Why might an effective intervention have little impact in routine practice?

Separate intervention from strategy

The intervention may be a test or programme; the implementation strategy is how a service incorporates it. Training, reminders and workflow organisation address different questions from clinical efficacy. Specify what is being evaluated and in which context.

Look beyond initial adoption

Investigate who was reached, whether procedures occurred as intended and which adaptations were made. Staff and infrastructure availability can affect continuity. Adopting a practice once does not demonstrate that it will be sustained or reach everyone who needs it.

Plan indicators and corrections

Define process and outcome measures before making changes, considering equity and unwanted effects. Record operating costs and reasons for discontinuation. When a practice loses its evidential basis or causes harm, research can also examine how to reduce its use responsibly.

Interpretation limits

Better adherence to a workflow does not establish clinical benefit if the intervention itself is unvalidated.

A strategy successful in one service may require adaptation and evaluation in another.

Continue exploring

Select tools by method, population and purpose. A thematic connection does not validate use in every case.