By Pat Anson, PNN Editor

A new study by CDC researchers has a surprise finding, concluding that there has been “no significant change in the use of prescription opioids” over the past decade by U.S. adults.

The study is based on the National Health and Nutrition Examination Survey, in which a nationally representative sample of nearly 20,000 adults is asked every two years about their healthcare and nutrition.

Although the number of opioid prescriptions in the U.S. has dropped 43% since their peak in 2011, the survey found that the use of opioid medication hasn’t changed much at all.  

In 2017–2018, the survey found that 5.7% of U.S. adults used one or more prescription opioids in the past 30 days, compared to 6.2% of adults a decade earlier.

“Between 2009–2010 and 2017–2018, no significant trend in the use of prescription opioids was observed; however, an increasing trend in the use of nonopioid prescription pain medications without prescription opioids was seen,” researchers found.

USE OF PRESCRIPTION PAIN MEDICATIONS BY U.S. ADULTS

In 2017-2018, women (6.4%) were more likely to be prescribed opioids than men (4.9%). The use of opioids increased with age, from 2.8% among young adults aged 20–39 to 8.2% for those aged 60 and over.

The use of opioid prescriptions was highest among whites (6.4%), followed by blacks (5.2%), Hispanics (3.4%) and Asian adults (1.4%).

The survey did not ask respondents about the dose of opioids they were prescribed, which may account for the discrepancy with other prescription drug databases.    

A 2018 study by the health analytics firm IQVIA found a significant decline in the number of high dose opioid prescriptions of 90 MME (morphine milligram equivalent) or more. But low dose prescriptions of 20 MME or less remained relatively stable.

While the percentage of Americans using opioid prescriptions has remained relatively flat over the past decade, according to the survey, there was a notable increase in the use of non-opioid prescription pain relievers, which rose from 4.3% in 2009-2010 to 5.7% in 2017-2018.

Migraine drugs, COX-2 inhibitors, and non-steroidal anti-inflammatory drugs (NSAIDs) were classified in the survey as non-opioid prescription pain relievers, but anti-depressants and anti-convulsants were not – even though they are increasingly used to treat pain. The IQVIA study found 67 million prescriptions for the anti-convulsant medication gabapentin (Neurontin) in 2018 — a fact that is not reflected in the CDC findings.

The CDC is currently preparing an update of its controversial 2016 opioid guideline, which has been widely adopted as policy by other federal agencies, states, insurers, pharmacies and many doctors — who have used it as an excuse to take people off opioids or greatly reduce their doses.

The updated guideline – which is expected in late 2021 -- is likely to expand the CDC’s recommendations to include the use of opioids for treating short-term acute pain.