Parametric versus non-parametric statistics in the analysis of randomized trials with non-normally distributed data
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چکیده
منابع مشابه
Parametric versus non-parametric statistics in the analysis of randomized trials with non-normally distributed data
BACKGROUND It has generally been argued that parametric statistics should not be applied to data with non-normal distributions. Empirical research has demonstrated that Mann-Whitney generally has greater power than the t-test unless data are sampled from the normal. In the case of randomized trials, we are typically interested in how an endpoint, such as blood pressure or pain, changes followin...
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ژورنال
عنوان ژورنال: BMC Medical Research Methodology
سال: 2005
ISSN: 1471-2288
DOI: 10.1186/1471-2288-5-35