Our effect scale

​​​How we rate the effect of an intervention on reducing crime.​
​Effect rating​What it means​
​​Overall, evidence suggests a decrease in crime​
Overall, evidence suggests a decrease in crime (but some studies suggest an increase)
​Overall, evidence suggests no impact on crime (but some studies suggest a decrease)
​Overall, evidence suggests no impact on crime (but some studies suggest either an increase or a decrease)
​​​No evidence to suggest an impact on crime
​Overall, no evidence to suggest an impact on crime (but some studies suggest an increase)
Overall, evidence suggests an increase in crime (but some studies suggest a decrease)
​Overall, evidence suggests an increase in crime