index.qmd

# Welcome {.unnumbered}

```{r, out.width = "100%", fig.align = "center", echo=F}
knitr::include_graphics(here::here("images", "Epi R Handbook banner beige 1500x500.png"))
# library(knitr)
# opts_chunk$set(list(echo = FALSE, eval = FALSE))
```

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<!-- ## An R reference manual for applied epidemiology and public health {.unnumbered} -->

<!-- <span style="color: brown;">**The Epi R Handbook is an R reference manual for applied epidemiology and public health.**</span> -->

<!-- ## About this handbook   -->

## R for applied epidemiology and public health {.unnumbered}

**Usage**: This handbook has been used over **3 million times by 850,000 people** around the world.

**Objective:** Serve as a quick R code reference manual (online and [**offline**](#data-used)) with task-centered examples that address common epidemiological problems.

**Are you just starting with R?** Try our [**free interactive tutorials**](https://www.appliedepi.org/tutorial/) or synchronous, virtual [**intro course**](https://www.appliedepi.org/live/) used by US CDC, WHO, and 400+ other health agencies and Field Epi Training Programs worldwide.

**Languages:** [French (Français)](https://epirhandbook.com/fr), [Spanish (Español)](https://epirhandbook.com/es/), [Vietnamese (Tiếng Việt)](https://epirhandbook.com/vn/), [Japanese (日本)](https://epirhandbook.com/jp/), [Turkish (Türkçe)](https://epirhandbook.com/tr/), [Portuguese (Português)](https://epirhandbook.com/pt), [Russian (Русский)](https://epirhandbook.com/ru)

<!-- * Use practical epi examples - cleaning case linelists, making transmission chains and epidemic curves, automated reports and dashboards, modeling incidence and making projections, demographic pyramids and rate standardization, record matching, outbreak detection, survey analysis, survival analysis, GIS basics, contact tracing, phylogenetic trees...   -->

<!-- **How is this different than other R books?**   -->

<!-- * It is community-driven - *written for epidemiologists by epidemiologists* in their spare time and leveraging experience in local, national, academic, and emergency settings   -->

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<br> [**Written by epidemiologists, for epidemiologists**]{style="color: black;"}

::: {style="display: flex;"}
<div>

```{r, out.width = "100%", fig.align = "center", echo=F}
knitr::include_graphics(here::here("images", "Applied_Epi_logo.png"))
```

</div>

::: {.col data-latex="{0.05\\textwidth}"}
  <!-- an empty Div (with a white space), serving as
a column separator -->
:::

<div>

[**Applied Epi**](http://www.appliedepi.org) is a nonprofit organisation and grassroots movement of frontline epis from around the world. We write in our spare time to offer this resource to the community. Your encouragement and feedback is most welcome:

-   Visit our [**website**](http://www.appliedepi.org) and [**join our contact list**](https://forms.gle/9awNd8syypTSYUsn7)\
-   **contact\@appliedepi.org**, tweet [**\@appliedepi**](https://twitter.com/appliedepi), or [**LinkedIn**](www.linkedin.com/company/appliedepi)\
-   Submit issues to our [**Github repository**](https://github.com/appliedepi/epiRhandbook_eng)

**We offer live R training** from instructors with decades of applied epidemiology experience - [www.appliedepi.org/live](www.appliedepi.org/live).

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## How to use this handbook {.unnumbered}

-   Browse the pages in the Table of Contents, or use the search box
-   Click the "copy" icons to copy code\
-   You can follow-along with [the example data](#data-used)

**Offline version**

See instructions in the [Download handbook and data](#data-used) page.

<!-- ======================================================= -->

## Acknowledgements {.unnumbered}

This handbook is produced by an independent collaboration of epidemiologists from around the world drawing upon experience with organizations including local, state, provincial, and national health agencies, the World Health Organization (WHO), Doctors without Borders (MSF), hospital systems, and academic institutions.

This handbook is **not** an approved product of any specific organization. Although we strive for accuracy, we provide no guarantee of the content in this book.

### Contributors {.unnumbered}

**Editor:** [Neale Batra](https://www.linkedin.com/in/neale-batra/)

**Authors**: [Neale Batra](https://www.linkedin.com/in/neale-batra/), [Alex Spina](https://github.com/aspina7), [Paula Blomquist](https://www.linkedin.com/in/paula-bianca-blomquist-53188186/), [Finlay Campbell](https://github.com/finlaycampbell), [Henry Laurenson-Schafer](https://github.com/henryls1), [Isaac Florence](www.Twitter.com/isaacatflorence), [Natalie Fischer](https://www.linkedin.com/in/nataliefischer211/), [Aminata Ndiaye](https://twitter.com/aminata_fadl), [Liza Coyer](https://www.linkedin.com/in/liza-coyer-86022040/), [Jonathan Polonsky](https://twitter.com/jonny_polonsky), [Yurie Izawa](https://ch.linkedin.com/in/yurie-izawa-a1590319), [Chris Bailey](https://twitter.com/cbailey_58?lang=en), [Daniel Molling](https://www.linkedin.com/in/daniel-molling-4005716a/), [Isha Berry](https://twitter.com/ishaberry2), [Emma Buajitti](https://twitter.com/buajitti), [Mathilde Mousset](https://mathildemousset.wordpress.com/research/), [Sara Hollis](https://www.linkedin.com/in/saramhollis/), Wen Lin

**Reviewers and supporters**: Pat Keating, [Amrish Baidjoe](https://twitter.com/Ammer_B), Annick Lenglet, Margot Charette, Danielly Xavier, Marie-Amélie Degail Chabrat, Esther Kukielka, Michelle Sloan, Aybüke Koyuncu, Rachel Burke, Kate Kelsey, [Berhe Etsay](https://www.linkedin.com/in/berhe-etsay-5752b1154/), John Rossow, Mackenzie Zendt, James Wright, Laura Haskins, [Flavio Finger](ffinger.github.io), Tim Taylor, [Jae Hyoung Tim Lee](https://www.linkedin.com/in/jaehyoungtlee/), [Brianna Bradley](https://www.linkedin.com/in/brianna-bradley-bb8658155), [Wayne Enanoria](https://www.linkedin.com/in/wenanoria), Manual Albela Miranda, [Molly Mantus](https://www.linkedin.com/in/molly-mantus-174550150/), Pattama Ulrich, Joseph Timothy, Adam Vaughan, Olivia Varsaneux, Lionel Monteiro, Joao Muianga

**Illustrations**: Calder Fong

<!-- **Editor-in-Chief:** Neale Batra  -->

<!-- **Project core team:** Neale Batra, Alex Spina, Amrish Baidjoe, Pat Keating, Henry Laurenson-Schafer, Finlay Campbell   -->

<!-- **Authors**: Neale Batra, Alex Spina, Paula Blomquist, Finlay Campbell, Henry Laurenson-Schafer, [Isaac Florence](www.Twitter.com/isaacatflorence), Natalie Fischer, Aminata Ndiaye, Liza Coyer, Jonathan Polonsky, Yurie Izawa, Chris Bailey, Daniel Molling, Isha Berry, Emma Buajitti, Mathilde Mousset, Sara Hollis, Wen Lin   -->

<!-- **Reviewers**: Pat Keating, Mathilde Mousset, Annick Lenglet, Margot Charette, Isha Berry, Paula Blomquist, Natalie Fischer, Daniely Xavier, Esther Kukielka, Michelle Sloan, Aybüke Koyuncu, Rachel Burke, Daniel Molling, Kate Kelsey, Berhe Etsay, John Rossow, Mackenzie Zendt, James Wright, Wayne Enanoria, Laura Haskins, Flavio Finger, Tim Taylor, Jae Hyoung Tim Lee, Brianna Bradley, Manual Albela Miranda, Molly Mantus, Priscilla Spencer, Pattama Ulrich, Joseph Timothy, Adam Vaughan, Olivia Varsaneux, Lionel Monteiro, Joao Muianga   -->

### Funding and support {.unnumbered}

This book was primarily a volunteer effort that took thousands of hours to create.

The handbook received some supportive funding via a COVID-19 emergency capacity-building grant from [TEPHINET](https://www.tephinet.org/), the global network of Field Epidemiology Training Programs (FETPs).

Administrative support was provided by the EPIET Alumni Network ([EAN](https://epietalumni.net/)), with special thanks to Annika Wendland. EPIET is the European Programme for Intervention Epidemiology Training.

Special thanks to Médecins Sans Frontières (MSF) Operational Centre Amsterdam (OCA) for their support during the development of this handbook.

*This publication was supported by Cooperative Agreement number NU2GGH001873, funded by the Centers for Disease Control and Prevention through TEPHINET, a program of The Task Force for Global Health. Its contents are solely the responsibility of the authors and do not necessarily represent the official views of the Centers for Disease Control and Prevention, the Department of Health and Human Services, The Task Force for Global Health, Inc. or TEPHINET.*

### Inspiration {.unnumbered}

The multitude of tutorials and vignettes that provided knowledge for development of handbook content are credited within their respective pages.

More generally, the following sources provided inspiration for this handbook:\
[The "R4Epis" project](https://r4epis.netlify.app/) (a collaboration between MSF and RECON)\
[R Epidemics Consortium (RECON)](https://www.repidemicsconsortium.org/)\
[R for Data Science book (R4DS)](https://r4ds.had.co.nz/)\
[bookdown: Authoring Books and Technical Documents with R Markdown](https://bookdown.org/yihui/bookdown/)\
[Netlify](https://www.netlify.com) hosts this website

<!-- ### Image credits {-}   -->

<!-- Images in logo from US CDC Public Health Image Library) include [2013 Yemen looking for mosquito breeding sites](https://phil.cdc.gov/Details.aspx?pid=19623), [Ebola virus](https://phil.cdc.gov/Details.aspx?pid=23186), and [Survey in Rajasthan](https://phil.cdc.gov/Details.aspx?pid=19838).   -->

## Terms of Use and Contribution {.unnumbered}

### License {.unnumbered}

<a rel="license" href="http://creativecommons.org/licenses/by-nc-sa/4.0/"><img src="https://i.creativecommons.org/l/by-nc-sa/4.0/88x31.png" alt="Creative Commons License" style="border-width:0"/></a> Applied Epi Incorporated, 2021 <br />This work is licensed by Applied Epi Incorporated under a <a rel="license" href="http://creativecommons.org/licenses/by-nc-sa/4.0/">Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License</a>.

Academic courses and epidemiologist training programs are welcome to contact us about use or adaptation of this material (email **contact\@appliedepi.org**).

### Citation {.unnumbered}

Batra, Neale, et al. The Epidemiologist R Handbook. 2021. <a rel="license" href="https://zenodo.org/badge/231610102.svg"><img src="https://zenodo.org/badge/231610102.svg" alt="DOI" style="border-width:0"/></a><br />

### Contribution {.unnumbered}

If you would like to make a content contribution, please contact with us first via Github issues or by email. We are implementing a schedule for updates and are creating a contributor guide.

Please note that the epiRhandbook project is released with a [Contributor Code of Conduct](https://contributor-covenant.org/version/2/0/CODE_OF_CONDUCT.html). By contributing to this project, you agree to abide by its terms.