中文摘要：

研究可交换条件下多维结构回归模型中总体平均处理效应的混杂因子的控制和排序问题，利用矩阵的迹定义混杂因子的控制效率，通过控制效率来控制混杂因子，并给出混杂因子的排序，同时给出一个应用实例．

英文摘要：

In this paper, we study the problem about the controlling of confounders and the ordering of confounders in the multi-dimensional structural regression under the exchangeability conditions. Using the matrix trace ,we give the efficiency for control of confounding.we can control the confounders by the efficiency for control of confounding, and give the ordering of confounders .Last, we give an example.