Increasing Attendance in Addiction Treatment With Limited Resources: A Narrative Review

Abstract

Treatment nonattendance frequently compromises client outcomes in psychosocial addiction treatment services. However, there is limited literature on strategies that increase attendance and retention without a significant resource burden on clinician or organization. This review of 13 studies describes strategies that do not financially reward clients for attendance or require more than 1 day of training/supervision to implement. These strategies are as follows: role induction; pretreatment written or verbal contact; short message service and telephone reminders; and contracting, prompting, and reinforcement. There is some evidence that role induction strategies can increase attendance in early treatment, with stronger evidence for a more intensive approach. Short message service and telephone reminders show a consistent positive impact on early attendance, although the relationship may weaken over time and for individuals with more complex needs (ie, high impulsivity). The strategy: contracting, prompting, and reinforcement shows promising findings, particularly in the first 3 months of treatment. There is considerable variability in study designs, interventions, and sample sizes—future research should more precisely identify relationships between outcomes and the “active ingredients” in each strategy. However, preliminary evidence suggests that some low clinician/organization-burden strategies increase treatment attendance and retention. The mechanisms underpinning these strategies may overlap with therapeutic engagement theories (eg, outcome expectations, common-factors model). Although these interventions have small to moderate effect sizes, their relative simplicity and low cost increase the likelihood of being implemented at a broad scale, amplifying their benefits.