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Table 3 Operationalization of fidelity enactment in the FICUS trial

From: Firm, yet flexible: a fidelity debate paper with two case examples

Fidelity Enactment

Operationalization

Measurement

Engagement and performance of intervention activities

The quality and consistency of intervention performance (overall and per intervention component).

Level of fidelity (percentiles):

• Low fidelity: 0–50 (variance > = 50%)

• Moderate fidelity: 51–79 (variance between 21–49%)

• High fidelity: 80–100 (variance of 0–20%).

Fidelity Audit Observation Tool, used once between 6–9 months into implementation.

Fidelity Self-Rating Tool, used between 6–9 months into and after implementation completion.

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Implementation Science

ISSN: 1748-5908