Thank you, Terry.
So in the spline model, how to do the interpretation for HR? For linear
term, the HR can be interpreted as "comparing a person with age 65, for
example, against mean age. But if there is no defined centering point in
spline, what's the compared value when we do the interpretation?
The normalization is the same as is found when you have type="terms" from a gam model:
each term is centered so that mean(predicted) = 0. For a simple linear term beta*age this
implies that the predicted value will be 0 at the mean of age, for a polynomial or spline
this does not translate to a
Hi all,
I have some questions about the predicted HR in coxph function including
psline covariate.
If just fitting covariate as linear form, by default, the reference value
for each of predictions type (linear predictor, risk and terms) is the mean
covariate within strata.
If the psline is speci
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