README.qmd

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format: gfm
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# Standardized Survival Probabilities and Contrasts Between Hierarchical Units in Multilevel Survival Models

This repository contains synthetic data and annotated code in Stata and R to replicate the analyses from the manuscript titled _"Standardized Survival Probabilities and Contrasts Between Hierarchical Units in Multilevel Survival Models"_, published in BMC Medical Research Methodology:

> Gasparini, A., Crowther, M.J. & Schaffer, J.M.
> Standardized survival probabilities and contrasts between hierarchical units in multilevel survival models.
> BMC Med Res Methodol (2026).
> https://doi.org/10.1186/s12874-026-02782-8

## Repository Structure

This repository is organised as follows:

* The `Stata` directory contains Stata code to replicate the analyses reported in the manuscript;

* The `R` directory contains R code to replicate the analyses reported in the manuscript;

* The `data-raw` folder contains R code to generate the synthetic data and prepare it for analysis;

* The `data` folder contains the datasets used for analysis and other data objects that are needed to replicate the analyses;

* Finally, the `output` folder contains the output of all Stata and R scripts, including logs and a variety of plots depicting the different kind of predictions that could be obtained within the framework.

A tree-like representation of the folders structure is included below.

```{r}
library(fs)
dir_tree(type = "directory")
```

## License

The code from this repository is licensed under the [MIT license](https://github.com/RedDoorAnalytics/multilevel-survival-regstd/blob/main/LICENSE).
All other content is released under a [Creative Commons Zero v1.0 Universal](https://creativecommons.org/publicdomain/zero/1.0/) license.