpreted the data then?

Thank you for any comment!

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