Sample size: planned number of observations
We plan to recruit 6500 participants in total (ideal). We want to reach a sample of
• 500 subjects per treatment for the treatments EXO-NO, EXO-LO, EXO-MID, EXO-HI, EXO-BEST, EXOBEST&PIECERATE, PIECERATE
• 1000 subjects per treatment for the treatments RANKONLY, ENDO, ENDO&PIECERATE
so as to attain sufficiently precise estimates of the productivity per treatment.