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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 2.

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

Variable Unclustered High Use Clusters Chi2/F- value Sig. (*P<0.5, ** P<0.01, *** P<0.001)
N 2979 346
Off Premise Alcohol Outlets 16.4% 66.2% 527.700 ***
Moved Within County 23.9% 93.6% 707.977 ***
Population in Rental Units 22.0% 100.0% 896.601 ***
Composite Poverty Index 27.3% 74.6% 385.681 ***
Cirrhosis Death Rate 21.2% 32.4% 314.966 ***
Trauma Death Rate 9.9% 34.7% 620.058 ***
Never Married 23.5% 91.9% 688.702 ***
Suicide Rate 7.9% 80.3% 1254.261 ***
Low Grade 8 English Performance 22.8% 91.9% 713.454 ***
Juvenile Violent Crime Arrest Rate 21.7% 97.1% 848.950 ***
STD Infection Rate (Gonorrhea) 24.6% 97.1% 746.350 ***
Criminal Mischief Rate 23.4% 91.0% 675.924 ***
Violent Crime Arrest Rate 25.2% 97.4% 735.752 ***
Adolescent Pregnancy Rate 27.3% 74.6% 349.868 ***