The IPS-25 has promising psychometric properties, with greater precision and content coverage than the IPS-15. However, it has not demonstrated an advantage over the IPS-15 in predictive validity. Research directly comparing the two scales is needed.

This study examined rates of sustainability, defined as program continuation, and factors associated with sustainability 6 years after full implementation of five evidence-based practices in 49 sites in the National Implementing Evidence-Based Practices Project. Based on interviews with agency leaders and state leaders, 47 % of sites sustained the practice for 6 years, 16 % restarted the practice after a period of discontinuation, and 37 % discontinued the practice permanently. Agency leaders from discontinuing sites identified inadequate financial support, lack of prioritization, and workforce issues as barriers to continuation. Adequate financing, ongoing supervision, and monitoring of fidelity and outcome may promote long-term sustainability.

Few studies have examined predictors of long-term sustainability of evidence-based practices in mental health. This study used assessments of five evidence-based practices implemented in 49 sites in eight states at baseline and years 2, 4, and 8. Program characteristics, implementation characteristics, reinforcement activities, and sustainability factors were used to predict program survival status. The majority of predictors were not significant. Supervisor turnover in year 4 predicted survival status in year 8, but site characteristics, fidelity at implementation, quality improvement activities, and post-implementation activities had little impact on long-term program survival. This study extends previous sustainability research by examining the long-term impact of internal program factors over a substantial period of time using longitudinal prediction. Future research should also consider the influence of external factors such as financial policies.

State administrative supports of evidence-based practices (EBPs) may critically affect sustainability. As part of a larger follow-up to the multistate National Implementing Evidence-Based Practices Project, 13 leaders from eight States reported on recent statewide policies and resources that influenced the maintenance of 49 EBP programs 6 years after implementation. Nearly three-quarters (71 %) of the programs were currently operational and adhering to State fidelity standards. Most of the programs had level or increased funding over the last few years, and most received other State support and resources, such as training and technical assistance. Steady State funding as well as State-sponsored training and expertise appear critical to long-term EBP program maintenance.

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