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Absolute Risk Increase

 

The absolute difference in the frequency of harmful outcomes between experimental and control groups, calculated as frequency of harmful outcomes in the experimental group minus the frequency of harmful outcomes in the control group. Typically used to describe a harmful exposure or intervention (e.g., if the frequency of adverse outcomes is 20% in treatment and 10% in control, the absolute risk increase would be 10% expressed as a percentage and 0.10 expressed as a proportion).

Categories: Risk