Bujang Mohamad Adam, Adnan Tassha Hilda
Biostatistics Unit, National Clinical Research Centre , Ministry of Health, Malaysia .
J Clin Diagn Res. 2016 Oct;10(10):YE01-YE06. doi: 10.7860/JCDR/2016/18129.8744. Epub 2016 Oct 1.
Sensitivity and specificity analysis is commonly used for screening and diagnostic tests. The main issue researchers face is to determine the sufficient sample sizes that are related with screening and diagnostic studies. Although the formula for sample size calculation is available but concerning majority of the researchers are not mathematicians or statisticians, hence, sample size calculation might not be easy for them. This review paper provides sample size tables with regards to sensitivity and specificity analysis. These tables were derived from formulation of sensitivity and specificity test using Power Analysis and Sample Size (PASS) software based on desired type I error, power and effect size. The approaches on how to use the tables were also discussed.
敏感性和特异性分析常用于筛查和诊断测试。研究人员面临的主要问题是确定与筛查和诊断研究相关的足够样本量。尽管有样本量计算的公式,但由于大多数研究人员不是数学家或统计学家,因此,样本量计算对他们来说可能并不容易。这篇综述文章提供了关于敏感性和特异性分析的样本量表。这些表格是基于所需的I型错误、检验效能和效应量,使用功效分析和样本量(PASS)软件制定敏感性和特异性检验而得出的。还讨论了如何使用这些表格的方法。