Simplifying the impact
Other impact numbers. Other impact number, absolute and relative impact numbers, used to assess the results of observational studies are reviewed.
Evidence Based Medicine pills
Evidence Based Medicine pills
Other impact numbers. Other impact number, absolute and relative impact numbers, used to assess the results of observational studies are reviewed.
Hybrid designs The main observational hybrid designs are described: cohort nested cases and controls studies and cohort and case-control studies.
Contingency tables. Contingency tables are described for the most common studies: cross-sectional, case-control, and cohort studies.
Confounding in case-control studies. Confounding in case-control studies must be adjusted: matching is one of the techniques for doing this.
Confounding in cohort studies. Confounding in cohort studies can be controlled by stratifying and calculating an adjusted risk measure.