Consortium Against the overuse of Opioids in Surgery



The Consortium Against the overuse of Opioids in Surgery (CAOS) was established in August 2019, with the sole aim of reducing the harms associated with opioid use among surgical patients.

By drawing on the expertise, access to data resources, and local networks of each of its core members, CAOS aims to inform opioid prescribing policy and improve clinical practice through international collaborative research 




Shadbolt, C., Abbott, J.H., Camacho, X., Clarke, P., Lohmander, L.S., Spelman, T., Sun, E.C., Thorlund, J.B., Zhang, Y., Dowsey, M.M. and Choong P.F.M., 2020. The Surgeon’s Role in the Opioid Crisis: A Narrative Review and Call to Action. Frontiers in Surgery, 7(4).

Wilson, R., Pryymachenko, Y., Audas, R. and Abbott, J.H., 2019. Long-term opioid medication use before and after joint replacement surgery in New Zealand. New Zealand Medical Journal, 132(1507), pp.33-47.

Catchpool, M., Knight, J., Young, J.T., Clarke, P., Barrington, M.J., Choong, P.F. and Dowsey, M.M., 2019. Opioid use prior to elective surgery is strongly associated with persistent use following surgery: an analysis of 14 354 Medicare patientsANZ Journal of Surgery, 89(11), pp.1410-1416.



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Lvl 2, Clinical Sciences  Building 

29 Regent Street, Fitzroy, 3065

Victoria, Australia


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