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. Author manuscript; available in PMC: 2013 Mar 11.
Published in final edited form as: Am J Psychiatry. 2009 Feb 17;166(4):418–426. doi: 10.1176/appi.ajp.2008.08070976

TABLE 1.

Predictors of Suicidal and Nonsuicidal Adverse Eventsa

No Event (N=266) Ideation or Attempt Only (N=37) NSSI only (N=20) Ideation or Attempt and NSSI (N=11)
Median Range Median Range Median Range Median Range P2
Income (in thousands $) 60 0-250 85 28-500 59 14-100 75 35-81 KW: χ23=7.19, P=.07
Mean SD Mean SD Mean SD Mean SD P
Children's Depression Rating Scale 58.1a 103 63.2b 11.0 60.5a,b 10.5 57.7a,b 7.0 F(3, 330)=2.82, P=.04b
Clinical Global Impressions Severity 4.4a 0.6 4.8b 0.7 4.5a,b 0.8 4.3a,b 0.5 F(3, 329)=3.26, P=.02c
Children's Global Assessment Scale 51.1 7.6 48.5 8.2 48.6 8.2 48.4 5.8 F(3, 327)=2.12, P=.10
Beck Depression Inventory 19.3a 11.7 26.8b 11.6 23.2a,b 13.3 23.6a,b 14.7 F(3,327)=4.96, P=.002d
Beck Hopelessness Scale 10.1a 5.7 12.9b 4.8 10.4a,b 5.5 13.5a,b 4.2 F(3,323)=3.99, P=.008e
Severity of Drug Use 8.7a 16.2 20.7b 26.1 19.0b 25.3 17.0a,b 23.2 KW: χ23=13.06, P=.005g
Suicidal Ideation Questionnaire 38.3a 20.7 56.0b 22.4 54.9b 26.9 48.5a,b 25.1 F(3,324)=10.47, P<.001i
Suicide Severity Rating Scale – Ideationh 0.5a 0.8 1.1b 1.2 1.5b 1.4 1.1a,b 1.2 KW: χ23=17.64, P=.001i
Suicide Severity Rating Scale – Behaviorh 0.0 0.3 0.0 0.2 0.4 1.0 0.0 0.0 KW: χ23=6.64, P=.08
Conflict Behavior - Adolescent 8.1a 6.1 12.3b 5.0 10.7a,b 7.4 13.0a,b 5.3 F(3, 323)=7.57, P<.001j
N % N % N % N % P
Oppositional/Conduct 27 10.3 5 13.5 0 0.0 1 9.1 Fisher's exact test, P=.43
Drug Use 134 51.1a 27 73.0b 10 50.0a,b 8 72.7a,b χ23=7.90, P=.05j
History of Suicide Attempts 59 22.3 10 27.0 6 30.0 4 36.4 Fisher's exact test, P=.50
History of NSSI 83 31.8a 17 47.2a,b 14 70.0b,c 11 100.0c Fisher's exact test, P<.001l
Physical Abuse 30 11.5 6 16.2 4 21.1 3 30.0 Fisher's exact test, P=.15
Sexual Abuse 41 15.8 9 24.3 3 15.8 2 20.0 Fisher's exact test, P=.56
Physical or Sexual Abuse 56 21.6 12 32.4 7 36.8 4 40.0 Fisher's exact test, P=.12
a

Values with different subscripts are statistically significantly different.

b

No event versus ideation, or attempt only: p=0.03.

c

No event versus ideation or attempt only: p=0.02.

d

No event versus ideation or attempt only: p=0.002.

e

No event versus ideation or attempt only: p=0.02.

f No event versus ideation or attempt only: p=0.002; no event versus nonsuicidal self-injury only: p=0.05.

g

No event versus ideation or attempt only: p<0.001; no event versus nonsuicidal adverse event only: p=0.007.

h

Total N=153: no event (N=103), ideation or attempt only (N=23), nonsuicidal self-injury only (N=18), nonsuicidal self-injury and suicidal adverse event (N=9).

i

No event versus ideation or attempt only: p<0.004; no event versus nonsuicidal self-injury only: p<0.001.

j

No event versus ideation or attempt only: p=0.001.

k No event versus ideation or attempt only: p=0.01.

l

No event versus nonsuicidal self-injury only: p<0.001; no event versus nonsuicidal self-injury and suicidal adverse event, p<0.001; ideation or attempt only versus nonsuicidal self-injury and suicidal adverse event: p=0.001.