TABLE 3.

Performance metrics.

Performance metrics	Definition	Formula
Accuracy	The ratio of the number of correctly predicted observations to total observations	$\frac{TP+TN}{TP+FP+FN+TN}$
Sensitivity or recall	The proportion of positives that are correctly identified as positive by the model	$\frac{TP}{(FN+TP)}$
Specificity	The proportion of negatives that are correctly identified as negative by the model	$\frac{TN}{(TN+FP)}$
Precision	The proportion of true positives out of all predicted positives	$\frac{TP}{(TP+FP)}$
F1 Score	The harmonic mean of precision and recall	$2\frac{precision\times recall}{precision+recall}$