外科临床研究中常用的统计分析方法

Statistical tests for surgical clinical research

选择临床研究中统计分析方法时择,必须了解研究的目的、研究的设计、资料的类型、资料的分布和样本量的大小。否则常会造成统计分析方法的误用,严重影响科研的质量。应根据实验设计类型和目的,结合应变量和自变量的数据类型、数据分布来选定适当的统计分析方法。外科医生应了解如何合理实验设计,选择合适的统计方法来回答临床问题。

A set of questions should be clarified when selecting statistical tests in clinical research, such as aim of study, study design, type of data, distribution of data, and sample size. Misuse of statistical tests will lead to poor quality of research, and even to opposite results. Common statistical tests and experimental designs for surgical clinical research were briefly introduced in this paper. It is followed by demonstrations of research design, features of dependant and independent variables are important to consider when choosing a statistical test. The aim of this paper focuses on how to select the appropriate statistical test for a particular clinical question.