The ratio’s trap
Odds ratio vs risk ratio. Odds ratio and risk ratio are related concepts that can be interchanged when the prevalence of the effect is low, but not in other situations.
Science without sense...double nonsense
Evidence Based Medicine pills
Science without sense...double nonsense
Evidence Based Medicine pills
Read MoreThe ratio’s trap
Meat or fish?
Mean or median? Mean and median are two measures of centralization. It is discussed in which situations it is preferable to use one or the other to describe data.
The same old story
Hypothesis contrast. The steps of hypothesis contrast are reviewed: null and alternative hypotheses, choice of statistic, calculation of the p-value and decision.
Some comparisons are not odious
Theoretical quantiles graph. The theoretical quantiles graph (q-q plot), used to check the normality of the data of a distribution, is reviewed.
The error of confidence
Mean’s confidence interval. Obtaining a mean, the concept of standard error and the calculation of the mean’s confidence interval are described.