Table 2. Model performance at optimal threshold using Youden’s J index.

A 2x2 confusion matrix for the optimal threshold showing physician-month counts and B classification performance statistics. PPV is Positive Predictive Value; NPV is Negative Predictive Value. Weighted F1 was computed as defined in the scikit-learn package (1.0.1).

A				B
		Predicted		Metric	Value
		Retained	Departed	Sensitivity	0.64
Ground Truth	Retained	1523	397	Specificity	0.79
	Departed	17	30	PPV	0.07
				NPV	0.99
				Weighted F1	0.86
				Accuracy	0.79