What is the average recidivism rate?

US Bureau of Justice Statistics data shows approximately 68% of released prisoners are re-arrested within 3 years, 83% within 9 years. Rates vary significantly by offence type, age at release, and post-release support programmes.

How is recidivism defined?

Recidivism can be defined as re-arrest, reconviction, or return to incarceration. Re-arrest rates are typically highest (68%), followed by reconviction (~50%), then re-incarceration (~33%) within a 3-year follow-up.

Recidivism Base Rate Calculator

Calculate recidivism base rate as the proportion of released offenders re-arrested, reconvicted, or re-incarcerated within a follow-up period. Used in criminology, rehabilitation policy, and risk assessment tool validation.

Data set — comma or newline separated

Statistical Results — n = 8

Count (n)8

Sum (Σx)40

Min2

Max9

Range7

Q14

Q35.5

IQR1.5

Mean (μ)5

Median4.5

Mode4

Pop. Variance (σ²)4

Pop. Std Dev (σ)2

Sample Variance (s²)4.571428571

Sample Std Dev (s)2.138089935

Skewness0.65625

Excess Kurtosis-0.21875

How to Use

Enter the values for the scenario you are assessing. Calculate recidivism base rate as the proportion of released offenders re-arrested, reconvicted, or re-incarcerated within a follow-up period. Used in criminology, rehabilitation policy, and risk assessment tool validation. Use the recidivism rate result to inform your calculation.

Recidivism Base Rate Calculator

How to Use

Frequently Asked Questions

What is the average recidivism rate?

How is recidivism defined?