Fig. 5
Variation of the most appropriate p cut-off value for 3 effect sizes (d), 3 sample sizes (in each group), and different prior odds of H1 relative to H0. Only results that provide an α ≤ 0.05 and a study power ≥ 0.8 are presented. The y-axis is –log(p); therefore, as we go upper on the axis, the p value decreases. The horizontal dot-dashed gray line corresponds to the conventional p cut-off value of 0.05