On 21 Ean 2009, at 04:33, Zoe Hyde wrote:
I have used estat con to obtain Harrell's C for both models, and
there doesn't seem to be a lot of difference - 0.69 for one model
and 0.67 for the other. However, I'd feel more comfortable if there
was some way I could test the significance of the difference. Is
there is test I can use to compare these two results?
These don't look like clinically useful models. Whether or not they
are statistically significantly different, they aren't clinically
significantly different.
What happens when you put both in the same model?
Ronan Conroy
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