The Minnesota Department of Corrections has published a series of Legislative Reports and Information. on various subjects.
In this Minnesota Sex Offender Management Final Report 02-07 it provides an analysis of sex offenders.
The work groups also reviewed an analysis of sex offenders released from prison. This analysis completed a recidivism follow-up on sex offenders released from a Minnesota correctional facility between 1990 and 2002. The study involved a total of 3,166 offenders who were released from a Minnesota correctional facility between 1990 and 2002. The sex offense reoffense rates for those released in 1992, 1997, and 1999 were followed to determine reconviction rates after release. It was seen that sexual recidivism in Minnesota has dropped precipitously, as the three- year sexual reconviction rate for 2002 releasees was three percent compared to 17 percent for the 1990 releasees.
At the Jacob Wetterling Foundation website there was this FAQ, How may sex offenders re-offend after their release? which provided this caveat.
Recidivism (re-offense) rates are often cited, but it is important to remember that these figures often measure different things. Some recidivism studies look at all re-offending, not just sex offending. Some studies use arrest statistics, while others use conviction data. Conviction data is very reliable, but it doesn’t include plea bargains or unreported crimes. When you hear a re-offense rate, try to keep these facts in perspective.
According to the newly-released Minnesota Prison Population Projections Report – Fiscal Year 2007 full report, there are potentially greater issues.
With a projected increase of 611 male inmates, sex offenders are expected to have the second-highest numerical growth by FY16. At 38.4 percent, this group has the greatest projected growth rate over the entire forecast period.