Table 7.

Chi-Square Test of Differences in Commercial Zoning Between Risky/Not Risky and Safe/Not Safe Locations by Substance Use Classification

			Commercial	Industrial	Residential	Total
Substance	Risky	Observed	110	21	109	240
Users	Risky	Expected	97	21	122	240
	Not Risky	Observed	59	11	58	128
	Not Risky	Expected	72	11	45	128
	Total		169	32	167	368
	Pearson Chi-Square		9.08**
	Safe	Observed	140	26	138	304
	Safe	Expected	146	27	131	304
	Not Safe	Observed	29	6	29	64
	Not Safe	Expected	23	5	36	64
	Total		169	32	167	368
	Pearson Chi-Square		3.77
Non-Substance Users	Risky	Observed	140	26	229	395
	Risky	Expected	123	22	250	395
	Not Risky	Observed	44	8	71	123
	Not Risky	Expected	61	12	50	123
	Total		184	34	300	518
	Pearson Chi-Square		19.80***
	Safe	Observed	138	26	225	389
	Safe	Expected	163	27	199	389
	Not Safe	Observed	46	8	75	129
	Not Safe	Expected	21	7	101	129
	Total		184	34	300	518
	Pearson Chi-Square		30.56***

^*p<0.05

^**p<0.01

^***p<0.005