Questions tagged [cox]
67 questions
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R - Different length in variable and residuals from the model
I'm trying to find the the best variable transformation that yields linearity in log hazard or log cumulative hazard of a Cox proportional Hazard model. As those ar research data, I cannot publish them here. For this I'm trying to plot the variable…
ecjb
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R- Likelihood function for Cox model with frailty
I am trying to write an R code for the likelihood function for a cox model with gamma frailty. I know there are packages in R which would do that easily. But I want to write a customized likelihood function for cox model with gamma frailty for my…
F.gh
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Survival analysis for various timepoints
I am running survival analysis on a very large data set and attempting to examine the impact of a particular variable on survival at various time points (30 days, 90 days, 180 days, 365 days).
I want to run a univariate Cox regression and I am not…
Sam
- 11
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Lifelines boolean index in Python did not match indexed array along dimension 0; dimension is 88 but corresponding boolean dimension is 76
This very simple piece of code,
# imports...
from lifelines import CoxPHFitter
import pandas as pd
src_file = "Pred.csv"
df = pd.read_csv(src_file, header=0, delimiter=',')
df = df.drop(columns=['score'])
cph = CoxPHFitter()
cph.fit(df,…
slesher
- 109
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Cox Hazard in function R
I have problem with reference to the variable in R.
Look for my easy function:
CoxStep <- function(dataset,a,b){
m1 = coxph(Surv(b,a)~.-dataset[,b]-dataset[,a] ,data=dataset)
summary(m1)
}
I call the function as follow:
CoxStep(data,…
Bartek Czech
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Cox Proportional hazard model - Comparing coefficients from sub datasets
I am doing a study of credit risk in europe for the period of 2006 - 2016 by using the Cox Proportional Hazard Model (time costant edition) in R (coxph). I have succesfully implemented the model for the whole period with 8 independent variables.
Now…
0
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1 answer
extract log rank (score) test result wiht p-value for Coxph Model
I have 100 replicates of coxph model fitted in loop. I am trying to extract out log-rank score test result with p-values for each replicate in a data frame or list. I am using the following. But, it gives me only log rank score, not p-value. Any…
Krina M
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