Risk (proportion) difference between two groups

2x2 Table

This is a core implementation of 'SAS' procedures for linear models - GLM, REG, ANOVA, TTEST, FREQ, and UNIVARIATE. Some R packages provide type II and type III SS. However, the results of nested and complex designs are often different from those of 'SAS.' Different results does not necessarily mean incorrectness. However, many wants the same results to SAS. This package aims to achieve that.
Reference: Littell RC, Stroup WW, Freund RJ (2002, ISBN:0-471-22174-0).

Kyun-Seop Bae

sasLM

'SAS' Linear Model

RD function

<dl> <dt>y1</dt>
<dd>positive event count of test (the first) group</dd> <dt>n1</dt>
<dd>total count of the test (the first) group</dd> <dt>y2</dt>
<dd>positive event count of control (the second) group</dd> <dt>n2</dt>
<dd>total count of control (the second) group</dd> <dt>conf.level</dt>
<dd>confidence level</dd></dl>

Arguments

Author

Risk Difference between two groups — RD

<dl>

 <dt>y1</dt>
<dd>positive event count of test (the first) group</dd>

 <dt>n1</dt>
<dd>total count of the test (the first) group</dd>

 <dt>y2</dt>
<dd>positive event count of control (the second) group</dd>

 <dt>n2</dt>
<dd>total count of control (the second) group</dd>

 <dt>conf.level</dt>
<dd>confidence level</dd>

</dl>

RD: Risk Difference between two groups

Description

Usage

Value

Arguments

Author

Details

See Also

Examples