Fine-tuning
The methodology of the advanced search in Pubmed is established, much more specific than the simple search from the simple text box.
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Science without sense...double nonsense
Evidence Based Medicine pills
Science without sense...double nonsense
Evidence Based Medicine pills
The jargon of the search engine
Thesaurus in search engines are made up of a set of specific descriptors. In the case of Pubmed, they are called MeSH terms.
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The oyster with a thousand pearls
We describe simple search using Pubmed to find the information we need with this search engine.
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A pair of means
The sample size necessary to estimate the comparison of two means depends on the confidence level of the estimate, the power of the study, the variability of the measured variable and the magnitude of the difference that is to be detected.
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Sciences or arts
Mann-Whitney U test, also called Wilcoxon rank-sum test, is a non-parametric test that allows comparing the medians of a quantitative variable for the two categories of a dichotomous qualitative variable. It is applied when the assumptions necessary to use the Student's t-test cannot be fulfilled.
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