Michigan Model for HealthTM Learning to Enhance and Adapt for Prevention (Mi-LEAP): protocol of a pilot randomized trial comparing Enhanced Replicating Effective Programs versus standard implementation to deliver an evidence-based drug use prevention curriculum
Authors: Eisman Andria B. , Palinkas Lawrence A. , Koffkey Christine , Herrenkohl Todd I. , Abbasi Umaima , Fridline Judy , Lundahl Leslie , Kilbourne Amy M. 
Published: September 2022

Abstract
Background
School-based drug use prevention programs have demonstrated notable potential to reduce the onset and escalation of drug use, including among youth at risk of poor outcomes such as those exposed to trauma. Researchers have found a robust relationship between intervention fidelity and participant (i.e., student) outcomes. Effective implementation of evidence-based interventions, such as the Michigan Model for HealthTM (MMH), is critical to achieving desired public health objectives. Yet, a persistent gap remains in what we know works and how to effectively translate these findings into routine practice. The objective of this study is to design and test a multi-component implementation strategy to tailor MMH to meet population needs (i.e., students exposed to trauma), and improve the population-context fit to enhance fidelity and effectiveness.

Methods
Using a 2-group, mixed-method randomized controlled trial design, this study will compare standard implementation versus Enhanced Replicating Effective Programs (REP) to deliver MMH. REP is a theoretically based implementation strategy that promotes evidence-based intervention (EBI) fidelity through a combination of EBI curriculum packaging, training, and as-needed technical assistance and is consistent with standard MMH implementation. Enhanced REP will tailor the intervention and training to integrate trauma-informed approaches and deploy customized implementation support (i.e., facilitation). The research will address the following specific aims: (1) design and test an implementation strategy (Enhanced REP) to deliver the MMH versus standard implementation and evaluate feasibility, acceptability, and appropriateness using mixed methods, (2) estimate the costs and cost-effectiveness of Enhanced REP to deliver MMH versus standard implementation.

Discussion
This research will design and test a multi-component implementation strategy focused on enhancing the fit between the intervention and population needs while maintaining fidelity to MMH core functions. We focus on the feasibility of deploying the implementation strategy bundle and costing methods and preliminary information on cost input distributions. The substantive focus on youth at heightened risk of drug use and its consequences due to trauma exposure is significant because of the public health impact of prevention. Pilot studies of implementation strategies are underutilized and can provide vital information on designing and testing effective strategies by addressing potential design and methods uncertainties and the effects of the implementation strategy on implementation and student outcomes.

Trial registration
NCT04752189—registered on 8 February 2021 on ClinicalTrials.gov PRS