Table 5.

The performance of models obtained from all-epochs features and semester-level features to detect loneliness level and change in loneliness.

Measure	Loneliness level						Change in loneliness
	All-epochs features, baseline = 58.5%			Semester-level features, baseline = 58.5%			All-epochs features, baseline = 69.3%				Semester-level features, baseline = 69.3%
	Average	HLa	LLb	Average	HL	LL	Average	DLc	ILd	ULe	Average	DL	IL	UL
Accuracy, %	80.2	—f	—	74.8	—	—	79.2	—	—	—	88.4	—	—	—
Precision, %	80.3	81.1	79.5	74.6	78.6	70.6	70.2	53.3	71.4	85.7	90.0	90.9	91.6	87.6
Recall, %	80.1	76.9	83.3	74.8	74.6	75.0	67.7	40	71.4	91.6	82.6	75.8	73.3	98.7
F1g, %	80.1	78.9	81.3	74.6	76.5	72.7	68.5	45.7	71.4	88.5	81.0	68.9	81.5	92.8
MCCh	0.6	—	—	0.5	—	—	0.6	—	—	—	0.7	—	—	—

^aHL: high loneliness.

^bLL: low loneliness.

^cDL: decreased loneliness.

^dIL: increased loneliness.

^eUL: unchanged loneliness.

^fData not applicable.

^gF1: harmonic mean of precision and recall.

^hMCC: a measure of quality of binary classification.