Our effect scale

​​​How we rate the effect of an intervention on reducing crime.​
​Effect rating​What it means​
​​Overall, evidence suggests the intervention has reduced crime / reoffending​
Overall, evidence suggests the intervention has reduced crime/reoffending but there is some evidence that it has increased crime/reoffending
​There is some evidence that the intervention has reduced crime/reoffending, but overall it has not had a statistically significant effect on crime/reoffending
​There is some evidence that the intervention has either increased or reduced crime/reoffending, but overall it has not had a statistically significant effect on crime/reoffending
​​​There is no evidence to suggest that the intervention has had a statistically significant impact on crime/reoffending
​There is some evidence that the intervention has increased crime/reoffending, but overall the intervention has not had a statistically significant effect on crime/reoffending
​Overall, the evidence suggests that the intervention has increased crime/reoffending, but there is also some evidence that it has reduced crime/reoffending
​Overall, the evidence suggests that the intervention has increased crime/reoffending