Supervised Learning for Suicidal Ideation Detection in Online User Content

Table 3

Linguistic statistical information extracted by LIWC.

Average word count	Suicide	Nonsuicide
Personal nouns	30.01	14.6
Quantifiers	3.78	3.37
Positive emotion	5.61	7.84
Negative emotion	11.12	4.89
Anxiety	1.46	0.55
Sadness	3.86	0.63
Past focus	6.78	6.27
Present focus	34.81	17.86
Future focus	4.06	1.76
Family	1.07	0.82
Friend	1.02	0.78
Female references	0.95	1.35
Male references	1.03	2.40
Work	2.50	3.92
Money	0.60	1.38
Death	4.81	0.61
Swear words	1.47	1.62