The National Drug Treatment Reporting System (NDTRS) records cases of treated problem drug and alcohol use in Ireland between 2009 and 2015.

Overview: alcohol as a main problem:
In this seven-year period 56,702 cases were treated for problem alcohol use. The number of cases increased from 7,993 in 2009 to 8,876 in 2011. Since then the numbers have decreased year-on-year to 7,616 in 2015.
In 2015:
• The proportion of new cases decreased to 46.7% from 54.1% in 2009.
• The majority of cases were treated in outpatient facilities (52.7%), similar to previous years.
• Nearly four out of 10 cases were treated in residential facilities, similar to previous years.
• Only 2.7% of cases were treated for problem alcohol use in prison.