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Table 1 Definitions of key terms used in this paper

From: The dynamic sustainability framework: addressing the paradox of sustainment amid ongoing change

Term Definition
Implementation The process of putting to use or integrating evidence-based interventions within a setting [9].
Sustainability To what extent an evidence-based intervention can deliver its intended benefits over an extended period of time after external support from the donor agency is terminated [9].
Sustainment The continued use of an intervention within practice [10].
Voltage drop The phenomenon in which interventions are expected to yield lower benefits as they move from efficacy to effectiveness and into real world use (adapted from [11]).
Program drift The phenomenon whereby deviation from manualized protocols in real-world delivery of interventions is expected to yield decreasing benefit for patients (adapted from [12]).