Table 2 Feasibility parameters for the BESST trial internal pilot

Randomising 19 schools

 < 15

15 to 18

 ≥ 19

3- and 6-month follow-up measures conducted in 80% of randomised schools

 < 12

12 to 15

 ≥ 15

Recruit 180 students to the trial

 < 144

144 to 179

 ≥ 180

Participant adherence (% of students followed up)

 < 64%

64 to 79%

 ≥ 80%

60% of students from the intervention arm will give satisfaction ratings on the CSQ-8 of at least 26 points

 < 48%

48 to 59%

 ≥ 60%