The differences and similarities between two-
青岛11中
sample t-test and paired t-test社会能见度
Manfei XU1*, Drew FRALICK1, Julia Z. ZHENG2, Bokai Wang3, Xin M. TU5, Changyong FENG3,4
【摘要】概述:临床研究中经常遇到比较实验组和对照组之间的结果.双样本t 检验(又称为独立样本t检验)和配对t检验可能是运用于比较两个样本之间均值的最广泛的统计方法.然而,这两种方法的运用会产生混淆,从而导致使用不当.本文中,我们讨论了这两种t检验之间的异同性,并运用三个范例来阐述双样本t检验和配对t检验的计算过程. 【期刊名称】上海精神医学
新感觉f5【年(卷),期】2017(029)003
【总页数】5
奋进的旋律评价【关键词】Key words: independent t-test; paired t-test; pre- and post- treatment; matched paired data
内部质量保证体系
Biostatistics in psychiatry (39)?
1. Introduction
In clinical research, we usually compare the results of two treatment groups (experimental and control). The statistical methods used in the data analysis depend on the type of outcome.[1] If the outcome data are continuous variables (such as blood pressure), the researchers may want to know whether there is a significant difference in the mean values between the two groups. If the data is normally distributed, the
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