MEANING
The difference between outcome risks in two groups, interpreted with an explicit group order or reference direction.
Use it for
Use for an absolute comparison of outcome risks.Describe the absolute gap in outcome frequency between comparison groups.
Words that belong together
- estimate the risk difference
- risk difference between groups
- absolute risk difference
On the page
The risk difference was four percentage points higher in the treated group than in control.
Nearby words
Word forms
- Base
- risk difference
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Usage notes
The sign depends on subtraction order; risk difference is an absolute measure and should not be confused with relative risk.
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