Site | N | Mean | SD | Median | IQR |
---|---|---|---|---|---|
All sites | 5175 | 10.9 | 3.6 | 11.5 | 4.0 |
By site | |||||
 Detroit, MI | 719 | 10.6 | 3.5 | 10.3 | 3.9 |
 Chicago, IL | 1296 | 12.1 | 1.9 | 12.0 | 2.4 |
 Oakland, CA | 1229 | 10.9 | 1.8 | 11.6 | 2.2 |
 Los Angeles, CA | 209 | 17.5 | 2.3 | 18.4 | 1.6 |
 Newark, NJ | 366 | 12.4 | 4.9 | 12.8 | 5.7 |
 Pittsburgh, PA | 1356 | 8.5 | 3.8 | 7.4 | 6.8 |