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. Author manuscript; available in PMC: 2010 Aug 16.
Published in final edited form as: Comput Stat. 2009;1(2):167–186. doi: 10.1002/wics.21

Table 1.

Characteristics for Marijuana Use Clusters: Populations in Areas of High Risk (Zip Codes in Highest Risk Quartile)

Variable Unclustered High Use Cluster Low Use Cluster Chi2/F- value Sig. (*P<0.5, ** P<0.01, *** P<0.001)
N 1316 1301 708
Off Premise Alcohol Outlets 3.4% 48.7% 5.8% 1364.768 ***
Moved Within County 4.7% 70.7% 7.5% 1831.294 ***
Population in Rental Units 5.3% 71.6% 0.0% 2129.910 ***
Composite Poverty Index 6.6% 73.2% 4.4% 1944.086 ***
Cirrhosis Death Rate 4.9% 42.8% 17.4% 1000.327 ***
Trauma Death Rate 1.9% 28.6% 2.5% 1033.625 ***
Never Married 4.1% 73.6% 1.0% 2208.584 ***
Suicide Rate 9.0% 28.2% 4.1% 784.529 ***
Low Grade 8 English Performance 4.3% 69.3% 5.4% 1873.998 ***
Juvenile Violent Crime Arrest Rate 4.9% 66.2% 7.8% 1845.117 ***
STD Infection Rate (Gonorrhea) 6.2% 73.6% 4.4% 2288.787 ***
Criminal Mischief Rate 6.8% 68.6% 4.4% 1975.021 ***
Violent Crime Arrest Rate 4.6% 78.9% 0.0% 2686.438 ***
Adolescent Pregnancy Rate 6.6% 73.2% 4.4% 1847.530 ***