Selection of Subjects

Cover Page Technical Report Technical Summary Acknowledgements List of Tables Introduction Study Sites Observational Study Focus Group Research Conclusions References

Selection Criteria Protocol Selection of Subjects Identification of Eligible Subjects Case Records Description of Subjects Subjects' Prior Driving Records Description of Current DWI/OWI Offense License Reinstatement and Subsequent Driving Record Results of Observations Travel During Suspension Period Travel During vs. After Suspension Factors Affecting Driving While Suspended Circumstances of Observed Travel' Case Examples Subjects in both sites met the following criteria: convicted of a "standard" first-time alcohol-impaired driving offense 21 years of age or older in-state residence within a 50-mile radius of Milwaukee or Bergen County In addition, the dates of the license suspension periods for the subjects needed to be such that the subjects could be observed near the end of the suspension period and if their license was reinstated, again shortly after the end of the suspension. In Wisconsin, this consideration had the effect of excluding most persons who refused the BAC test, as Wisconsin imposes a one-year license revocation for a test refusal. Persons with current convictions deriving from very old violation dates (for example, 1983) also were excluded. In addition, a few subjects were excluded because observations could not be conducted. This included, for example, persons who became incarcerated or who moved out-of-state. Subjects residing in large apartment complexes were excluded because the investigator would have been unable to determine whether a person exiting or entering a building with several apartments was the subject. Finally, as noted above, it was necessary to exclude Milwaukee offenders who obtained an occupational license.