Sleep Disorders Predict Increased Healthcare Visits and Costs for Low Back Pain


Newswise — July 9, 2019Many patients with low back pain also have sleep disorders, which are linked to increased healthcare visits and higher costs for back pain treatment, reports a study in the journal Spine. The journal is published in the Lippincott portfolio by Wolters Kluwer.

The presence of a sleep disorder has a "significant and unique effect" on back pain-related healthcare use – beyond the impact of pain intensity, disability, and other factors, according to the new research by Daniel Rhon, DSc, of Brooke Army Medical Center, San Antonio, Texas, and colleagues. They believe that assessing sleep disorders in patients with back pain "could provide an important indication of risk for high pain-related healthcare use."

Higher Use and Costs of Back Pain Treatment in Patients with Sleep Disorders

The study included 757 patients with low back pain attending self-management classes at a US military hospital. More than two-thirds of patients were men; over 80 percent were military service members.

The researchers assessed standard scores for pain intensity and disability, along with the presence of diagnosed sleep disorders and daytime sleepiness. These factors were evaluated for association with the amount of healthcare for low back pain (total number of medical visits and costs of related care) in the year after the self-management classes.

As a group, the patients had relatively mild back pain: the average pain score was 2.4 out of 5 and average disability score 18.7 out of 100. However, 26 percent had a diagnosed sleep disorder – most commonly insomnia.

"The number of visits for low back pain was significantly associated with pain intensity, disability, and history of sleep disorder," Dr. Rhon and colleagues write. Pain, disability, and diagnosed sleep disorders were also linked to increased costs for treating back pain. Daytime sleepiness, although a key symptom of sleep disorders, was unrelated to healthcare visits or costs.

Sleep disorders were associated with higher low back pain-related healthcare visits and costs at all levels of pain and disability. For example, at a disability score of 20, the average number of low back pain-related healthcare visits was 5.4 for patients with sleep disorders versus 3.5 for those without sleep disorders. At the same disability score, average healthcare costs were about $1,254 for patients with sleep disorders versus $766 for those without.

The impact of sleep disorders was even greater at higher levels of pain and disability. However, the study found no "moderating effect" – sleep disorders did not explain the increases in healthcare visits or costs for patients with higher pain or disability scores.

Low back pain is a very common condition and a major contributor to high levels of healthcare use and increased costs. Previous studies have suggested that sleep quality may contribute to outcomes for patients with musculoskeletal pain conditions, including back pain.

The new findings show that patients with diagnosed sleep disorders have higher healthcare use and costs for low back pain, independent of the effects of pain intensity and disability scores. Dr. Rhon and coauthors write, "The presence of sleep disorders is not often evaluated during the clinical management of low back pain, but could provide an important indication of risk for high pain-related healthcare use." That may be especially important with new healthcare reimbursement models emphasizing higher-quality, lower-cost care.

Dr. Rhon and colleagues call for further research to clarify how sleep disorders affect the outcomes of low back pain – including studies of patients with higher pain intensity and disability scores. They also discuss possible treatment implications, such as appropriate screening for disordered sleep earlier in the care management pathway. This also includes the need for clinical decision aids that improve management of disordered sleep for patients with back pain, as well as thresholds for referral to a sleep specialist.

Click here to read "Does Disordered Sleep Moderate the Relationship Between Pain, Disability and Downstream Healthcare Utilization in Patients with Low Back Pain? A Longitudinal Cohort from the US Military Health System"

DOI: 10.1097/BRS.0000000000003114

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About Spine

Recognized internationally as the leading journal in its field, Spine (www.spinejournal.com) is an international, peer-reviewed, bi-weekly periodical that considers for publication original articles in the field of spine. It is the leading subspecialty journal for the treatment of spinal disorders. Only original papers are considered for publication with the understanding that they are contributed solely to Spine. According to the latest ISI Science Citation Impact Factor, Spine is the most frequently cited spinal deformity journal among general orthopaedic journals and subspecialty titles.

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About Wolters Kluwer

Wolters Kluwer (WKL) is a global leader in professional information, software solutions, and services for the clinicians, nurses, accountants, lawyers, and tax, finance, audit, risk, compliance, and regulatory sectors. We help our customers make critical decisions every day by providing expert solutions that combine deep domain knowledge with advanced technology and services.

Wolters Kluwer reported 2018 annual revenues of €4.3 billion. The group serves customers in over 180 countries, maintains operations in over 40 countries, and employs approximately 18,600 people worldwide. The company is headquartered in Alphen aan den Rijn, the Netherlands.

Wolters Kluwer provides trusted clinical technology and evidence-based solutions that engage clinicians, patients, researchers and students with advanced clinical decision support, learning and research and clinical intelligence. For more information about our solutions, visit http://healthclarity.wolterskluwer.com and follow us on LinkedIn and Twitter @WKHealth.

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