Sensitivity and Specificity Calculator
Sensitivity and specificity are terms used to describe the value of tests. This calculator will determine these values based on true positives, false positives, true negatives, and false negatives.
| Disease Present | No Disease | |
| Positive test | a |
b |
| Negative test | c |
d |
Sensitivity = a/(a+c)
Specificity = d/(b+d)
Positive Predictive Value = a/(a+b)
Negative Predictive Value = d/(c+d)