artbin: Extended sample size for randomized trials with binary outcomes

We describe the command artbin, which offers various new facilities for the calculation of sample size for binary outcome variables that are not otherwise available in Stata. While artbin has been available since 2004, it has not been previously described in the Stata Journal. artbin has been recently updated to include new options for different statistical tests, methods and study designs, improved syntax, and better handling of noninferiority trials. In this article, we describe the updated version of artbin and detail the various formulas used within artbin in different settings.

本文介绍命令artbin，该命令为Stata统计软件中此前未内置的二分类结局变量（binary outcome variables）样本量计算提供了多种全新功能。尽管artbin自2004年起便已推出，但此前从未在《Stata Journal》中被详细介绍。近期，artbin已完成更新，新增了针对不同统计检验、统计方法与研究设计的选项，优化了语法结构，并提升了非劣效性试验（noninferiority trials）的处理能力。本文将对更新后的artbin进行介绍，并详细阐述其在不同场景下所使用的各类计算公式。