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	Level of Service Inventory-Revised	Recidivism Survival Analysis
分野	Criminology	Criminology
系統	Process / pipeline	Survival analysis
提唱年	1995	1988
提唱者	Donald A. Andrews & James Bonta	David R. Cox (method); Peter Schmidt & Ann Dryden Witte (criminological application)
種類	Actuarial risk/needs assessment instrument	Time-to-event regression for reoffending
原典	Andrews, D. A., & Bonta, J. (2010). The Psychology of Criminal Conduct (5th ed.). Routledge/Anderson. ISBN: 9781422463291	Cox, D. R. (1972). Regression models and life-tables. Journal of the Royal Statistical Society: Series B, 34(2), 187–202.
別名	LSI-R, Level of Service Inventory, Level of Service Inventory Revised, LSI-R Assessment	Time-to-Recidivism Modeling, Recidivism Hazard Modeling, Failure-Time Analysis of Reoffending, Survival Analysis of Reoffending
関連	4	4
概要	The Level of Service Inventory-Revised (LSI-R) is a 54-item actuarial assessment of offender risk and need that operationalizes the Risk-Need-Responsivity model. Items spanning ten criminogenic domains are scored and summed into a total that places an offender in a recidivism-risk band, making the LSI-R one of the most widely used and validated correctional case-management instruments in the world.	Recidivism survival analysis models the time from a release or index event until an individual reoffends, treating reoffending as a time-to-event ('failure') outcome with censoring for those not observed to fail. It applies survival methods — Kaplan-Meier curves, Cox proportional-hazards regression, and split-population models — to answer not just whether someone recidivates but how quickly and what raises or lowers that risk over time.