01295nam a2200205   450000100060000010000410000610100080004720001080005533006710016346100620083460600280089660600430092460600240096760600160099160600190100770000180102670100160104470100190106085200100107922889  a20091109c2009       y0pory50      ba  aeng  aIs custody an effective sentencing option for the UK? Evidence from a meta-analysis of existing studies  aPrison numbers in the UK are at record levels and continue to rise. The rise in prison numbers has led to a renewed focus on the relative effectiveness of different sentences and in particular the effectiveness of prison when compared to alternative, community-based, sentences. The aim of this research is to test the hypothesis that prisons are an effective means of reducing re-offending in the UK. A review of existing studies identified 91 estimates of the effect on re-offending of prison for adults when compared against alternative sentences and 15 estimates of the effect on re-offending of prisons for juveniles when compared against alternative sentences.  vV.56,n.2dJune 2009pp.129-151tProbation JournalcLondon  aDIREITO PENITENCIÁRIO  aMEDIDAS DE EXECUÇÃO NA COMUNIDADE   aMEDIDAS DETENTIVAS   aEFICÁCIA   aREINCIDÊNCIA  aMARSHbKevin   aFOXbChris   aSARMAHbRashmi  jP.105