simIC

The simIC package provides tools for simulating and analyzing interval-censored survival data, including left-, right-, and uncensored observations, using a variety of parametric distributions. It is useful for teaching, model development, and method evaluation in survival analysis.

✨ Features

📦 Installation

You can install the development version of simIC from GitHub:

```r install.packages(“remotes”) remotes::install_github(“jayarasan/simIC”) library(simIC)

🧪 Simulate Survival Data # Interval-censored data only (no visit window) data <- simIC(n = 100, dist = “weibull”, shape = 1.5, scale = 5, width = 2)

Left-, right-, and uncensored data using a follow-up window and tolerance

data <- simIC(n = 100, dist = “weibull”, shape = 1.5, scale = 5, width = 2, start_time = 0, end_time = 10, uncensored_tol = 0.1)

📈 Model Fitting Examples

Direct MLE for interval-censored data

fit_int <- mle_int(data\(left, data\)right, dist = “weibull”) print(fit_int$estimates)

Imputation-based MLE (midpoint)

fit_imp <- mle_imp(data\(left, data\)right, dist = “weibull”, impute = “midpoint”) print(fit_imp$estimates)

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