This is an archived version of the Handbook. For the current version, please go to or search for this chapter here.  Illustrative comparative risks 2: Corresponding risk (with experimental intervention)

For dichotomous outcomes, a corresponding absolute risk should be provided for each assumed risk in the preceding column, along with a confidence interval. This absolute risk with (experimental) intervention will usually be derived from the meta-analysis result presented as in the relative effect column (see Section Formulae are provided in Section 11.5.5. Review authors should present the absolute effect in the same format as assumed risks with control intervention (see Section, e.g. as a number of people experiencing the event per 1000 people.


For continuous outcomes, a difference in means or standardized difference in means should be presented with its confidence interval. These will typically be obtained directly from a meta-analysis. Explanatory text should be used to clarify the meaning, as in Figure 11.5.a.