Table 2 Summary of results of progression criteria feasibility assessment

PC1. Screening process for assessment of eligibility.

79% (n = 15) of interested PwMS were considered eligible after the screening process. Calculations made on 19 PwMS.

Met

Proceed

PC2. Feasibility to include participants to the trial.

100% (n = 12) of eligible PwMS who underwent inclusion assessments were included. Calculations made on 12 PwMS.

Met

Proceed

PC3. Feasibility to include enough participants to the trial, with appropriate retention to follow-up.

67% (n = 8) of included participants were retained at follow-up. Calculations made on 12 PwMS.

Not met

Considerations will be made whether it will be feasible to proceed.

PC4. Attendance at training sessions.

70% median attendance at training sessions during the intervention period. Calculations made on 12 PwMS, of which 9 planned to participate in 2 and 3 to participate in 3 sessions per week. 89% median attendance at training sessions during the intervention period. Calculations made on 8 PwMS, of which 6 planned to participate in 2 and 2 to participate in 3 sessions per week.^a

Not met

Changes in the intervention set-up will be considered.

PC5. Willingness to recommend the intervention to others.

100% (n = 10) of participants reported willingness to recommend the intervention. Calculations made on 10 PwMS.

Met

Proceed

PC6. Suitability of the Mini-BESTest as the primary outcome for the targeted patient group.

8% (n = 1) of the included participants achieved the highest score and 0% (n = 0) the lowest score in the Mini-BESTest. Calculations made on 12 PwMS.

Met

Proceed