How power is conceptualized and operationalized in evidence-based intervention implementation: a scoping review

The potential for implementation science (IS) to address health inequities is limited by insufficient attention to power. Although the field emphasizes context, it remains unclear how best to examine and intervene on power relations related to the implementation of evidence-based interventions (EBIs). This scoping review aimed to determine: 1) To what extent do research projects studying EBI implementation explicitly examine power? 2) In these studies, how is power conceptualized, defined, operationalized, and understood? 3) What opportunities exist to examine and intervene upon power through IS research?

Following established procedures, we undertook a six-step process: 1) articulating research question and purpose; 2) identifying relevant studies; 3) selecting studies; 4) extracting data; 5) summarizing data; and 6) reporting results. We characterized studies' attention to power using Fung's power framework, which attends to everyday, policy, structural, and ethical power. Based on publications available as of February 2022, we included English-language EBI implementation studies from clinical, community, and public health settings that explicitly attended to power. Data extraction included study context, IS frameworks used, definitions and measures of power, and characterizations of how power influenced implementation processes and outcomes.

Of 3,531 articles screened, 28 papers explicitly discussed power in relation to EBI implementation and 11 presented a formal definition of power. Most studies explored everyday and structural power, with far less attention to policy power and almost none to ethical power. Conceptualizations and operationalizations of power varied widely, and few studies reported grounding in IS frameworks. Explicit strategies to intervene upon power were limited. Most studies focused on short-term integration goals, with limited discussion of how power dynamics shape what counts as evidence, whose interests are served, or opportunities for systems transformation.

Researchers have the opportunity to explicitly integrate power theories and frameworks into conceptual models for IS studies to reshape IS efforts and build this evidence base. This will allow the field to move towards critical, systems-focused perspectives that examine how power shapes and can be used to reshape the evidence base, implementation systems, implementation strategies, and implementation, health, and system outcomes.