Test of Difference in Arrest Proportions for Misdemeanors


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Test of Difference in Arrest Proportions for Misdemeanors

The proportion of misdemeanor arrests for girls was significantly higher for all offense categories, except noncompliance. Table 21 provides the results of Z-test of proportions analyses for misdemeanor arrests in 2007.There was no significant difference between the proportion of girls' Class C status offense arrests and boys'.

Table 21
Results of Z-Test for difference in proportions of misdemeanor arrests by offense category, 2007

Offense category Female proportion Male proportion Z-score Confidence level (a) P-value Significant
Person 80.1% 69.2% 12.29 99% pLess Than.1% Yes
Sex 87.5% 30.6% 4.71 99% pLess Than.1% Yes
Weapons 66.0% 39.6% 5.10 99% pLess Than.1% Yes
Property 75.1% 61.7% 14.01 99% pLess Than.1% Yes
Drug 59.4% 41.6% 7.85 99% pLess Than.1% Yes
Noncompliance 64.7% 70.0% -1.52 99% pLess Than.5% No
Status* 11.7% 9.2% 1.42 99% pLess Than.5% No
Other 60.3% 32.2% 24.19 99% pLess Than.1% Yes
All arrests 71.8% 54.4% 32.00 99% pLess Than.1% Yes

* Status offense proportions compared proportion of Class C misdemeanors.
Source: Authority's CHRI Ad Hoc datasets

Reporting misdemeanor arrests for juveniles to CHRI by law enforcement is voluntary. As a result, arrest offense class disparities are a conservative estimate.


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