Displaying 4 results from an estimated 4 matches for "tsurv".
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surv
2007 Aug 06
1
(Censboot, Z-score, Cox) How to use Z-score as the statistic within censboot?
Dear R Help list,
My question is regarding extracting the standard error or Z-score from a
cph or coxph call. My Cox model is: -
modz=cph(Surv(TSURV,STATUS)~RAGE+DAGE+REG_WTIME_M+CLD_ISCH+POLY_VS,
data=kidneyT,method="breslow", x=T, y=T)
I've used names(modz) but can't see anything that will let me extract
the Z scores for each coefficient or the standard errors in the same way
one can use coef (modz).
I need to get either t...
2007 Aug 16
1
(coxph, se) Obtaining standard errors of coefficients from coxph to store
Hi all,
I'm wanting to be able to find and store the z-score of coxph below: -
modz=coxph(Surv(TSURV,STATUS)~RAGE+DAGE+REG_WTIME_M+CLD_ISCH+POLY_VS,
data=kidneyT,method="breslow")
I know summary(modz) will give me this, but how do i extract the
standard error or z-score values in a similar way to obtaining the
coefficients by coef(modz) ? I think it must be something to do with
modz$va...
2011 Sep 12
1
nested anova<-R chrashing
Hi,
I tried to do a nested Anova with the attached Data. My response
variable is "survivors" and I would like to know the effect of
(insect-egg clutch) "size", "position" (of clutch on twig) and "clone"
(/plant genotype) on the survival of eggs (due to predation). Each plant
was provided with three different sizes of clutches (45,15,5) and had
2007 Sep 10
0
Loop and loop output [Cox model, for, function, loglik]
...=0),(var1=var2-bp2))
}
}
T3=CIT3(CLD_ISCH,CLD_ISCH,tf2)
#-----------------------------------------------------------------------
-------#
#-----------------------------------------------------------------------
-------#
newdata=data.frame(T1,T2,T3,kidneyT)
attach(newdata)
coxmodel=coxph(Surv(TSURV,STATUS)~RAGE+DAGE+REG_WTIME_M+POLY_VS+T1+T2+T3
,
method="breslow", data=newdata)
coxmodel$loglik[2]
##########################################################
Regards and Thx
DaveL
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