this source:
https://www.aihw.gov.au/reports-data/health-welfare-services/alcohol-other-drug-treatment-services/reports main source:
https://www.aihw.gov.au Alcohol and other drug treatment services in Australia 2017–18: key findings25 Jul 2019
In 2017–18, 952 publicly-funded alcohol and other drug treatment services provided just under 210,000 treatment episodes to an estimated 130,000 clients. The four most common drugs that led clients to seek treatment were alcohol (35% of all treatment episodes), amphetamines (27%), cannabis (22%) and heroin (6%). Two-thirds (66%) of all clients receiving treatment were male and the median age of clients was 34.
Related AODTS 2017–18 reports include:
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