Dec 2, 2013
Findings from a unique study underscore need for public health action on pain and disability in the elderly, reports PAIN®
Philadelphia, December 2, 2013 – More than half of older adults in the United States – an estimated 18.7 million people – have experienced bothersome pain in the previous month, impairing their physical function and underscoring the need for public health action on pain. Many of those interviewed by investigators for a study published in the current issue of PAIN® reported pain in multiple areas.
The interviews, which included assessments of cognitive and physical performance, were completed by trained survey research staff in the homes of study participants living in the community or in residential care facilities, such as retirement or assisted-living communities. "Pain is common in older adults and one of the major reasons why we start slowing down as we age," says lead investigator Kushang V. Patel, PhD, MPH, of the Center for Pain Research on Impact, Measurement, and Effectiveness in the Department of Anesthesiology and Pain Medicine at the University of Washington.
The researchers gained several insights from the new study:
- Bothersome pain afflicts half of community-dwelling older adults in the United States.
- The majority of older adults with pain reported having pain in multiple locations, such as in the back, hips, and knees.
- The percentage of people with pain did not differ by age, even when researchers accounted for dementia and cognitive performance.
- Pain was strongly associated with decreased physical capacity. Older adults with pain, particularly those with pain in multiple locations, had weaker muscle strength, slower walking speed, and poorer overall function than those without pain.
The researchers analyzed data from the National Health and Aging Trends Study (NHATS), which was designed to investigate multiple aspects of functioning in later life and is funded by the U.S. National Institute on Aging, part of the National Institutes of Health. Investigators conducted in-person interviews with 7,601 adults ages 65 years and older who were enrolled in the NHATS in 2011. All were Medicare beneficiaries.
The overall prevalence of bothersome pain in the last month in the study group was 52.9%. Pain did not vary across age groups, and this pattern remained unchanged when accounting for cognitive performance, dementia, proxy responses, and residential-care living status. Pain prevalence was higher in women and in older adults with obesity, musculoskeletal conditions, and depressive symptoms. The majority (74.9%) of older adults with pain reported multiple sites of pain.
Several measures of physical capacity, including muscle strength and lower-extremity physical performance, were associated with pain and multisite pain. For example, self-reported inability to walk three blocks was 72% higher in participants with pain than without pain. Participants with one, two, three, and four or more sites were 41%, 57%, 81%, and 105% more likely to report inability to walk three blocks, respectively, than older adults without pain.
"Considering that pain is often poorly managed in the geriatric population, our findings underscore the need for public health action, including additional epidemiologic research and the development and translation of interventions aimed at improving pain and function in older adults," Patel concludes.
Population aging is occurring in nearly every country of the world. Not only are the number and proportion of older adults increasing globally, but the older adult population itself is getting older as well. Gains in life expectancy at older ages have fueled the rapid growth of the oldest-old segment of the population, although it is unclear whether improvements in functional status of older adults have kept pace. Since disability in late life is a major predictor of medical and social service needs, investigating risk factors for functional decline is a major public health priority. Today's published study in PAIN® by Patel and colleagues clearly identifies the high burden of pain in the older adult population.
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NOTES FOR EDITORS
"Prevalence and impact of pain among older adults in the United States: Findings from the 2011 National Health and Aging Trends Study," by Kushang V. Patel, PhD, MPH; Jack M. Guralnik, MD, PhD, MPH; Elizabeth J. Dansie, PhD; Dennis C. Turk, PhD (DOI: http://dx.doi.org/10.1016/j.pain.2013.07.029). It appears in PAIN®, Volume 154, Issue 12 (December 2013) published by Elsevier.
Full text of the article is available to credentialed journalists upon request. Contact Terry Materese at 215-239-3196 or email@example.com for copies. Journalists wishing to interview Dr. Kushang V. Patel may contact him at 409-939-7234 or firstname.lastname@example.org.
PAIN®, the official journal of the International Association for the Study of Pain® (IASP®), publishes 12 issues per year of original research on the nature, mechanisms, and treatment of pain. This peer-reviewed journal provides a forum for the dissemination of research in the basic and clinical sciences of multidisciplinary interest and is cited in Current Contents and MEDLINE. It continues to be ranked No.1 out of the 29 journals in the Anesthesiology category, according to the2012 Journal Citation Reports, published by Thomson Reuters. www.painjournalonline.com
ABOUT THE INTERNATIONAL ASSOCIATION FOR THE STUDY OF PAIN® (IASP®)
IASP® is the world's largest multidisciplinary organization focused specifically on pain research and treatment. It is the leading professional forum for science, practice, and education in the field of pain, bringing together scientists, clinicians, health-care providers, and policymakers to stimulate and support the study of pain and to translate that knowledge into improved pain relief worldwide. Founded in 1973, IASP has nearly 8,000 members from 133 countries and in 90 chapters. www.iasp-pain.org
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