onlinear test?
--Michael Margolis
..QUOTE..
Use pspline within a Cox model. It includes a fairly general test for
nonlinearity, that is similar to GAM models.
Terry Therneau
> coxph(Surv(time, status) ~ ph.ecog + pspline(age), lung)
Call:
coxph(formula = S
hat's on screen is gone forever.
Thanks,
Michael
Michael Margolis
Profesor Investigador
Escuela de EconomÃa
Universidad de Guanajuato
UCEA-Campus Marfil, Fracc 1
El Establo, Guanajuato, Gto. CP 36250
Mexico
(52)(473) 735 29 25 Ext. 2858
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