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Table 3 Violence index by city YRBS weighted data for freshman and sophomores from 2007 to 2013

From: Gun carrying among freshmen and sophomores in Chicago, New York City and Los Angeles public schools: the Youth Risk Behavior Survey, 2007-2013

Violence Index Variables Chicago
N = 198,422
New York City
N = 582,802
Los Angeles
N = 356,225
Carried any weapon in the last 30 days** 21.11% 12.48% 14.95%
Carried gun in the last 30 days** 8.89% 4.09% 6.03%
Carried any weapon to school in the last 30 days* 7.94% 5.65% 5.82%
Feeling unsafe at school in last 30 days* 12.67% 9.53% 9.05%
Threatened or injured at school in last 12 months** 13.40% 7.56% 10.40%
In physical fight in last 12 months** 46.70% 35.94% 36.70%
In physical fight at school in last 12 months** 25.26% 17.07% 20.48%
Bullied at school in last 12 months* 13.07% 13.98% 16.81%
Electronically bullied in last 12 months 10.38% 11.72% 10.59%
Risk Category
 No violence (0 violence index variables)** 31.75% 25.66% 49.36%
 Low violence (1-3 violence index variables)** 57.01% 43.25% 57.39%
 High violence (4 or more violence index variables)** 11.24% 8.18% 8.47%
  1. *p < 0.05
  2. **p < 0.001