Table 2.

Random Forest top ten most important variables for suicidal ideation, suicide plans, and suicide attempt history

Suicidal Ideation		Suicide Plans		Suicide Attempt History
Variable	Importance Value	Variable	Importance Value	Variable	Importance Value
Depression	100.00	Depression	100.00	NSSI medical treatment	100.00
Anti-suicide function	39.60	Anti-suicide function	47.45	Anti-suicide function	97.50
Anti-dissociation function	18.10	Age	40.37	Number NSSI scars	96.85
Future NSSI likelihood	16.72	Self-punishment function	37.78	Anti-dissociation function	76.65
Gender	16.13	Future NSSI likelihood	36.87	Suicide plan	70.41
Revenge function	13.50	Desire to cease NSSI	36.07	Interpersonal influence function	70.00
Autonomy function	12.23	Toughness function	34.62	Marking distress function	58.22
Self-carve words method	11.15	Gender	33.65	Time between urge and NSSI	57.20
Self-care function	9.28	Number NSSI scars	31.13	Self-cutting method	56.27
Self-punishment function	8.94	Interpersonal influence function	29.30	NSSI on hands/knuckles/fingers	55.32