The data came from felony defendants eligible for pretrial release or supervised release in Dade County (Fla.), Milwaukee County (Wisc.), and Multnomah County (Oreg.). The study produced four data bases. The Supervised Release Information system focuses on the current arrest, criminal record, socioeconomic status, ties with the community, contact with mental health and substance abuse facilities, and pretrial release decisions. The Arrest Data Base includes variables on the type and number of crimes committed, property costs to victims, personal injury costs, and court disposition for each offense. The Retrospective Data Base supplies variables on charges filed, method of release, personal characteristics, pretrial incarceration, bail, charges at disposition, sentence, total court appearances, and total failures to appear in court. The Jail Population Data Base contains monthly counts of jail population and average daily population. (Author abstract modified)