A sustainable method to reduce postoperative oxycodone discharge prescribing in a metropolitan tertiary referral hospital.

The primary objective of this quality improvement project was to measure and reduce the number of oxycodone immediate-release tablets dispensed to overnight stay surgical patients at discharge. The secondary objective was to reduce the proportion of inappropriate oxycodone immediate-release prescriptions at discharge. Interrupted time series analysis was performed in four surgical wards of St Vincent's Public Hospital, Sydney.