Table 3.

Regression of general delinquency, violence, drug use and arrest on gang affiliation trajectory groups (N=502)

Variables	General delinquency		Violence		Drug use		Arrest
	IRR (s.e.)	p-value	IRR (s.e.)	p-value	IRR (s.e.)	p-value	OR (s.e.)	p-value
GM2	1.215 (0.363)	0.515	1.967 (1.152)	0.248	1.303 (0.326)	0.290	4.364 (2.127)	0.003*
GM3	1.910 (0.545)	0.024*	3.100 (1.706)	0.041*	1.717 (0.472)	0.049*	4.556 (2.360)	0.003*
Age	0.879 (0.094)	0.226	0.825 (0.201)	0.432	0.891 (0.106)	0.332	0.827 (0.193)	0.414
African American	1.330 (0.271)	0.163	1.906 (1.080)	0.255	0.983 (0.198)	0.932	1.417 (0.705)	0.484
Hispanic	1.259 (0.333)	0.384	1.068 (0.850)	0.934	0.783 (0.222)	0.388	1.275 (0.783)	0.693
Family poverty	0.858 (0.174)	0.452	0.887 (0.428)	0.804	1.071 (0.203)	0.718	0.864 (0.343)	0.713
Self esteem	0.823 (0.186)	0.389	0.954 (0.496)	0.928	0.649 (0.139)	0.044*	0.767 (0.361)	0.574
Depression	0.823 (0.161)	0.319	0.639 (0.296)	0.333	0.943 (0.181)	0.761	0.750 (0.317)	0.496
Risky time with friends	0.964 (0.130)	0.788	1.781 (0.496)	0.038*	0.896 (0.141)	0.484	1.044 (0.302)	0.880
Parental supervision	0.888 (0.167)	0.528	1.305 (0.621)	0.576	1.069 (0.197)	0.720	0.971 (0.390)	0.941
Aggression	1.569 (0.332)	0.033*	1.852 (0.861)	0.185	1.044 (0.230)	0.845	0.954 (0.461)	0.923
Academic aptitude	1.007 (0.003)	0.030*	1.013 (0.008)	0.129	1.001 (0.003)	0.712	0.998 (0.007)	0.791
Prior general delinquency	1.059 (0.033)	0.064	--	--	--	--	--	--
Prior violence	--	--	1.339 (0.252)	0.121	--	--	--	--
Prior drug use	--	--	--	--	1.482 (0.274)	0.033*	--	--
Prior police contact/arrest	--	--	--	--	--	--	1.276 (0.576)	0.589

Note: GM indicates gang membership trajectory group.

^*p<0.05