This calculator calculates the positive predictive value using positive, false an outcome values.
The number of positive test results for the presence of an outcome (a) divided by the total number of positive test results (a+c).
Positive Predictive Value and Negative Predictive Value
| Positive | Negative | Total | |
| Presence | a | b | a+b |
| Absence | cd | c+d | |
| Total | a+c | b+d | a+b+c+d |
Formula:
Positive Predictive Value = a ÷ (a+c)
Where,a is The number of positive test results for an outcome
c is The number of false positive test results for an outcome