对含过多零值的数据进行分析。

Analysis of data with excess zeros.

作者信息

Lachenbruch Peter A

机构信息

FDA Center for Biologics Research and Review, Office of Biostatistics and Epidemiology, Rockville, MD, USA.

出版信息

Stat Methods Med Res. 2002 Aug;11(4):297-302. doi: 10.1191/0962280202sm289ra.

DOI:10.1191/0962280202sm289ra

PMID:12197297

Abstract

This paper is an introduction to a set of papers on two-part models that were presented at the 2000 Joint Statistical Meetings of American Statistical Association, International Biometric Society (ENAR), International Biometric Society (WNAR), Institute of Mathematical Statistics, and Statistical Society of Canada. The second part of the paper summarizes results of a study of the size and power of two-part models. It proposes that two-part models are a useful alternative to the t-test and the Wilcoxon test.

摘要

本文是对一组关于两部分模型的论文的介绍，这些论文在2000年美国统计协会、国际生物统计学会（东部地区）、国际生物统计学会（西部地区）、数理统计学会和加拿大统计学会的联合统计会议上发表。本文的第二部分总结了一项关于两部分模型的规模和功效的研究结果。它提出，两部分模型是t检验和威尔科克森检验的一种有用替代方法。