# odds.and.proportions: Interconvert odds and proportion values In pegeler/samplesizeCMH: Power and Sample Size Calculation for the Cochran-Mantel-Haenszel Test

## Description

These functions will create either odds for a given probability, probability for a given odds, calculate the odds ratio between two probabilities, or calculate effect size (raise a probability by theta)

## Usage

 ``` 1 2 3 4 5 6 7 8 9 10 11``` ```prop2odds(p) odds2prop(o) effect.size(p, theta) props2theta(p1, p2) rr2theta(rr, p1, p2) theta2rr(theta, p1, p2) ```

## Arguments

 `p, p1, p2` Proportion vector. `o` Odds vector. `theta` Odds ratio vector. `rr` Relative risk vector (`p1 / p2`).

## Value

A numeric vector.

## Author(s)

Paul W. Egeler, M.S.

## Examples

 ``` 1 2 3 4 5 6 7 8 9 10 11 12``` ```# Convert proportions of 0 through 1 to odds props <- seq(0,1,0.1) prop2odds(props) # Convert odds to proportions odds2prop(1:3) # Raise a proportion by an effect size theta effect.size(0.5, 2) # Find the odds ratio between to proportions props2theta(0.75, 0.5) ```

pegeler/samplesizeCMH documentation built on May 15, 2018, 9:31 p.m.