simulation_frailty {survregVB} | R Documentation |
Simulated data incorporating shared frailty effects to model clustered time-to-event data.
Description
Simulated data incorporating shared frailty effects to model clustered time-to-event data.
Usage
simulation_frailty
Format
A dataframe with 75 observations grouped into 15 clusters, each with 5 individuals.
- x1
Continuous covariate from
N(1, 0.2^2)
- x2
Binary covariate from
Bernoulli(0.5)
- Time
True survival time
- Time.15
Observed survival time accounting for uniformly distributed right censoring time from
uniform(0,u)
- delta
Event indicator for uncensored data (always 1 in this simulation.)
- delta.15
Event indicator after censoring (1 = event, 0 = censored).
- cluster
Cluster ID (1–15), indicating group-level frailty
. @references Xian, C., Souza, C. P. E. de, He, W., Rodrigues, F. F., & Tian, R. (2024). Fast variational bayesian inference for correlated survival data: An application to invasive mechanical ventilation duration analysis. https://doi.org/10.48550/ARXIV.2408.00177