Opioid analgesic prescribing in Australia: a focus on gender and age

Hollingworth, Samantha A., Gray, Paul D., Hall, Wayne D. and Najman, Jake M. (2015) Opioid analgesic prescribing in Australia: a focus on gender and age. Pharmacoepidemiology and Drug Safety, 24 6: 628-636. doi:10.1002/pds.3767


Author Hollingworth, Samantha A.
Gray, Paul D.
Hall, Wayne D.
Najman, Jake M.
Title Opioid analgesic prescribing in Australia: a focus on gender and age
Journal name Pharmacoepidemiology and Drug Safety   Check publisher's open access policy
ISSN 1099-1557
1053-8569
Publication date 2015-06
Year available 2015
Sub-type Article (original research)
DOI 10.1002/pds.3767
Open Access Status
Volume 24
Issue 6
Start page 628
End page 636
Total pages 9
Place of publication Chichester, West Sussex United Kingdom
Publisher John Wiley & Sons
Collection year 2016
Language eng
Formatted abstract
Purpose

The use of prescription opioid analgesics has been increasing over the last few decades in Australia. In particular, oxycodone and fentanyl have increased substantially. We examined the gender and age trends in the prescribing of subsidised opioid analgesics in the Australian population for non-palliative care indications.

Methods

We analysed the Medicare Australia and Drug Utilisation Sub-Committee databases for prescription data from 2002 to 2009 in 10-year age groups and by gender. Prescriptions were converted to Defined Daily Doses (DDD)/1000/day using Australian Bureau of Statistics population data.

Results

Overall use increased progressively in 2002–2009 from 12.95 to 16.08 DDD/1000 population/day (average annual increase 3.4%). Codeine was the most widely used agent followed by tramadol then oxycodone. Dispensed use increased in those aged in their 20s and 30s to plateau between 30 and 59 years for the three most preferred analgesics. The peak use of higher dose formulations of oxycodone was seen in males from 40 years. The highest dose formulation of tramadol was preferred in those aged up to approximately 70 years.

Conclusions

Reasons for increased use may include increased prevalence of people with cancer and use for acute pain. The overall benefit and risk in this escalation of opioid use are difficult to determine; however, the increasing risk of tolerance, dependence, overdose and drug diversion suggests to clinicians and policy makers that this escalation may not be in the best interest of all Australians.
Keyword Analgesics
Opioids
Oxycodone
Fentanyl
Prescribing
Pharmacoepidemiology
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

 
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