临床研究中经常遇到要比较各种以等级分组的资料。如临床疗效以控制、显效、好转、无效等分组,检验工作中以-、+、++、+++、++++等分组。这些资料用X~2检验往往不能说明那一组疗效较好,而只能说明两组有无显著差别。这里介绍一种适用于处理这类资料的方法, Often encountered in clinical studies to compare various data grouped by level. Such as clinical efficacy to control, effective, improved, invalid group, test work -, +, ++, +++, ++++ grouping. These data with X ~ 2 test often can not explain that a group of better efficacy, but only shows that there was no significant difference between the two groups. Here’s a way to deal with this type of information,