Fig. 2
From: Significance bias: an empirical evaluation of the oral health literature
The p-curve of the 44,315 p-values studied. The curve on the left a illustrates the overabundance of the p-values below the 0.05 threshold. The curve on the right b is a closer look at the p-values below the 0.05 threshold illustrating a bi-modal distribution of the p-values; one peak close to zero and the other close to the conventional significant threshold of 0.05