All Questions
Tagged with simulation survival
57
questions
2
votes
1
answer
286
views
Two-component Cox proportional hazards model Simulation
In an article that I have been reading, they have a simulation study:
In this simulation, we generate $T_i$ from the following
group-specific linear transformation model: $$H(T_i) = \beta_{k,1}
X_{i,...
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0
votes
0
answers
36
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Generate time-to-event data from a piecewise exponential model with a binary covariate? [duplicate]
How could I generate time-to-event data from a piecewise exponential model with a binary covariate in R? Could someone point me to some R packages and/or walk through how to code this from scratch?
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0
votes
1
answer
143
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Simulating Time-Dependent Covariate and Applying coxph Function to Estimate Association Parameters
Let $T$ denote a failure time random variable drawn from a proportional hazards model with a time-invariant covariate $X\sim U(2, 7)$ and a time-varying covariate $Z(t) = kt$ for $k > 0$. Assuming ...
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2
votes
1
answer
111
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Censoring proportions and covariate defining when simulating survival data using simsurv package in R
I'm trying to identify how the cox proportional hazards model behave with different censoring proportions and sample sizes. (Censoring proportions = 20%, 50%, 70%). For that I need to simulate ...
0
votes
0
answers
21
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Simulate competing risks
I am trying to simulate competing risks data for a power analysis. Based on historical data, we know that after 12 months:
40% had experienced the event of interest
20% had experienced the competing ...
- 1,900
1
vote
1
answer
227
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Simulating survival data to reflect existing complex dataset and censoring proportions
I am trying to compare the impact of different censoring proportions on different survival analysis models. For that, I plan to do a simulation study and then apply the best model on real-life child ...
3
votes
1
answer
64
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Does this approach to simulation for survival analysis, of breaking the analysis into deaths versus survivors, appear reasonable?
I've spent last several weeks learning about survival analysis, see one of the last posts at How to simulate variability (errors) in fitting a gamma model to survival data by using a generalized ...
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3
votes
1
answer
254
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Generate survival data with functional data using R
I am reading this article here and trying to regenerate their simulation study. Here is this scenario here, among others, but if I can figure out one, the rest follow. That is,
Simulation set-up
we ...
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4
votes
1
answer
111
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How to simulate variability (errors) in fitting a gamma model to survival data by using a generalized minimum extreme value distribution in R?
As shown below and per the R code at the bottom, I plot a base survival curve for the lung dataset from the survival package ...
- 857
1
vote
1
answer
267
views
Correctly simulating an extreme value distribution for survival analysis?
In the image and per the code at the bottom of this post, I plot survival curves for the lung dataset from the survival package using a fitted exponential ...
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2
votes
1
answer
116
views
How to appropriately model the uncertainty of the exponential distribution model when running survival simulations?
In the code shown at the bottom of this post, I plot survival curves for the lung dataset from the survival package using a ...
- 857
2
votes
2
answers
126
views
How to introduce uncertainty in fitting the original data when simulating survival curves?
The code below simulates the uncertainty in the lognormal distribution parameters, using the MASS::mvrnorm() function and the ...
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1
vote
1
answer
128
views
How to generate multiple forecast simulation paths for survival analysis?
I am trying to create R code for generating multiple simulation paths for forecasting survival probabilities. In the code posted at the bottom, I take the survival ...
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2
votes
2
answers
81
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Is this an adequate example for simulation and modeling uncertainty in survival and hazard curve estimates?
I'm studying simulation and in particular uncertainty in survival curve estimates, by drawing from a distribution of parameters (for the Weibull distribution), using the variance-covariance matrix ...
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0
votes
1
answer
328
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How to generate simulation paths for Weibull distribution in R?
I'm trying to generate simulation paths across time in R for survival and hazard functions using the Weibull distribution. Here are the steps I'm taking so far. I need direction because I'm not able ...
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