Apples and pears
Study of heterogeneity in meta-analysis. Numerical (Q, I, H) and graphical methods (Galbraith and L’Abbé) for the study of heterogeneity of the primary meta-analysis studies.
Science without sense...double nonsense
Evidence Based Medicine pills
Science without sense...double nonsense
Evidence Based Medicine pills
Category Statistics
Three feet of a cat
Collinearity in lineal multiple regression. Collinearity in multiple regression is described, as well as the two parameters for its study, the increase and the inflation factors of variance.
In search of causality
Discontinuity regression. Discontinuity regression is a quasi-experimental design that allows causal inference to be made in the absence of randomization.
Censorship
Survival tables and censored data. We describe the methodology of preparing survival tables and the treatment of censored data in this type of study with time to event variables.
A case of misleading probability
Bayes’ theorem. We describe the concept of conditional probability and the development of Bayes’ theorem, used to calculate the conditional probability of an event. Today we are going to see another of those examples where intuition about the value of certain…