Pre/Post Data Analysis - Simple or Is It?

[摘要] This slide presentation reviews some of the problems of data analysis in analyzing pre and post data. Using as an example, ankleextensor strength (AES)experiments, to measure bone density loss during bed rest, thepresentation discusses several questions: (1) How should we describe change? (2)Common analysis methods for comparing post to pre results. (3) What do we mean by "% change"? and (4) What are we testing when we compare % changes?

[发布日期] 2011-03-03

[学科分类] 统计和概率