Table 4. Bivariate Analyses of the Association of Mental Health Disturbance and Place based Social Network Quality to Substance Use by Gender and Age (n=301).

	Female				Male
	13-16 (n=78)		17-20 (n=105)		13-16 (n=58)		17-20 (n=60)
	Non Users (n=57)	Users (n=21)	Non Users (n=44)	Users (n=61)	Non Users (n=38)	Users (n=20)	Non Users (n=12)	Users (n=48)
PTSD	37.0	46.1	51.0	54.4	26.9	34.4	29.2	30.8
	U = 460		U = 1255		U = 281		U = 273
School Problems	37.3	43.4	37.1	38.5	25.6	35.7	25.1	24.3
	U = 494		U = 633		U = 233*		U = 139
Home Place Network	41.9	32.9	57.3	49.8	30.6	27.4	33.3	29.7
	U = 461		U = 1152		U = 338		U = 254
Important Place Network	42.8	30.3	60.48	47.6	32.3	24.1	38.4	28.5
	U = 406*		U = 1015*		U = 273		U = 192
Safe Place Network	44.0	27.1	59.2	48.5	29.5	29.4	36.9	28.8
	U = 338**		U = 1068		U = 378		U = 210
Risky Place Network	44.3	26.2	62.7	46.0	32.9	22.9	45.1	26.8
	U = 320**		U = 915**		U = 249*		U = 112***
Favorite Place Network	44.6	25.5	59.2	48.5	32.6	23.5	39.6	28.2
	U = 304***		U = 1068		U = 260*		U = 178*

Mann-Whitney U analyses: Mean ranks and U values

^*p<.05

^**p<.005

^***p<.001