The Parole Partnership Program (P3) was established in San Diego when the California Department of Corrections allowed each of three selected counties to design their own programs to provide substance abuse treatment to parolees being released from State prisons. Recovery advocates screen the referrals to the program to match them with the appropriate services. P3 participants are eligible for 180 units of service, which can be 180 days in a residential setting, 180 sessions in an outpatient facility, or a combination of any of the types of services. Other services offered include detoxification; short-term residential treatment; long-term residential treatment; and "sober living," which is usually an apartment or other living situation with other people in recovery. There is also a transition component that provides outpatient services while a person is awaiting an opening in the program. Computerized records from the San Diego County Alcohol and Drug Services were used to examine the entire population of P3 participants between December 1991 and December 1996. Because of missing data, the final sample for the hierarchical logistic regression analysis was 1,191. Those who completed the program were more likely to be women who had not used drugs 30 days before program admission, had fewer prior treatment experiences, remained in the program longer, and had secured employment and stable living arrangements by the time of discharge. There were no differences by race, education, marital status, or drug of choice between those who completed the program and those who did not. Limitations and implications for future research are discussed. 2 tables and 21 references