Static-99R
Definition
A 10-item actuarial sex-offender risk instrument; the -R denotes the age-at-release weighting adjustment. Scores map to relative-risk labels (Below Average through Well Above Average) and approximate 5-year and 10-year sexual recidivism probabilities from aggregated North American and Western European normative data.
- Item count
- 10 items
- Recidivism prediction windows
- 5-year and 10-year estimates
- Risk output format
- Relative-risk categories from Below Average to Well Above Average
Common questions
What does Static-99R measure?+
Static-99R is a 10-item actuarial tool that estimates the risk of sexual recidivism. It produces relative-risk labels ranging from Below Average to Well Above Average and gives probability estimates for reoffending within 5 and 10 years.
Where do the probability estimates come from?+
The risk estimates are based on aggregated data from North American and Western European offender samples. This normative data allows clinicians and programme planners to compare an individual's risk profile against established reference groups.
How is Static-99R used in sentencing or treatment?+
It operationalizes the Risk Principle, which guides how intensive a sex-offender treatment programme should be. Higher-risk individuals typically receive more intensive intervention based on their Static-99R score.
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Explained in these topics
- Sex-Offender Risk Assessment: Static-99R, Stable-2007 and SRMA 10-item actuarial sex-offender risk instrument; the -R denotes the age-at-release weighting adjustment. Scores map to relative-risk labels (Below Average thr...
- Sex-Offender Treatment: Risk-Need-Responsivity and the Good Lives ModelA 10-item actuarial risk instrument for sexual recidivism, providing 5-year and 10-year reconviction probability estimates. Used to operationalise the Risk Pri...