The sociodemographic variables studied here included gender, age, marital status, educational attainment, and race, while prior criminal history encompassed prior probation, prior incarceration, and number of felony commitments. Probation sentence variables were conviction offense, length of probation term, supervision level at time of termination, and behavioral and financial conditions of probation. The study population consisted of 2,508 adult felony probationers who had been given probation terms exceeding 2 years and whose cases had been terminated in the specified time period by completion of the probation term, revocation, or administrative closure. The results supported hypotheses that females, married probationers, and probationers with higher levels of education would have more success than their counterparts. Hypotheses which predicted relationships between age and race, and probation outcome were not supported. Full- time employment and adequate wages also predicted a successful probation outcome. Prior felonies, prior probation, and prior institutional commitments were significantly related to probation failure, as predicted. The strongest predictors of probation outcome were gender, marital status, work status, prior felonies, and conviction offense. 5 tables and 31 references