From: The effectiveness of a Supported Self-management task-shifting intervention for adult depression in Vietnam communities: study protocol for a randomized controlled trial
Effect size
ICC
Number per cluster
Total N required
0.5
0.05
8
173
0.8
69
0.2
1063
0.3
474
0.4
268
0.45
212
0.025
150
0.01
132
0.005
163