Evidence Based Medicine pills
Evidence Based Medicine pills
Simple correlation. Correlation is defined as the strength and sense of association between two random variables. Some of the most widely used correlation coefficients are described, such as Pearson’s correlation coefficient, Spearman’s correlation coefficient, and Kendall’s tau coefficient.
Multivariate analysis. Multivariate analysis is the set of statistical procedures that simultaneously study various characteristics of the same subject or entity, in order to analyze the interrelation that may exist among all the random variables that these characteristics represent. The…
Sample size in survival studies. When calculating the sample size in survival studies, the determining factor is not the difference in an effect measure between the two groups, but the number of events expected in each of them. The calculation…
Handbook of critical appraisal. The handbook for the critical appraisal of scientific documents is published. It includes bibliographic search topics, the most frequent epidemiological designs and critical reading guidelines.
The least squared method. The least squares method calculates the coefficients of the regression lines to obtain the one that is closest, on average, to all the points.