And what about me?
Number remaining at risk. The number needed to treat is the most widely used measure of clinical impact in the analysis of the results of a clinical trial. However, the prognosis of patients in whom the outcome under study does…
Science without sense...double nonsense
Evidence Based Medicine pills
Science without sense...double nonsense
Evidence Based Medicine pills
Tag Relative risk
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.
Brown or blond, all bald
Comparisson of variables. We describe the statistical tests that should be used for comparisson of variables of different kinds.
The table
Contingency tables. Contingency tables are described for the most common studies: cross-sectional, case-control, and cohort studies.
Ménage à trois
Modifier of effect. Modifier of effect takes place when the magnitude of a variable interferes with the effect of the exposure on the result.