A person-centered substance use treatment component, the Natural Recovery Program, was developed in a residential substance use treatment setting. The Natural Recovery Program is comprised of small group therapy combined with pursuit of hobbies. The study examined treatment retention, treatment completion and satisfaction of participants of Natural Recovery compared to those who participated in core residential treatment activities alone.

METHODS: Retrospective record review of 643 veterans in an inpatient Mental Health Recovery and Rehabilitation Program was used to determine if participants of Natural Recovery had a different rate of treatment retention and completion than those who participated in the core program alone. Univariate and multivariate analysis was conducted on: participation in the Natural Recovery Program, comorbid psychiatric disorders, legal, medical and psychiatric issues.

PARTICIPANTS: The records of 643 veterans treated in DAP (residential rehabilitation treatment program) at a Veteran's Administration hospital between November, 2009 and March, 2011 were analyzed retrospectively in a quasi-experimental design. The researchers were not blind to participation and participation in the program was an elective component, not randomized. All patients enrolled in DAP were eligible to participate in a novel program called Natural Recovery. Fifteen percent participated in Natural Recovery-Horticulture (n=101), five percent participated in Natural Recovery-Art/Music (n=30) and seventy-nine percent elected to participate in the DAP Core Program only (DAP-CP) (n=512). One percent (n=8) participated in both tracks of Natural Recovery.

PROCEDURE: Participants in Natural Recovery received a one-hour small group therapy session during the week using modules with a staff facilitator while DAP-CP participants attended a large psychoeducational group at that time. Participants in Natural Recovery were given a choice of tracks, either Horticulture or Art/Music based on personal preference. The modules employ analogies between the recovery process and their chosen hobby. Although hobbies were different between the two tracks of Natural Recovery, the fourteen modules covered the same concepts; only the analogy portion of each handout differed.

Natural Recovery participants also pursued four hours of their hobby on each weekend day while DAP-CP participants received large group psychoeducational lectures on weekends during the same amount of time. Thus, total substance use treatment hours between Natural Recovery participants and DAP core program (DAP-CP) participants were equivalent. Additionally, all Natural Recovery-Art/Music, Natural Recovery-Horticulture and DAP-CP participants received one "Leisure Education" lecture.

All participants were free to pursue hobbies during treatment but Natural Recovery participants received materials (access to gardening tools and gardening zones, were provided musical instruments and/or art supplies) to pursue their choice of hobby on the weekend. DAP-CP participants could pursue hobbies during treatment but were not provided musical instruments or art materials, nor did they have access to gardening tools to work in the garden although they could walk in it.

MATERIALS: The modules of Natural Recovery have been previously published and constitute 14 topics, each of which is discussed weekly for 14 weeks [33]. Participants could repeat Natural Recovery modules if their length of stay exceeded 14 weeks. The total number of modules was recorded for each participant.

Inclusion Criteria:

• All patients enrolled in the residential substance use treatment program

Exclusion Criteria:

• None