Table 12.

Best 5 discriminant models for differentiating between the top 3 mental health presenting problems (anxiety, depression, and stress).

Number of predictors and predictor names			Cohen κ coefficient		General accuracy (%)		Average accuracy (%)
1
	Analytical thinking score	0.12		49.2		71.6
	Cognitive processes	0.12		49.2		52.6
	Affect	0.12		48.6		33.3
	First-person singular pronouns	0.09		47.2		83.3
	Social processes	0.09		46.9		N/Aa
2
	Analytic thinking score+first-person singular pronouns	0.14		50.3		75.1
	Analytical thinking score+past focus	0.14		50.3		74.2
	Analytical thinking score+cognitive processes	0.14		50		70.6
	First-person singular pronouns+cognitive processes	0.14		50		54.2
	First-person singular pronouns+past focus	0.14		50		57.1
3
	First-person singular pronouns+negative emotions+functional	0.18		50.6		66.8
	Analytical thinking score+past focus+present focus	0.17		52		71.7
	Analytical thinking score+emotional tone score+drives	0.17		51.4		77.5
	Emotional tone score+cognitive processes+drives	0.17		51.4		66.7
	First-person singular pronouns+cognitive processes+present focus	0.17		51.4		56.2
4
	Negative emotions+social processes+functional+focus present	0.21		50.8		68.7
	Negative emotions+affect+drives+past focus	0.21		48.9		60.6
	Analytical thinking score+affect+cognitive processes+present focus	0.2		52		64.6
	Word count+analytical thinking score+causation+past focus	0.19		52		66.1
	Word count+analytical thinking score+causation+present focus	0.19		52		62.7
21b	All predictors	0.09		43.3		46.3

^aN/A: not applicable.

^bThe best models with 5-20 predictors (total of 80 items) have lower Cohen κ coefficient, general accuracy, and average accuracy, thus are omitted.