Table 3. Predicting high vs. non-high risk group of SPS using the Chinese suicide dictionary and the SCLIWC.

	Precision	Recall	F-measure
1 month
Suicide dictionary	0.60	0.40	0.48
SCLIWC	0.43	0.40	0.41
2 months
Suicide dictionary	0.49	0.64	0.56
SCLIWC	0.48	0.48	0.48

Notes.

N = 788.

Precision is the fraction of retrieved instances that are relevant.

Recall is the fraction of relevant instances that are retrieved.

F-Measure is the harmonic mean of precision and recall.