Despite the abundance of research on treatment courts, questions remain regarding their ability to reduce recidivism. The Vanderburgh County Treatment Court was examined to determine the effectiveness of the court in terms of recidivism by comparing: (a) a comparison group screened for participation who did not participate; (b) a dropout group who started but did not finish; and (c) a group who started and completed treatment court services. Unlike studies that utilize a binary measure of recidivism, we measure recidivism as the number of days until recidivism and utilize survival analysis. Findings confirm significant recidivism differences among the three groups.