(AP) — A newly released study raises questions about the effectiveness of Nebraska’s broader public listings of sex offenders.

The University of Nebraska at Omaha study was commissioned by the Legislature, which in 2009 had required adding to the registry the names and addresses of all sex offenders. Previously, only the names of those considered most likely to reoffend were made available to the public.

The study report released Monday says the increase in listings has made it more difficult for people to determine “which offenders on the list are the most dangerous.”