Dialysis efficiency and tolerance.

CI: confidence interval. OR: Odd Ratio, RC: Regression coefficient, ref: reference OR were computed using a two levels hierarchical logistic mixed model and regression coefficient with a two levels hierarchical linear mixed mode.*missing data for 48 sessions;**missing data for 23 sessions.***p = 0.69 by Fisher’s exact test.CI（置信区间，confidence interval）、OR（比值比，Odd Ratio）、RC（回归系数，Regression coefficient）及ref（参照组，reference）的统计量均通过两水平分层逻辑混合模型（two-level hierarchical logistic mixed model）计算，其中回归系数的计算额外采用两水平分层线性混合模型（two-level hierarchical linear mixed model）。*48个会话存在数据缺失；**23个会话存在数据缺失。***经费希尔精确检验（Fisher’s exact test），p=0.69。