منابع مشابه
Recommended tests for association in 2 x 2 tables.
The asymptotic Pearson's chi-squared test and Fisher's exact test have long been the most used for testing association in 2x2 tables. Unconditional tests preserve the significance level and generally are more powerful than Fisher's exact test for moderate to small samples, but previously were disadvantaged by being computationally demanding. This disadvantage is now moot, as software to facilit...
متن کاملTests for the homogeneity of two binomial proportions in extremely unbalanced 2 x 2 contingency tables.
Asymptotic tests such as the Pearson chi-square test are unreliable for testing the homogeneity of two binomial probabilities in extremely unbalanced cases. Two exact tests (conditional and unconditional) are available as alternatives and can be implemented easily in StatXact 6.0. In equal sample cases it is well known that the unconditional exact test is more powerful than the conditional exac...
متن کاملTests of Significance for 2 × 2 Contingency Tables
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متن کاملMeta-analysis for 2 x 2 tables: a Bayesian approach.
This paper develops and implements a fully Bayesian approach to meta-analysis, in which uncertainty about effects in distinct but comparable studies is represented by an exchangeable prior distribution. Specifically, hierarchical normal models are used, along with a parametrization that allows a unified approach to deal easily with both clinical trial and case-control study data. Monte Carlo me...
متن کاملElucidating the Foundations of Statistical Inference with 2 x 2 Tables
To many, the foundations of statistical inference are cryptic and irrelevant to routine statistical practice. The analysis of 2 x 2 contingency tables, omnipresent in the scientific literature, is a case in point. Fisher's exact test is routinely used even though it has been fraught with controversy for over 70 years. The problem, not widely acknowledged, is that several different p-values can ...
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ژورنال
عنوان ژورنال: Gut
سال: 1985
ISSN: 0017-5749
DOI: 10.1136/gut.26.10.1096-a