Displaying 4 results from an estimated 4 matches for "t_stage".
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n_stage
2009 Sep 02
1
a question for beginner
Hello,
i have this dataset http://www.umass.edu/statdata/statdata/data/pharynx.txt.
the variables GRADE, T_STAGE anda N_STAGE are qualitative or quantitative
variables???
i only have this simple doubt...!
another example: why in the dataset ovarian (library survival) the variable
ecog.ps: ECOG performance status (1 is better, see reference) it is
consider quantitative?
Thank's for all..!!
[[al...
2011 Nov 30
0
formula for calculating the survival probability for nomogram
...ate total points and probability *in
original data set* used for building the nomogram. *My question is how I get
the formula for calculating the survival probability for this nomogram. Then
I can use this formula to do validation by using other data set. *
f1 <- cph(Surv(retime,dfs) ~ age+her2+t_stage+n_stage+er+cytcyt+Cyt_PCDK2 ,
data=data11,
surv=T, x=T, y=T, time.inc=5)
surv<- Survival(f1)
surv10 <- function(lp) surv(10,lp)
surv5 <- function(lp) surv(5,lp)
quant <- Quantile(f1)
at.surv <- c(0.1, 0.3, 0.5, 0.7, 0.9)
nom<- nomogram(f1, conf.int=F,
fun=list(surv5, surv1...
2011 Nov 30
1
Nomogram with stratified cph in rms package, how to get failure probability
...ackage to make a nomogram. I was able to make
a beautiful one. However, I want to change 5-year survival probability to
5-year failure probability.
I couldn?t get hazard rate from Hazard(f1) because I used cph for the model.
Here is my code:
library(rms)
f1 <- cph(Surv(retime,dfs) ~
age+her2+t_stage+n_stage+er+grade+cytcyt+Cyt_PCDK2 , data=data11,
surv=T, x=T, y=T, time.inc=5)
surv<- Survival(f1)
haz<- Hazard(f1)
Here is the Error in UseMethod("Hazard") :
no applicable method for 'Hazard' applied to an object of class "c('cph',
'Design', 'co...
2011 Nov 29
2
Nomogram with stratified cph in Design package-- failure probability
...;s design package to make a nomogram. I was able to
make a beautiful one. However, I want to change 5-year survival probability
to 5-year failure probability.
I couldn?t get hazard rate from Hazard(f1) because I used cph for the model.
Here is my code:
f1 <- cph(Surv(retime,dfs) ~
age+her2+t_stage+n_stage+er+grade+cytcyt+Cyt_PCDK2 , data=data11,
surv=T, x=T, y=T, time.inc=5)
surv<- Survival(f1)
haz<- Hazard(f1)
Here is the Error in UseMethod("Hazard") :
no applicable method for 'Hazard' applied to an object of class "c('cph',
'Design', 'c...