在协方差分析中去做

谢谢，想再请问下，我看到英文文献中是按百分比例呈现数据的，如图10%、30%、50%、70%、90%，请问要实现这个要对连续变量做什么处理？非常感谢！

原文
“As our sample was nonclinical, and we were interested in elevated levels of the variables in question, we chose to examine and depict the majority of the distribution of our variables, as represented by
the 10th–90th percentiles of belongingness and burdensomeness.”