From: Evaluation of prediction effect of perfusion index for supraclavicular brachial plexus block in children: protocol for a randomized trial
Type I Error- Alpha
0.20
0.10
0.05
0.01
Type II Error -Beta
16 + 4
23 + 6
30 + 8
46 + 12
21 + 6
29 + 8
37 + 10
54 + 14
26 + 7
35 + 9
43 + 11
62 + 16
47 + 12
57 + 15
78 + 20