Calculates measures of diagnostic test accuracy, including sensitivity (True Positive Rate) and specificity (True Negative Rate).
Start with your values, or try a preset.
Enter True Positives (TP), False Negatives (FN), True Negatives (TN), and False Positives (FP) in the units shown.
Read Accuracy, Negative Predictive Value (NPV), Positive Predictive Value (PPV), Specificity (True Negative Rate), and Sensitivity (True Positive Rate) in the results panel. Results update as you change the inputs.
Choose a preset to load an example, then adjust the values for your situation.
See the inputs and their calculated results.
True Positives (TP): 80; False Negatives (FN): 10; True Negatives (TN): 70; False Positives (FP): 5
Accuracy: 0.9090909091 %; Negative Predictive Value (NPV): 0.875 %; Positive Predictive Value (PPV): 0.9411764706 %; Specificity (True Negative Rate): 0.9333333333 %; Sensitivity (True Positive Rate): 0.8888888889 %
True Positives (TP): 50; False Negatives (FN): 20; True Negatives (TN): 60; False Positives (FP): 10
Accuracy: 0.7857142857 %; Negative Predictive Value (NPV): 0.75 %; Positive Predictive Value (PPV): 0.8333333333 %; Specificity (True Negative Rate): 0.8571428571 %; Sensitivity (True Positive Rate): 0.7142857143 %
True Positives (TP): 20; False Negatives (FN): 30; True Negatives (TN): 80; False Positives (FP): 5
Accuracy: 0.7407407407 %; Negative Predictive Value (NPV): 0.7272727273 %; Positive Predictive Value (PPV): 0.8 %; Specificity (True Negative Rate): 0.9411764706 %; Sensitivity (True Positive Rate): 0.4 %
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