Calculates diagnostic test positive predictive value and 95 percent confidence intervals for data from a 2x2 table

Provides measures of effect sizes for summarized continuous variables as well as diagnostic accuracy statistics for 2x2 table data. Includes functions for Cohen's d, robust effect size, Cohen's q, partial eta-squared, coefficient of variation, odds ratio, likelihood ratios, sensitivity, specificity, positive and negative predictive values, Youden index, number needed to treat, number needed to diagnose, and predictive summary index.

Mike Malek-Ahmadi

ClinSigMeasures

Clinical Significance Measures

ppv function

<dl>
 <dt>Cell1</dt>
<dd>Value for cases with a positive test</dd>
 <dt>Cell2</dt>
<dd>Value for controls with a positive test</dd>
 <dt>Cell3</dt>
<dd>Value for cases with a negative test</dd>
 <dt>Cell4</dt>
<dd>Value for controls with a negative test</dd>
</dl>

Arguments

Author

Positive Predictive Value Calculation From a 2x2 Table — ppv

<dl>


 <dt>Cell1</dt>
<dd>Value for cases with a positive test</dd>


 <dt>Cell2</dt>
<dd>Value for controls with a positive test</dd>


 <dt>Cell3</dt>
<dd>Value for cases with a negative test</dd>


 <dt>Cell4</dt>
<dd>Value for controls with a negative test</dd>
</dl>

ppv: Positive Predictive Value Calculation From a 2x2 Table

Description

Usage

Value

Arguments

Author

References

Examples