From: Effectiveness and cost-effectiveness of a patient-initiated botulinum toxin treatment model for blepharospasm and hemifacial spasm compared to standard care: study protocol for a randomised controlled trial
Scenario
Effect size (d)
ICC
Standard care
Intervention
Time points
Alpha
Tails
Power
Scenario 1
0.25
0.3
115
4
0.05
2
0.80
Scenario 2
80
Scenario 3
0.35
59
Scenario 4
0.4
46
0.81