A weakness
Calculation of NNT in meta-analysis. The calculation of NNT (number needed to treat) in meta-analysis is described using RR and OR, which are more robust against variability in baseline risk.
Science without sense...double nonsense
Evidence Based Medicine pills
Science without sense...double nonsense
Evidence Based Medicine pills
Category Sin categoría
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.
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,…