“差异显著性”常见的英文表达是 "significance of difference" 或 "statistical significance of difference"（若强调统计学层面）。
In this study, we examined the significance of difference between the two groups. （在本研究中，我们考察了两组之间的差异显著性。）
The results showed a statistical significance of difference in the experimental outcomes. （结果显示实验结果存在统计学上的差异显著性 。）