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.
Science without sense...double nonsense
Evidence Based Medicine pills
Science without sense...double nonsense
Evidence Based Medicine pills
Read MoreThree feet of a cat
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.
Simplifying the impact
Other impact numbers. Other impact number, absolute and relative impact numbers, used to assess the results of observational studies are reviewed.
The tribulations of an interval
NNT’s confidence interval. The calculation and interpretation of the confidence intervals of the number needed to treat are described, including the negative extremes of the interval.</p The number needed to treat (NNT) is an impact measure that tells us in…