TABLE 1—
Descriptive Statistics of Model Variables for South Dakota’s 24/7 Sobriety Project, 2001–2010
| Variable | No. | Mean (SD) | Min | Median | Max |
| Dependent | |||||
| Arrests | |||||
| DUI-1 | 7920 | 8.872 (24.812) | 0 | 2 | 272 |
| Repeat DUI | 7920 | 3.228 (8.341) | 0 | 1 | 82 |
| Domestic violence | 7920 | 2.742 (8.558) | 0 | 0 | 85 |
| Traffic crashesa | |||||
| Total | 5544 | 20.913 (44.789) | 0 | 9 | 591 |
| Men aged 18–40 y | 5544 | 7.500 (18.547) | 0 | 3 | 250 |
| Independent | |||||
| Population | 7920 | 11 905 (23 500) | 999 | 5533 | 183 048 |
| Percentage White | 7920 | 85.178 (24.026) | 5.891 | 96.178 | 99.779 |
| Men aged 18–40 y share of population | 7920 | 13.266 (3.212) | 7.601 | 12.575 | 25.190 |
| Unemployment rate | 7920 | 4.080 (1.984) | 1.400 | 3.500 | 18.600 |
| Police officers per capitab | 7920 | 14.075 (5.583) | 0 | 14.097 | 37.364 |
| VMT per capitac | 7920 | 1.601 (1.245) | 0.500 | 1.282 | 9.444 |
| Bars per capitab | 7920 | 5.688 (4.026) | 0 | 5.283 | 23.328 |
| Package stores per capitab | 7920 | 2.017 (2.212) | 0 | 1.522 | 10.828 |
| Snowfalld | 7920 | 0.106 (0.181) | 0 | 0 | 3.700 |
| Sturgis Rally | 7920 | 0.004 (0.061) | 0 | 0 | 1 |
| College in session | 7920 | 0.044 (0.206) | 0 | 0 | 1 |
Note. DUI = driving while under the influence of alcohol; DUI-1 = first-time DUI; VMT = vehicle miles traveled.
a
Traffic crashes only cover 2004–2010.
b
Per capita measure based on rate per 10 000 people.
c
VMT are based on annualized rate; miles in 10 000s.
d
Average monthly snowfall in inches.