For both first-time and repeat offenders arrested in 1997 and 1998, the one-year and two-year rates of recidivism were higher among offenders who refused the alcohol test than among all other offenders (Table 9 and Table 10). These differences were statistically significant for first-time offenders arrested in 1997 and 1998, as well as for repeat offenders arrested in 1998. However, this difference was not statistically significant for repeat offenders arrested in 1997.
With regard to first-time offenders arrested in 1998, the rates of recidivism over two years for high-BAC offenders were comparable and not statically different from the rates for offenders with BACs below .20, (6.3 percent vs. 6.7 percent after one year; 12.6 percent vs. 12.5 percent after two years) (Table 10). With regard to the recidivism rates among repeat offenders, there were no significant differences between high-BAC offenders and those with lower BACs (6.8 percent vs. 7.1 percent after 12 months; 14.1 percent vs. 14.7 percent after 24 months). These results are summarized in Table 10. For both first-time and repeat offenders, Table 10 also indicates that rates of recidivism were consistently higher among offenders who refused the alcohol test than among high-BAC offenders. These differences were statistically significant.
The patterns and the magnitude of the one-year recidivism rates by alcohol test results (Alcohol Test Refusal, BAC < .20, BAC > .20) for first-time and repeat offenders arrested in 1999 were similar to those arrested in 1998.
Rate of Recidivism for DWI Offenders Arrested in 1997, Minnesota
Cumulative Percent of Offenders with Subsequent Offense
|
First-time Offenders |
Repeat Offenders |
||||||
|---|---|---|---|---|---|---|---|
|
Alcohol Test Refusal |
Test Failure or Unknown |
Total |
Alcohol Test Refusal |
Test Failure or Unknown |
Total |
||
|
Total Cases (N) |
2,937 |
20,139 |
23,076 |
1,825 |
6,375 |
8,200 |
|
|
Months Elapsed since Arrest |
|||||||
|
% |
% |
% |
% |
% |
% |
||
|
3 |
3.3 |
2.3 |
2.4 |
3.3 |
3.0 |
3.1 |
|
|
6 |
5.0 |
4.0 |
4.1 |
5.3 |
5.0 |
5.1 |
|
|
9 |
7.2 |
5.5 |
5.7 |
7.2 |
6.9 |
7.0 |
|
|
12 |
9.1 |
7.1 |
7.3 |
9.2 |
8.9 |
9.0 |
|
|
15 |
10.5 |
8.6 |
8.9 |
12.1 |
11.2 |
11.4 |
|
|
18 |
12.4 |
10.0 |
10.3 |
14.7 |
13.0 |
13.4 |
|
|
21 |
13.7 |
11.4 |
11.6 |
17.2 |
15.1 |
15.5 |
|
|
24 |
15.0 |
12.6 |
12.9 |
18.6 |
17.1 |
17.5 |
|
Rate of Recidivism for DWI Offenders Arrested in 1998, Minnesota
Cumulative Percent of Offenders with Subsequent Offense
|
First-time Offenders |
Repeat Offenders |
|||||||
|---|---|---|---|---|---|---|---|---|
|
Alcohol Test Refusal |
BAC < .20 |
BAC > .20 |
Total* |
Alcohol Test Refusal |
BAC < .20 |
BAC > .20 |
Total* |
|
| Total Cases (N) |
2,761 |
16,182 |
4,056 |
23,996 |
1,918 |
4,326 |
1,814 |
8,440 |
|
Months Elapsed since Arrest |
||||||||
|
% |
% |
% |
% |
% |
% |
% |
% |
|
|
3 |
2.2 |
1.9 |
1.8 |
1.9 |
2.7 |
2.2 |
2.6 |
2.6 |
|
6 |
4.5 |
3.5 |
3.4 |
3.6 |
4.7 |
3.8 |
4.1 |
4.3 |
|
9 |
6.1 |
5.1 |
4.7 |
5.2 |
6.6 |
5.6 |
5.6 |
6.1 |
|
12 |
7.6 |
6.7 |
6.3 |
6.7 |
9.1 |
7.1 |
6.8 |
7.9 |
|
15 |
9.5 |
8.2 |
7.8 |
8.3 |
11.5 |
9.1 |
8.5 |
9.9 |
|
18 |
11.0 |
9.6 |
9.6 |
9.8 |
13.5 |
11.1 |
10.0 |
11.7 |
|
21 |
12.3 |
11.0 |
11.1 |
11.2 |
15.9 |
12.7 |
11.9 |
13.6 |
|
24 |
13.8 |
12.5 |
12.6 |
12.6 |
18.4 |
14.7 |
14.1 |
15.7 |
*In addition to the categories of test refusal, BAC < .20, and BAC > .20, total includes offenses with missing alcohol test results..