Displaying 2 results from an estimated 2 matches for "survreg6".
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survreg
2011 Nov 14
0
Enquiry about 2nd-order interactions survival analysis
...ple name)
>
> I would like to modify survreg() to be a second-order interactions
> regression while there is no 2nd-order interactions survival
> regression as I searched over www.rseek.org. I tried to read through
> the codes of survreg(), but I am stuck (cannot understand) at
> survreg6.c
>
> survreg6.c apply C Language which involves Cholesky decomposition
> multi-matrix (first-order interactions) calculation.
> 1) chinv2.c
> 2) cholesky3.c
> 3) chsolve2.c (only solve the equations of first-order interactions)
>
> I do appreciate if Dr Terry willing...
2011 Nov 12
2
Second-order effect in Parametric Survival Analysis
Hi experts,
http://r.789695.n4.nabble.com/file/n4034318/Parametric_survival_analysis_2nd-order_efffect.JPG
Parametric_survival_analysis_2nd-order_efffect.JPG
As we know a normal survival regression is the equation (1)
Well, I'ld like to modify it to be 2nd-order interaction model as shown in
equation(2)
Question:
Assume a and z is two covariates.
x = dummy variable (1 or 0)
z = factors