Table 2. Machine learning predictions: Averaged accuracy of 20-fold cross validation.

Utterances (number)	Model	Accuracy
All (1497)	SVM	0.576 ± 0.013
	XGBoost	0.566 ± 0.013
Transcribed (737)	SVM	0.597 ± 0.018
	XGBoost	0.580 ± 0.018
Written (760)	SVM	0.603 ± 0.018
	XGBoost	0.531 ± 0.018