By Pat Anson, PNN Editor
The Centers for Disease Control and Prevention and other federal agencies have faced a fair amount of criticism over the years for adopting insensitive policies and guidelines that are often harmful to the pain community. But there are growing signs the CDC and other agencies are starting to listen to or at least better understand pain patients.
Today the CDC released a new report estimating that 50 million Americans – just over 20 percent of the adult population – have chronic pain. About 20 million of them have “high-impact chronic pain” -- pain severe enough that it frequently limits life or work activities. The estimates are based on the 2016 National Health Interview Survey of over 33,000 adults.
“Pain is a component of many chronic conditions, and chronic pain is emerging as a health concern on its own, with negative consequences to individual persons, their families, and society as a whole,” reported James Dahlhamer, PhD, of the CDC's Division of Health Interview Statistics.
Dahlhamer and his colleagues found that women, unemployed older adults, adults living in poverty, rural residents and people without public health insurance are significantly more likely to have chronic pain, while the risk of pain is lower for people with a bachelor’s degree.
“Socioeconomic status appears to be a common factor in many of the subgroup differences in high-impact chronic pain prevalence,” they found. “Education, poverty, and health insurance coverage have been determined to be associated with both general health status and the presence of specific health conditions as well as with patients’ success in navigating the health care system. Identifying populations at risk is necessary to inform efforts for developing and targeting quality pain services.”
Last week the National Institutes of Health (NIH) released its own research on high impact chronic pain (HICP), estimating that 11 million American adults have it -- about half the CDC’s estimate.
Both the NIH and CDC are part of the Department of Health and Human Services (HHS). It was not immediately clear why the two estimates are so far apart – or why two government agencies in the same department were studying the same thing at the same time.
It’s certainly not the first time researchers have disagreed on the number of people in pain. In 2011, the Institute of Medicine released a landmark report claiming at least 100 million Americans have chronic pain, an estimate that one critic said was a “ridiculous number.” Other estimates range from 39 to 70 million.
“The multidimensional nature of chronic pain is not reflected in commonly used operational definitions… resulting in inordinately high prevalence estimates that limit our ability to effectively address chronic pain on a national level,” said Mark Pitcher, PhD, a visiting fellow at the National Center for Complementary and Integrative Health (NCCIH).
Like their counterparts at the CDC, NIH researchers found that socioeconomic factors play a significant role in high impact chronic pain. HICP sufferers not only have more severe pain, they are more likely to have mental and cognitive health issues, as well as substantially higher healthcare costs. About 83 percent of people with HICP are unable to work and one-third have difficulty with simple activities such as bathing and getting dressed.
“By differentiating those with HICP, a condition that is associated with higher levels of anxiety, depression, fatigue, and cognitive difficulty, we hope to improve clinical research and practice,” said co-author M. Catherine Bushnell, PhD, scientific director at NCCIH.
The concept of HICP was first proposed by the National Pain Strategy to better identify patients with pain severe enough to interfere with work and life activities. It also helps distinguish HICP from other types of chronic pain that are less impactful and more easily treated.
“It is crucial that we fully understand how people’s lives are affected by chronic pain. It will help improve care for individuals living with chronic pain and strategically guide our research programs that aim to reduce the burden of pain at the population level,” said Linda Porter, PhD, director of the Office of Pain Policy at the National Institute of Neurological Disorders and Stroke.
The Food and Drug Administration has also recently taken steps to better understand the chronic pain population. In July, the FDA held a day-long public hearing and heard from dozens of pain patients and advocates. Some fought back tears as they testified about the lack of access to opioid medication and the deteriorating quality of pain care in the U.S.