Displaying 20 results from an estimated 200 matches similar to: "A problem about nomogram--thank you for you help"
2010 Oct 04
1
I have aproblem about nomogram--thank you for your help
dear professor:
I have a problem about the nomogram.I have got the result through analysing the dataset "exp2.sav" through multinominal logistic regression by SPSS 17.0.
and I want to deveop the nomogram through R-Projject,just like this :
> n<-100
> set.seed(10)
> T.Grade<-factor(0:3,labels=c("G0", "G1", "G2","G3"))
>
2010 Oct 04
2
i have aproblem --thank you
dear professor:
thank you for your help,witn your help i develop the nomogram successfully.
after that i want to do the internal validation to the model.i ues the bootpred to do it,and then i encounter problem again,just like that.(´íÎóÓÚerror to :complete.cases(x, y, wt) : ²»ÊÇËùÓеIJÎÊý¶¼Ò»Ñù³¤(the length of the augment was different))
i hope you tell me where is the mistake,and maybe i have
2011 Oct 21
1
cph/nomogram Design/RMS package hazard ratio: interquartile vs per unit
Hello,
I am constructing a nomogram using cph and nomogram commands in Dr.
Harrell's Design/RMS package. The HR that I obtain for dichotomous and
categorical variables are identical to those that I obtain using STATA
stcox. However, the inter-quartile HR I obtain for continuous variables is
obviously different, since STATA gives me HR for each unit (year,
centimeter, etc) like coxph would
2010 Aug 25
1
modify a nomogram
Hi,
I would like to emphasize ("zoom") the zone of a nomogram where the
probability are > 0.01
(nomogram built with nomogram, Design).
As a consequence, I don't need to draw the part of the "Total points"
axis with score < 60 equivalent in my case to a linear predictor < 4.5
- As far as I know, this is not possible with the arguments of the function.
- Changing
2013 Feb 14
1
Nomogram after Cox Random Effect (frailty) model
Dear R-users,
I am a novice R-user with some experience in using the RMS package for taking nomograms after various survival models.
This time, I am trying to plot a nomogram after a Random Effects Cox, implemented by the "coxme" package. My questions are:
1. Is it possible to take a nomogram directly after the coxme survival function?
2. If not is there a way to take the linear
2010 May 19
1
Nomogram with multiple interactions (package rms)
Dear list,
I'm facing the following problem :
A cox model with my sex variable interacting with several continuous variables : cph(S~sex*(x1+x2+x3))
And I'd like to make a nomogram. I know it's a bit tricky and one mights argue that nomogram is not a good a choice...
I could use the parameter interact=list(sex=("male","female"),x1=c(a,b,c))... but with rcs or pol
2011 Jun 24
1
Competing-risks nomogram
Hi R users,
I'd like to draw a nomogram using a competing-risks regression (crr function
in R), rather than a cox regression. However, the nomogram function provided
in the Design package is not good for this purpose.
Do you have any suggestion.
I really appreciate your help
Many thanks
F.Abdollah, MD
San-Raffele hospital
Milan, Italy
--
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2011 Nov 29
2
Nomogram with stratified cph in Design package-- failure probability
Hello,
I am using Dr. Harrell'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,
2011 Nov 30
0
formula for calculating the survival probability for nomogram
Hi, I used Dr. Harrell's rms package to make a nomogram.
Below is my code for nomogram and calculate 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) ~
2017 Oct 26
1
nomogram function error
Hi R-help,
?
I have fit a cox ph model to my data, but have beenreceiving an error when trying to fit a model to the nomogram. Here is the codeand corresponding error:
?
?
>nomogramCF = nomogram(cph_age6_40avp4,
+????????????????????lp.at= seq(-10,10,by =0.5),lp = TRUE,
+??????????????????????
+??????????????????????funlabel="5year survival",
2005 May 30
0
Nomogram
I don't think Spencer replied to your message. It wasn't addressed to you. He was replying to a specific post on nomograms. However you might try being less specific as a search on "spatial cluster" gave back
[R] mclust - clustering by spatial patterns http://finzi.psych.upenn.edu/R/Rhelp02a/archive/13474.html
[R] Spatial Clustering
2011 Nov 30
1
Nomogram with stratified cph in rms package, how to get failure probability
Hello,
I am using Dr. Harrell's rms 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:
library(rms)
f1 <- cph(Surv(retime,dfs) ~
age+her2+t_stage+n_stage+er+grade+cytcyt+Cyt_PCDK2 , data=data11,
2008 Sep 29
0
nomogram function (design library)
Dear colleagues,
I hope someone can help me with my problem.
I have fitted a cox model with the following syntax:
# cox01def <-cph(Surv(TEVENT,EVENT) ~ ifelse(AGE>50, (AGE-50)^2,0) +
BMI +
# HDL+DIABETES +HISTCAR2 + log(CREAT)+
as.factor(ALBUMIN)+STENOSIS+IMT,data # = XC, x=T, y=T, surv=T) *1
Furthermore I have estimated my beta's also with a Lasso method -
Coxpath ( from
2013 Mar 21
1
Re-order variables listed in nomogram?
Hi,
I am using the function "nomogram" in the rms package for survival analysis.
How is the order in which variables determined and how can I change it? I use it with a cph() model.
Many Thanks
Eleni Rapsomaniki
Clinical Epidemiology Group
Department of Epidemiology and Public Health
University College London
2007 Oct 03
1
Nomogram
Hi R users.
I have a model of cox that already it is estimated (I have only the
model estimated, I haven't data), how can I determine a nomogram with
R? Is it posible to do nomograms in Design package? I think that's
only when the model (Cox Regression in this case) is before estimated
in R.
Thanks
2013 Jun 24
2
Nomogram (rms) for model with shrunk coefficients
Dear R-users,
I have used the nomogram function from the rms package for a logistic
regresison model made with lrm(). Everything works perfectly (r version
2.15.1 on a mac). My question is this: if my final model is not the one
created by lrm, but I internally validated the model and 'shrunk' the
regression coefficients and computed a new intercept, how can I build a
nomogram using that
2006 Nov 06
1
Competing risk nomogram
Dear R Users,
Do you have a sample code for developing a nomogram with competing-risks?
Any help is appreciated.
Kind regards,
ND Nguyen
2003 Nov 04
2
help with nomogram function
I have fitted a logistic regression model
> failed.lr2$call
lrm(formula = failed ~ Age + task2 + Age:task2, data = time.long,
na.action = na.omit)
using the Design package functions and would like to generate a
nomogram from this model.
the datadist information is generated and stored in
> ddist
time.long$Age time.long$task2
Low:effect 45
2013 Nov 12
0
A problem about nomogram
You did not follow the posting guide, did you use pure ascii email, and
used illegal characters in your source code. This caused extra work.
Once I cleaned up your characters and made the example self-contained,
the labels worked fine for me. Here's the cleaned-up code:
library(rms)
x1 <- runif(20)
x2 <- runif(20)
y <- sample(0:1, 20, TRUE)
label(x1) <- 'A'
label(x2)
2009 Apr 25
3
Nomogram with stratified cph in Design package
Hello,
I am using Dr. Harrell's design package to make a nomogram. I was able to
make a beautiful one without stratifying, however, I will need to stratify
to meet PH assumptions. This is where I go wrong, but I'm not sure where.
Non-Stratified Nomogram: