https://github.com/cdcgov/nncc

An R package that provides nearest-neighbors matching and analysis of case-control data.

https://github.com/cdcgov/nncc

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An R package that provides nearest-neighbors matching and analysis of case-control data.

README.Rmd

---
output: github_document
---



```{r, include = FALSE}
knitr::opts_chunk$set(
  collapse = TRUE,
  comment = "#>",
  fig.path = "man/figures/README-",
  out.width = "100%"
)
```

# nncc




## About

The `nncc` package is an R package that provides a tool to implement 
nearest-neighbors matching for case-control data. Nearest-neighbors matching 
may improve confounding control if case-control data include too many exposures
to control in a logistic regression model.

## Project Admin

Beau B. Bruce, MD, PhD ; CDC/NCEZID/DFWED/EDEB

## Installation
``` r
# Install nncc from CRAN
install.packages("nncc")

# Or the development version from GitHub
devtools::install_github("bbbruce/nncc")
```

## Vignettes

If you have installed the `nncc` package, use `vignette("nncc")` or `browseVignettes("nncc")`.

Otherwise, refer to https://CRAN.R-project.org/package=nncc/vignettes/nncc.html.



## General disclaimer 

This repository was created for use by CDC programs to collaborate on public health related projects in support of the [CDC mission](https://www.cdc.gov/about/organization/mission.htm).  GitHub is not hosted by the CDC, but is a third party website used by CDC and its partners to share information and collaborate on software. CDC use of GitHub does not imply an endorsement of any one particular service, product, or enterprise. 

## License Standard Notice

This repository bundles code licensed under the terms of the GNU General Public License v3.0, which can be found at https://www.gnu.org/licenses/gpl-3.0.en.html, and therefore is licensed under GPL v3.0 or later.

The source code in this repository is free: you can redistribute it and/or modify it under the terms of the GNU General Public License v3.0 or (at your option) any later version.

This source code in this repository is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

The source code forked from this project will inherit its license.

## Privacy Standard Notice

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[Disclaimer](https://github.com/CDCgov/template/blob/master/DISCLAIMER.md)
and [Code of Conduct](https://github.com/CDCgov/template/blob/master/code-of-conduct.md).
For more information about CDC's privacy policy, please visit [https://www.cdc.gov/other/privacy.html](https://www.cdc.gov/other/privacy.html).

## Contributing Standard Notice

Anyone is encouraged to contribute to the repository by [forking](https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/working-with-forks/fork-a-repo)
and submitting a pull request. (If you are new to GitHub, you might start with a
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## Records Management Standard Notice

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## Additional Standard Notices

Please refer to [CDC's Template Repository](https://github.com/CDCgov/template)
for more information about [contributing to this repository](https://github.com/CDCgov/template/blob/master/CONTRIBUTING.md),
[public domain notices and disclaimers](https://github.com/CDCgov/template/blob/master/DISCLAIMER.md),
and [code of conduct](https://github.com/CDCgov/template/blob/master/code-of-conduct.md).

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