Survival analysis compares the statistical strength of predictors for events encoded as occuring or censored in concert with a time variable. It can be parametric or non-parametric.
Questions tagged [survival]
445 questions
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Survival analysis in ggplot in R
I coded the following (I used data=lung)
library(ggsurvfit)
library(ggplot2)
p <- survfit2(Surv(time, status)~sex, data=lung)
ggsurvfit(p,
type = "survival"
)
add_censor_mark() %>%
add_confidence_interval()…
user19745561
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flexsurvreg Error in `[.default`(Y, , "time") : subscript out of bounds
Given the following data from the Surv function, and trying to fit a model using flexsurvreg I'm getting an error stating:
Error in [.default(Y, , "time") : subscript out of bounds
I'm not sure why this error is occurring. I must be something to…
Jake
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Error in survival::survdiff(eval(fit$call$formula), data = data) : Right censored data only
I'm encountering a problem similar to
Survival not recognizing right censored data
but the suggested fix isn't working. I've confirmed that the censoring variable is numeric and I'm not encountering any problems when using coxph function. I only get…
Blake Baum
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Landmark survival analysis
Please modify the code so that it includes "table at risk" under each KM curve (i.e., for each landmark set).
library(survival)
library(tidyverse)
mod1 - survfit (Surv(time, status) ~ sex, data = lung)
df <- as.data.frame(unclass(mod1)[c(2:7,…
Elmir Omerovic
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2 answers
Ggsurvplot doesn't work and the basic plot of the survival curve shows the cumulative hazard plot instead
for a project I'm conducting a survival analysis in R on two datasets analysing how much survival time depends on some blood biomarkers; one was used for development and one for validation.
The problem is when I try to launch the plots of the…
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0 answers
Different results from predict() function and manual calculations of cox model
I have a cox model with variables of age, living environment, Rankin, side of stroke, and systolic blood pressure. Summary of model is:
coef exp(coef) se(coef) z p
age 0.061691 1.063634 …
ikeagoddess
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ggsurvplot return error: arguments imply differing number of rows
I use ggsurvplot to generate survival plots and encountered problems when my Surv fit function includes multiple censored data.
This is the data link: testdata
my fit function and my ggsurvplot…
Elin Zhang
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- 1
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votes
1 answer
Function to return survival (survfit) and kaplan-meier (ggsurvplot) given a list or vector of dependent variables
Given a data frame in R with different columns that could work as dependent variables, I'm trying to create a function that receives the data frame 'df', list or vector with dependent variables 'vars', a time variable 'time' and a status variable…
Allan
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Is it possible to predict survival object (time + event) in survival model?
I'm wondering Is it possible to predict survival object (time + event) in survival model?
Also, if it is, is it possible to use Brier's score to measure a single person rather rhan a overal model? Because if we can predict the survival object, we…
Cabiria Liang
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Apply LASSO in R using glmnet package for cox model
I want to perform LASSO for cox ph model in R for variable selection.
Somewhere, I found this code and done my analysis, somewhere else I found it is for elastic net, someone please confirm I am using the right code.
lasso<- cv.glmnet(xmat, ysurv,…
Basheer
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0 answers
Kaplan Meier curve
I'm working on survival analysis from my dataset.
My question is :
Is there a function in survminer or ggplot package that make the survival curve style look like Stata output (as if it's created by stata software)?
Thanks in advance.
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Issue with parenting networked objects (Unity Mirror)
So I've been making this online survival game using mirror and I have come across an issue with spawning in a weapon for the player.
Apparently you can only parent an object to another networked object (when executed by the server).
When I was doing…
Skourge
- 1
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1 answer
Kaplan-Meier Survival curve with 3 Plots
I am very new to R studio, and I am currently learning how to do Kaplan-Meier survival curves.
Here are the columns that are needed and the information the columns contain:
Group: “normal”, “high”
Response: “responder” “non-responder”
Days: this is…
Maze
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Survival analysis in R
I am trying to do a survival analysis on R. I installed survival, survminer, and dplyr functions. Then I run library(survival) and library(survminer). After executing the command I found this
Loading required package: ggplot2
Need help getting…
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0 answers
R : does `predict` still center linear predictors of categorical variables?
Until then, to obtain the linear predictors of a Cox model via predict, it was accepted that the linear predictors were centred.
When they were recalculated, the continuous and categorical variables were centered (see Linear predictor from…
Flora Grappelli
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