A longitudinal study—Urban Social Issues Study (USIS)—from January 2018 and February 2019—undertaken by University of Lethbridge's professor Em M. Pijl and commissioned by the City of Lethbridge, Alberta,Canada explore "any unintended consequences" of supervised consumption services (SCS) within the "surrounding community". The USIS study was undertaken in response to a drug crisis in Lethbridge that impacted "many neighbourhoods in many different ways." Researchers studied the "perceptions and observations of social disorder by business owners and operators" in a neighborhood where SCS was introduced. The report cautioned, that drug abuse-related antisocial behavior in Lethbridge, in particular, and in cities, in general, has increased, as the "quantity and type of drugs in circulation" increases. As the use of crystal meth eclipses the use of opiates, users exhibit more "erratic behavior". Crystal meth and other "uppers" also "require more frequent use" than "downers" like opiates. The report also notes that not all social disorder in communities that have a SCS, can be "unequivocally and entirely attributed" to the SCS, partly because of the "ongoing drug epidemic." Other variables that explain increased anti-social behaviour includes an increase in the number of people aggregating outdoors as part of seasonal trends with warmer temperatures.