Disproportionality of Girls' Involvement in Less Serious Offenses


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Disproportionality of Girls' Involvement in Less Serious Offenses

To examine disproportionality in the seriousness of the offenses, proportionality ratios (PRs) were calculated. This calculation takes the ratio of the proportion of arrests, detainments, or incarcerations for a specific offense class for each gender. To obtain further explanation of these calculations, please see Appendix C. Similar to the relative rate ratio, a PR of 1 indicates equal proportional representation. A PR below 1 indicates an under-representation of girls. As with the RRR, available data do not allow for an individual to be linked across different stages and the PR for each stage must be interpreted independent of the other stages. Reporting misdemeanor arrests for juveniles to CHRI by law enforcement is voluntary. As a result, arrest offense class disparities are a conservative estimate.

As previously noted, the proportion of girls' juvenile justice system involvement in Illinois was higher for misdemeanors and less serious offenses than their male counterparts. Overall, girls' arrests were 22 percent more likely to be for misdemeanors and 42 percent less likely to be for felonies than boys'. The girls' proportion of arrests was 13 percent more likely to be for unknown or unclassified offenses and 26 percent more likely to be for a petty offense. Table 18 depicts the girls' proportion ratios for arrests by gender and offense class for 2007.

Table 18
Girls' proportion ratios for arrests by offense class and gender, 2007

Girls Boys
Offense Class Total Proportion PR Total Proportion PR
Misdemeanor 6,978 0.662 1.22 20,400 0.544 -
Felony 1,964 0.186 0.58 12,052 0.322 -
Unknown/ Unclassified 1,506 0.143 1.13 4,738 0.126 -
Petty 100 0.009 1.26 282 0.007 -
Total 10,548 1.00 4 37,472 1.00 -

Source: Authority's CHRI Ad Hoc datasets

In 2004, girls' commitments to corrections were 166 percent more likely to be for a misdemeanor offense than boys' and 28 percent less likely to be for a felony. Table 19 shows the girls' proportion ratios for commitments to IDOC by gender and offense class for 2004.

Table 19
Girls' proportion ratios for commitments to IDOC by offense class and gender, FY04

Girls Boys
Offense Class Total Proportion PR Total Proportion PR
Misdemeanor 73 0.378 2.66 218 0.142 -
Felony 120 0.622 0.72 1,317 0.857 -
Unknown/ Unclassified 0 0 0 1 0 -
Petty - - - - - -
Total 193 1.00 3 1,536 1.00 -

Source: Illinois Department of Corrections


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