Table 3.

Accuracy, sensitivity, and specificity of the model (%).

	Internal test			External test
	Accuracy	Sensitivity	Specificity	Accuracy	Sensitivity	Specificity
Primary	96.7	96.7	96.7	86.7	90.0	85.0
Mixed	97.5	95.0	100.0	95.3	95.7	95.0
Permanent	93.3	93.3	93.3	86.7	80.0	95.0
Total	96.2	95.4	96.9	89.8	87.9	91.7