From: Set up and assessment of progression criteria for internal pilots: the Brushing RemInder 4 Good oral HealTh (BRIGHT) trial example
Target to randomise
Invited
Consented (% of invited)
Randomised (% of target)
Average per year group
60
133
55 (41%)
54 (90%)a
Total across all schools
1200
2653
1090 (41%)
1073 (89%)