I want to see whether patients have a higher risk of seizures, the bigger their brain tumor.
My dependent variable is therefore "seizure (yes, no)" and my independent variable is "tumor size" ranging from 1 to 5.
There is a significant correlation if I just type
logistic risk size
creating a logistic regression for the variable, but if I run it as
logistic risk i.size
there is no change, but I can see the value gets more significant the larger the tumor.
I'm quite suspicious this change is significant but I think my problem is I can't get it to recognize it as an ordinal variable.
Perhaps the solution is simply not to treat it as ordinal but as continuous, and therefore my original result is true?