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Estimate epidemiological delay distributions with brms

Lifecycle: experimental R-CMD-check Codecov test coverage

Universe MIT license GitHub contributors DOI

Summary

Understanding and accurately estimating epidemiological delay distributions is important for public health policy. These estimates directly influence epidemic situational awareness, control strategies, and resource allocation. In this package, we provide methods to address the key challenges in estimating these distributions, including truncation, interval censoring, and dynamical biases. Despite their importance, these issues are frequently overlooked, often resulting in biased conclusions.

Quickstart

To learn more about epidist we recommend reading the vignettes in this order:

Installation

Installing the package

You can install the latest released version using the normal R function, though you need to point to r-universe instead of CRAN:

install.packages(
  "epidist",
  repos = "https://epinowcast.r-universe.dev"
)

Alternatively, you can use the remotes package to install the development version from Github (warning! this version may contain breaking changes and/or bugs):

remotes::install_github(
  file.path("epinowcast", "epidist"),
  dependencies = TRUE
)

Similarly, you can install historical versions by specifying the release tag (e.g. this installs 0.1.0): –>

remotes::install_github(
  file.path("epinowcast", "epidist"),
  dependencies = TRUE, ref = "v0.1.0"
)

Note: You can also use that last approach to install a specific commit if needed, e.g. if you want to try out a specific unreleased feature, but not the absolute latest developmental version.

Installing CmdStan (optional)

By default epidist uses the rstan package for fitting models. If you wish to use the cmdstanr package instead, you will need to install CmdStan, which also entails having a suitable C++ toolchain setup. We recommend using the cmdstanr package to manage CmdStan. The Stan team provides instructions in the Getting started with cmdstanr vignette, with other details and support at the package site, but the brief version is:

# if you have not yet installed `epidist`, or you installed it without
# `Suggests` dependencies
install.packages(
  "cmdstanr",
  repos = c("https://stan-dev.r-universe.dev", getOption("repos"))
)

# once `cmdstanr` is installed
cmdstanr::install_cmdstan()

Note: You can speed up CmdStan installation using the cores argument. If you are installing a particular version of epidist, you may also need to install a past version of CmdStan, which you can do with the version argument.

Resources

Organisation Website

Our organisation website includes links to other resources, guest posts, and seminar schedule for both upcoming and past recordings.

Community Forum

Our community forum has areas for question and answer and considering new methods and tools, among others. If you are generally interested in real-time analysis of infectious disease, you may find this useful even if do not use epidist.

Contributing

We welcome contributions and new contributors! We particularly appreciate help on identifying and identified issues. Please check and add to the issues, and/or add a pull request and see our contributing guide for more information.

How to make a bug report or feature request

Please briefly describe your problem and what output you expect in an issue.

If you have a question, please don’t open an issue. Instead, ask on our forum.

See our contributing guide for more information.

Code of Conduct

Please note that the epidist project is released with a Contributor Code of Conduct. By contributing to this project, you agree to abide by its terms.

Citation

If you use epidist in your work, please consider citing it using citation("epidist").

Package citation information
citation("epidist")
To cite package 'epidist' in publications use:

  Adam Howes, Park S, Sam Abbott (NULL). _epidist: Estimate
  Epidemiological Delay Distributions With brms_.
  doi:10.5281/zenodo.14213017
  <https://doi.org/10.5281/zenodo.14213017>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {epidist: Estimate Epidemiological Delay Distributions With brms},
    author = {{Adam Howes} and Sang Woo Park and {Sam Abbott}},
    year = {NULL},
    doi = {10.5281/zenodo.14213017},
  }

If using our methodology, or the methodology on which ours is based, please cite the relevant papers. This may include:

Contributors

All contributions to this project are gratefully acknowledged using the allcontributors package following the all-contributors specification. Contributions of any kind are welcome!

Code

seabbs, athowes, parksw3, damonbayer, medewitt

Issue Authors

kgostic, TimTaylor, jamesmbaazam

Issue Contributors

pearsonca, sbfnk, SamuelBrand1, zsusswein