The prevalence of a high violence index was further stratified by city as shown in Table 3. Chicago had a much higher prevalence of high violence index respondents than both New York City and Los Angeles (11.24% vs. 8.18% vs. 8.48%, p < 0.001).
The city with the highest percentage of individuals in the high violence index risk category was Chicago.
A high violence index (4 or more affirmative responses) was representative of 8.47% of the freshman and sophomores across cities.
By 2010, offenders aged 45 54 had higher violence rates than offenders of the same age in 1994.
No violence was associated with a total violence count of zero, low violence was associated with a total violence count of one to three and high violence was associated with a total violence count of four or more.
There was a higher likelihood for gun carrying among males compared to females, among non-Hispanic Blacks, and among those who reported a higher violence index.
When multivariable Poisson regression analysis was conducted using violence index categories, the high violence index category (> 3) conferred a 6.51 times increased likelihood for gun carrying compared to those in the low violence index category (IRR 6.51, CI 5.68-7.46).
This includes intelligence-based policing strategies, which would include special operations on knife-carrying and targeted use of stop-and-search in high violence areas.
Multivariable Poisson regression estimates showed increased likelihood for gun carrying among males (IRR 1.41, CI 1.27-1.58), amonon-Hispanicnic Blacks (IRR 1.26, CI 1.07-1.48), amongmong those who reported a higher violence index.
Being part of the high violence index category (> 3) conferred a 6.5 times increased likelihood for gun carrying compared to those in the low violence index category and, if analyzed continuously, each additional violence index was associated with 1.74 times increased likelihood for gun carrying.
