Table 2. Classification results using the 50% probability threshold.

	Training Sample
class	ALS	HC
Predicted class			Sensitivity	83.34%
ALS	50	24	Specificity	52.00%
HC	10	26	Accuracy	69.09%
	Validation Sample
class	ALS	HC
Predicted class			Sensitivity	90.47%
ALS	19	6	Specificity	62.50%
HC	2	10	Accuracy	78.37%
	Follow-up Validation Sample
class	ALS	HC
Predicted class			Sensitivity	85.71%
ALS	18	5	Specificity	66.67%
HC	3	10	Accuracy	77.77%