twoBytwo app for iPhone and iPad

4.2 ( 9512 ratings )

Utilities Medical
Developer: Emmed Apps

0.99 USD

Current version: 1.1, last update: 8 years ago
First release : 13 May 2011
App size: 3.18 Mb

This simple calculator makes it easy to demonstrate the utility of diagnostic tests. Calculate sensitivity, specificity, accuracy, prevalence, likelihood ratios and positive and negative predictive values from patient outcomes. The calculator also works in reverse to demonstrate how a defined sensitivity and specificity perform with a chosen prevalence and patient numbers.