Table 1.
Annualised rate of violence in individuals classified as high risk by eight widely used structured risk assessment instruments
| Annualised rate, % |
||||||
|---|---|---|---|---|---|---|
| Instrument | High-risk group | ka | Min. | Max. | Mean | s.d. |
| Actuarial | ||||||
| PCL-Rb | Scores ⩾30 | 8 | 0.0 | 100.0 | 18.0 | 33.5 |
| SORAG | Scores ⩾+20 | 6 | 0.0 | 19.0 | 10.4 | 6.6 |
| Static-99 | Scores ⩾6 | 9 | 3.4 | 13.6 | 7.1 | 3.5 |
| VRAG |
Scores ⩾+14 |
10 |
6.5 |
75.0 |
22.4 |
20.9 |
| SPJ | ||||||
| HCR-20 | Professional judgement | 9 | 5.0 | 100.0 | 40.6 | 43.8 |
| SARA | Professional judgement | 3 | 16.5 | 22.9 | 19.4 | 3.2 |
| SAVRY | Professional judgement | 9 | 4.3 | 100.0 | 38.6 | 27.6 |
| SVR-20 | Professional judgement | 3 | 3.8 | 5.6 | 8.5 | 6.7 |
HCR-20, Historical, Clinical, Risk Management-20; Max., maximum; Min., minimum; PCL-R, Psychopathy Checklist - Revised; SARA, Spousal Assault Risk Assessment; SAVRY, Structured Assessment of Violence Risk in Youth; SORAG, Sex Offender Risk Appraisal Guide; SPJ, structured professional judgement; SVR-20, Sexual Violence Risk-20; VRAG, Violence Risk Appraisal Guide.
a.
Number of samples.
b.
Instrument not originally developed for the purpose of forensic risk assessment.