From: Ultra-low dose of rituximab in rheumatoid arthritis: study protocol for a randomised controlled trial
SD change
r
Sample size 1000 mg arm
Total trial size (5 x sample size in 1000 mg arm)
0.9
0.17
26
130
0.8
0.35
24
120
0.7
0.5
20
100
0.6
0.63
16
80