The primary objective of this pilot study is to evaluate the impact of switching 30 subjects
from an existing antipsychotic to risperidone long acting on healthcare resource utilization.
The study will be a ten month open-label, 'mirror-image', pilot study. Healthcare resource
utilization during the 10 months prior to starting risperidone long acting will be
retrospectively collected for all subjects (period A) at the beginning of the study. The
utilization of direct medical resources will also be collected for 10 months after initiation
of risperidone long acting (period B). In this design the patients will serve as their own
control.