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RACE AND THE ENFORCEMENT OF DRUG DELIVERY LAWS IN ...

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Table 16. Statistical Significance of the Difference between the Racial/Ethnic<br />

Composition of Observed Drug Deliverers and Drug Delivery Arrestees<br />

Observed<br />

Deliverers (A)<br />

Delivery<br />

Arrestees (B)<br />

Downtown<br />

Difference<br />

(B-A)<br />

Z Score<br />

Black 33.3% 85.3% +52% 9.9*<br />

White 49.5% 9.3% -40.2% -8.3*<br />

Capitol Hill<br />

Black 9.1% 27.2% 18.1% 1.4<br />

White 83.6% 72.7% -10.9% -1<br />

Downtown and Capitol Hill combined<br />

Black 28.2% 77.9% 49.7% 9.6*<br />

White 57.1% 17.4% -40% -8*<br />

Sources: Nyrop, Demographic Comparisons of Two Public Venue Drug Markets in Seattle;<br />

Seattle Police Department incident reports.<br />

Note: *Indicates a statistically significant disparity (Z>2).<br />

In sum, comparisons of the black share of those observed delivering drugs<br />

downtown and in Capitol Hill indicates that blacks are over-represented among<br />

drug delivery arrestees relative to those who are actually (and visibly) engaging<br />

in drug delivery. Downtown, blacks are more than 13 times more likely to be<br />

arrested than whites engaging in the same behavior; in Capitol Hill, blacks are<br />

nearly four times more likely than whites engaging in the same behavior to be<br />

arrested. The disparity found downtown and in downtown/Capitol Hill<br />

(combined) is highly statistically significant—that is, extremely unlikely to be the<br />

result of chance.<br />

Although the observational study was conducted only downtown and in Capitol<br />

Hill, the second wave of the needle exchange survey also provides information<br />

about drug transactions that occurred in the University District. In the second<br />

wave of the needle exchange survey, needle exchange clients described 70 drug<br />

transactions that took place in the University District. Of these transactions, 22.9<br />

percent involved a black drug deliverer, 65.7 percent involved a white drug<br />

deliverer and 7.1 percent a Latino drug deliverer. By contrast, 71.4 percent of<br />

those purposefully arrested for delivery of a serious drug in the University<br />

71

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