Do Baseline P-Values Follow a Uniform Distribution in Randomised Trials?
Figure 5
P-values for chi-squared and Fisher’s exact tests for large samples with fixed size groups.
Chi-squared and Fisher’s exact test, both two-sided and one-sided, were calculated for10,000 comparisons of two samples of size 1,000 with a binary outcome variable with probability 0.5 of being 0 and 0.5 of being 1.