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# Epicalculator

   

Outline of the package:

The package "Epicalculator" is designed for epidemiological data analysis. The functions are based on count data provided in traditional two-by-two tabular data format. They have the capability of analyzing both crude and stratified data for common caclulations done in epidemiology.

 

Table of Contents:

The package contains the following functions:

No.	Function	Description
1	my.table	creates upto 5 contingency tables of disease and exposure
2	risk	shows estimates, CI and hypothesis test results for risk ratio and risk difference
3	hp.test	hypothesis testing for crude and stratified data
4	crude.table	creates contingency tables for crude disease and person time data
5	crude.rate	calculates crude rate ratio and rate difference with CI
6	stratified.table	creates contingency tables for stratified disease and person time data
7	summary.rate	calculates summary rate ratio and rate difference with CI
8	tablex	Creates three-by-three table for further analysis
9	OR	Calculates the crude odds ratio with CI
10	ORmh	Calculates the odds ratio with Mantel-Haenszel weighting and CI
12	ARpercent	Calculates the percent attributable risk with CI
13	PAR	Calculates the population attributable risk with CI
14	PARpercent	Calculates the population attributable risk percentk with CI

Installation:

Epicalculator is currently only available from github. To install the package, run the following code:

install.packages("devtools")
devtools::install_github("PHP2560-Statistical-Programming-R/r-package-episquad-2-0")

 

Authors:

• Sadia Sharmin
• Ze Zhang
• Catrina Mueller-Leonhard

 

Contributions:

• Sadia Sharmin - Functions 1 to 3 and documentation of the package
• Ze Zhang - Functions 4 to 7 and code review
• Catrina Mueller-Leonhard - Functions 8 to 14 and documentation of the package

 

License:

GPL-2

Version:

1.0

Release date:

2017-12-16

References:

• Rothman KJ, Greenland S (1998). Modern Epidemiology. Lippincott Williams, & Wilkins, Philadelphia, pp. 271.
• Szklo M, Nieto J (2006). Epidemiology: Beyond the Basics 2nd Edition. Jones & Bartlett Learning, Burlington, MA, Appendix A.

Acknowledgments:

• Inspired from Dr. Gregory Wellenius's spreadsheet-EPI202 Calculator