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Half of Veterans Prescribed Medical Opioids Continue to Use Them Chronically, Study Finds

Researchers sought comprehensive predictors of opioid abuse in veterans based on discontinuation rates

PHOENIX, March 6, 2014 /PRNewswire-USNewswire/ -- Of nearly 1 million veterans who receive opioids to treat painful conditions, more than half continue to consume opioids chronically or beyond 90 days, new research says.  Results presented at the 30th Annual Meeting of the American Academy of Pain Medicine reported on a number of factors associated with opioid discontinuation with the goal of understanding how abuse problems take hold in returning veterans.

Study subjects were drawn from national Veterans Healthcare Administration (VHA) data. Criteria for inclusion included at least 2 outpatient visits at a VHA facility in 2009 and at least 90 days of opioid use within a 180-day period. Opioid discontinuation was defined as no opioid use for at least 6 months. Funding for the study came from the National Institute on Drug Abuse.

Of 959,226 veterans who received an opioid prescription, 502,634 (representing 52.4% of the total sample) used opioids chronically.

The preliminary analysis showed that certain factors were more likely to be present in veterans who continued to use opioids chronically: They include post-traumatic stress disorder, tobacco use, being married, having multiple chronic pain conditions, the use of multiple opioids and opioid dose above 100 mg per day.

Some findings did not align with previous research in the fields of pain and addiction.

"Unlike other samples, it appears that mental-health disorders and substance-use disorders are associated with increased rates of discontinuation in the VA," said Mark Sullivan, MD, PhD, who led a collaborative team of researchers from the University of Washington in Seattle, Wash., the University of Arkansas Medical Sciences in Little Rock, Ark., and the Research Triangle Institute in Research Triangle Park, N.C. "The exception is tobacco use, which is associated with a decreased likelihood of discontinuation."

Dr. Sullivan emphasized that the veterans in the current study comprised the first sample where half of all opioid users were chronic users of greater than 90 days per year. Investigators examined demographic and clinical characteristics as well as treatment choices that could serve to predict opioid discontinuation.  Pain characteristics and diagnoses related to medical conditions, mental health and substance abuse were included along with other medications, such as non-opioid pain relievers and those used to treat mental-health disorders.

Dr. Sullivan said lack of reliable

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SOURCE American Academy of Pain Medicine

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