Table 1.
City Characteristics by Intervention Condition, Mean (SD) or Percent
| Variable | Total sample (N=24) |
Intervention (n=12) |
Control (n=12) |
|---|---|---|---|
| Population size | 103,132 (45,555) | 104,512 (44,484) | 101,751 (48,540) |
| Percent ethnic minority | 27.32 (11.69) | 26.88 (10.62) | 27.76 (13.15) |
| SES factor scorea | 0.0 (1.0) | 0.17 (0.81) | −0.17 (1.17) |
| SVN/total crashes (%)b 15–30 year olds | |||
| Pre-intervention (2010–2012) | 7.15 | 6.70 | 7.62 |
| Post-intervention (2013–2016) | 7.16 | 6.32 | 8.00 |
a
Standardized factor score based on percent of residents living above poverty, percent employed, percent with a college degree, and median household income.
b
SVN/total crashes is the percentage of all motor vehicle crashes that were single vehicle night-time crashes.
SVN, single vehicle night-time.