From Bill White’s Recovery Management monograph:
The best single predictor of post-treatment outcome across all modalities is length of time in treatment. There is a dose effect of both treatment and recovery mutual aid participation, with recovery outcomes improving as dose increases.
. . .
Treatment duration in methadone and non-methadone treatment units has declined nationally in the past decade.Clients with shorter lengths of stay have poorer rates of post-treatment abstinence and higher treatment readmission rates.In a recent interview, Dr. Douglas Anglin, a pioneer in the study of “addiction careers,” lamented the lost understanding of the importance of treatment dose.
It has been very disappointing in recent decades to see both in-patient and out-patient services stripped down to what I consider clearly sub-threshold levels for many chronic drug problems; currently, such programs are typically capable of producing only a short-term blip in behavior and personal recovery trajectories.