Table 2 Summary of the process evaluation measures used
Implementation outcome | Definition | Data source | Time point |
|---|---|---|---|
Context of the intervention | Contextual factors that impacted the implementation, intervention mechanisms, and outcomes | Initial discussions with site managers prior to intervention implementation | Pre-study |
Focus groups/interviews with drivers and managers | Final follow-up | ||
Researcher field notes | Continuous | ||
Fidelity | The extent to which the intervention was delivered as planned | Internal monitoring of project attendance records | Post-study |
Focus groups/interviews with drivers and managers | Final follow-up | ||
Dose delivered/ received | Dose delivered: the amount of the intervention that was provided by the SHIFT team Dose received: How frequently participants engaged with intervention components | Follow-up questionnaires | 6-months |
Text Magic statistical reporting software (Cambridge, UK) | Continuous | ||
Internal monitoring of project attendance records | Post-study | ||
Adaptations | Changes made to improve the delivery of the intervention | Focus groups/interviews with the drivers and managers | Final follow-up |
Fortnightly reflective research team meetings | Continuous | ||
Sustainability | Maintenance of health behaviours following the 6-month intervention period The extent to which drivers and managers envisaged SHIFT becoming sustainable in the future | Focus groups/interviews with the drivers and managers | Final follow-up |
Mechanisms of impact | Strategies put in place by intervention participants to facilitate behaviour change | Focus groups/interviews with the drivers and managers | Final follow-up |
Follow-up questionnaires | 6-months | ||
Contamination | Interactions between intervention and control sites | Focus groups/interviews with the drivers and managers | Final follow-up |