Worshipped, but misunderstood
The meaning of p-value. The meaning of p-value is the probability of obtaining a value equal to or more distant from the equality of effect given that the null hypothesis is true.
Science without sense...double nonsense
Evidence Based Medicine pills
Science without sense...double nonsense
Evidence Based Medicine pills
Category Statistics
The cheaters detector
Pitfalls of statistics. Some of the inappropriate uses of statistics are described, either due to ignorance or to modify the apparent relevance of the results.
Pairing
The choice of the statistical test. The most suitable statistical test is described according to the type of variable, whether or not it is paired data and follow normal distribution. The most common situations will be those of comparison of means,…
Little ado about too much
Critical appraisal of meta-analysis. Guidelines for critical reading of a meta-analysis are proposed. The main points dealt with by the PRISMA declaration are also described.
Achilles and Effects Forest
Publication bias. We describe publication bias in meta-analysis and the most used methods that are empoyed for its study, both graphical and numerical.