Table 3.

Bivariate analysis of violence classes based on demographics, protective, and risk factors

	Class 2 PA	Class 2 PAPV	Class 3 MDV
	(n = 362)	(n = 129)	(n = 203)		χ2	χ2	χ2
	(52.2%)	(18.6%)	(29.3%)		Class 1 vs.	Class 1 vs.	Class 2 vs.
Variable	M (SD) /n (%)	M (SD) /n (%)	M (SD) /n (%)	F	Class 2	Class 3	Class 3
Demographics
Age, in years	16.7 (1.4)	16.9 (1.3)	16.8 (1.3)	2.31 (0.11)
Femaleabc	199 (55.0%)	45 (34.9%)	144 (70.9%)		15.35***	15.35***	41.81***
African Americanbc	185 (51.1%)	71 (45.0%)	140 (69.0%)		1.44	18.94***	18.88***
Public assistancebc	201 (55.8%)	64 (49.6%)	131 (64.9%)		1.48	4.35*	7.55**
Protective factors
Passing grades in school	182 (50.3%)	64 (49.6%)	105 (51.7%)		0.02	0.11	0.14
Live with parents	292 (80.9%)	109 (84.5%)	153 (75.7%)		0.83	2.07	3.66
Parental monitoringabc	24.0 (5.2)	23.1 (4.8)	22.0 (5.5)	9.47***
Risk factors
Injured in a fightab	68 (18.8%)	42 (32.6%)	68 (33.5%)		10.38**	15.41***	0.03
Weapon carriageabc	136 (37.6%)	52 (40.3%)	129 (63.6%)		0.30***	35.24***	17.17***
Friend delinquencyabc	7.3 (4.5)	9.2 (5.0)	10.4 (5.7)	25.88***
Family Conflict Scaleabc	3.0 (1.4)	3.4 (1.5)	3.9 (1.9)	18.78***
Alcohol consumption (AUDIT-C)	3.3 (2.7)	3.7 (2.9)	3.8 (3.0)	10.66
Alcohol misuse (POSIT)ab	184 (50.8%)	77 (59.7%)	148 (72.9%)		3.00	26.16***	6.31**
Marijuana usebc	224 (61.9%)	80 (62.0%)	153 (75.4%)		0.00	10.66**	6.72**

Notes: PA = peer aggression; PAPV = peer aggression + peer victimization; MDV = multiple domains of violence; AUDIT-C = Alcohol Use Disorders Identification Test—Consumption; POSIT = Problem Oriented Screening Instrument for Teenagers.

^aClass 1 and Class 2 are different;

^bClass 1 and Class 3 are different;

^cClass 2 and Class 3 are different.

^*p < .05;

^**p < .01;

^***p < .001.