Table 4.

Mean Number of Acts of Aggression and Violence by Time, Program, and Grade Level

	Intervention Program		Control Program
	EJN MS n=44	EJN HS n=52	TMA MS n=65	TMA HS n=62
Non-Physical Aggression
Three Months^	24.3 (.4)+	15.8 (.3)	16.4 (.3)	13.5 (.3)
Nine Months^	16.5 (.4)*,+	18.6 (.3)+++	15.9 (.3)+++	9.3 (.3) **
Physical Violence
Three Months^	14.9 (.3)+	10.6 (.2)	10.5 (.2)	9.4 (.2)
Nine Months^	10.5 (.3)+	11.2 (.2)++	8.6 (.2)+	6.1 (.2)*

EJN= El Joven Noble, TMA= Teen Medical Academy, MS= Middle School, HS= High School

^{^} Mean (SEM)

^*Time Effect (3 months vs. 9 months):

^*p<.05,

^**p<.01

⁺Program by Grade Level Effect as compared to TMA HS:

⁺p<.05,

⁺⁺p<.01,

⁺⁺⁺p<.001