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Abstract Details

Activity Number: 127
Type: Contributed
Date/Time: Monday, July 30, 2012 : 8:30 AM to 10:20 AM
Sponsor: Section on Statistical Consulting
Abstract - #305329
Title: Much Ado About Almost Nothing: How to Deal with Limited Data
Author(s): Stephen Looney*+ and Courtney E. McCracken
Companies: Georgia Health Sciences University and Emory University
Address: Dept. of Biostatistics, Augusta, GA, 30912-4900, United States
Keywords: relative risk ; exact methods ; limit of detection ; Spearman correlation ; binomial distribution ; odds ratio

Applied statisticians are often confronted with statistical inference problems dealing with situations in which there appear to be no data, or data of only limited usefulness. For example, when attempting to find a confidence interval for a binomial proportion, the sample may contain no successes. Such a scenario could be encountered when attempting to estimate the incidence of an extremely rare side effect associated with the administration of a newly developed drug. Other statistical inference situations in which there may be no or only limited data include estimating an odds ratio when one of the cells in a 2x2 table is empty, estimating a risk ratio when one of the groups experiences none of the outcome of interest, and incorporating observations below the limit of detection into a statistical analysis. In this presentation, we illustrate each of these scenarios with real data and describe the preferred methods for handling them.

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