This tool allows you to calculate point estimates and confidence intervals for measures of diagnostic test performance using counts of test positive and test negative and outcome positive and outcome negative individuals entered into a 2 x 2 table. The animations help you to understand how each diagnostic test performance measure is calculated and how each is interpreted.
Enter your data into the table below to start. Click on the i icons to view an animation to explain how each measure is calculated.
Enter data
| Outcome + | Outcome - | Total | |
|---|---|---|---|
| Test + |
|
|
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| Test - |
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| Total |
