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Table 1 Data collection tools and timeframes for data collection

From: Developing a method to assess fidelity to a complex vocational rehabilitation intervention in the FRESH trial: a feasibility study

Tool Timeframe Data type CFIF construct Details Data usage
Intervention CRF Continuous recording; collected at end of intervention Quantitative Adherence Quantity of components (10-min units) delivered per session, direct participant activity (face-to-face, telephone), travel, indirect activity (e.g. session preparation) Triangulated with clinical record
Clinical notes As above Quantitative and qualitative Adherence and moderating factors Description of intervention plus evidence of correspondence Triangulated with intervention CRF
Fidelity checklist Quarterly at monitoring visits Quantitative and qualitative Adherence and moderating factors Oversight per OT, extent of components delivered (always to never), moderating factors affecting delivery. Advise OTs Triangulated with intervention CRF, clinical record, mentoring CRF.
Mentoring CRF Monthly Qualitative Adherence and moderating factors Intervention summary provided by each OT, details factors affecting delivery and potential solutions Triangulated with intervention CRF, clinical record, fidelity checklist
Interview with OTs Start of intervention delivery and end of delivery Qualitative Moderating factors Addressed acceptability of the intervention, the factors affecting delivery and solutions to overcome barriers Triangulated with mentor CRF, clinical record
Interview with PWTBI, their employers and NHS staff End of intervention delivery Qualitative Moderating factors Addressed acceptability of the intervention, the factors affecting delivery and solutions to overcome barriers Triangulated with mentor CRF, clinical record
  1. Continuous = OT completed the CRF and clinical record after each session. CFIF adherence includes intervention content, coverage, frequency and duration of intervention; CFIF moderating factors include participant responsiveness, intervention complexity, strategies to facilitate implementation, quality of delivery, recruitment and context