Monash University A new study by researchers from Monash University has shown that women and people with mental health issues are more likely to require attendance by an ambulance for oxycodone misuse. Using data from Turning Point’s National Ambulance Surveillance System (NASS) , the study, led by Associate Professor Suzanne Nielsen from the Monash Addiction Research Centre, analysed records relating to extramedical oxycodone use in Victoria from 2013-2018 and found characteristics of oxycodone presentations in Australian ambulance attendances appear to be changing over time. These changes revealed that females made up more than half of all overdose presentations (56.4 per cent) but also showed there has been an increase in alcohol use, extramedical use of non-opioid pharmaceuticals and suicidal thoughts or behaviours and a decrease in heroin involvement.