Table 2 Criteria for continuation to the definitive RCT

Average recruitment of participants per site over 6 months

≥ 20 (range 12–30)

< 20 but ≥ 10

< 10

Return of follow-up questionnaires (at 9 months)

≥ 75%

< 75% but ≥ 6 0%

< 60%

Intervention training

At least 2 members of staff from each stroke service attending training days and assessed as competent

Intervention delivery (% of recruited stroke survivors offered at least one session of the intervention)

≥ 75%

< 75% but ≥ 50%

< 50%

Intervention implementation (% of stroke services deemed competent and went on to deliver the intervention to participants)

≥ 80% (i.e. 4 services)

60% (i.e. 3 services)

< 60% (i.e. 2 or less services)