New answers tagged splines
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Interpretation of cox.zph Output with Smoothing Splines in R
The paper linked from the question (evidently a working paper) no longer seems to be available, but there is a final published version: L. Keele, Proportionally Difficult: Testing for Nonproportional ...
- 98k
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Why are the results from the linear spline regression showing physiologically implausible coefficients?
Following up on @ThomasLumley's answer, it looks like the cplm package has a function for truncated polynomial spline bases, although it doesn't necessarily ...
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Why are the results from the linear spline regression showing physiologically implausible coefficients?
I think the problem is that you are using a different spline basis from the one you think you are using. This is the linear b-spline basis with knots at 45,55,65.
If you want the coefficients to be ...
- 43.7k
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