Table 2 Description of changes from previous versions

Version 1

Amalgamated RETAKE logic model content and the FRESH fidelity checklist structure to create a physical checklist of the ESSVR intervention components.

Version 2

Assessor no longer asked about the frequency with which the OTs delivered the intervention. Assessor asked about the evidence of the extent to which each component of the intervention: ‘no evidence’, ‘some evidence’ and ‘extensive evidence’.

Requires evidence of component delivery to be extracted verbatim from participant’s case file.

Version 3

Assessor no longer asked to evaluate the extent of the evidence of the component and instead asked to decide whether there is ‘adequate’ evidence of the component with dichotomous answers ‘adequate evidence’ and ‘not adequate evidence’.

Components added from RETAKE ESSVR training manual.

Components separated into intervention stages (early recovery and work planning, graded return to work, job retention and discharge process).

Guidance notes were developed for use alongside the checklist.

Version 4

Every item on the checklist is answered with ‘Yes’, ‘No’ or ‘Not applicable’

Components are categorised as either ‘core’ or ‘desirable’

Components delivered to ‘participant, participant’s family, and participant’s employer’ made separate and addressed individually.

Includes a box for the assessor to record the amount of time taken to complete the checklist.

Version 5

The checklist changed from Word to Excel Spreadsheet containing formulae to automatically sum core and desirable components within and across intervention stages.

The formula is written to calculate the 12-week cut-off date for the point of first contact with OT (Core Component 1)

Drop drown menus added for ‘Evidence Source’ for use when adding evidence from the case file. Data is then extracted into the next cell.

Drop down menus for Yes/No/Not deliverable when completing the checklist.