Living in a disadvantaged neighborhood worsens musculoskeletal pain outcomes after trauma

Individuals living in disadvantaged neighborhoods have worse musculoskeletal pain outcomes over time after stressful events such as motor vehicle collision than individuals from higher socioeconomic status neighborhoods, even after accounting for individual characteristics such as age, sex, income, education, and employment status.

These were the findings of a multi-site research study led by Samuel McLean, MD, MPH, associate professor of anesthesiology and emergency medicine at the University of North Carolina School of Medicine. The results of the study were published online by the journal Pain.

"We all like to believe that we are immune to the circumstances of our environment," said Dr. McLean. "These results suggest that when it comes to chronic musculoskeletal pain development after traumatic/stressful events, the poet John Donne was right – 'No man is an island.' "

The investigators enrolled 948 European-American individuals who presented to emergency care centers in four U.S. states for evaluation after car accidents. Patients were enrolled at the time of their presentation for emergency care, and then received follow-up evaluation at 6 weeks, 6 months, and 12 months. Approximately 90 percent of participants completed follow up at each time point.

Information regarding each study participant's neighborhood environment was determined by geocoding their home address to a "census tract." A census tract is the smallest territorial unit for which population data are available in the U.S. Census tract data was then used to determine neighborhood socioeconomic status using the Socioeconomic Position Index. This index generates a total score by averaging scores of the following measures: percent unemployed, percent below the U.S. poverty line, percent with high school education or less, percent of expensive homes (owner-occupied homes worth $300,000 or more) in the neighborhood, and median household income.

After adjusting for individual-level factors including participant sex, age, highest level of educational attainment, family income, and employment status, living in a more disadvantaged area was found to increase pain burden in the months after the car accident. Results remained significant after adjustment for receiving opioids at the time of emergency care, litigation status, obesity (body mass index), at-risk drinking habits prior to the accident, and mental health status prior to the accident.

Muscle pain and related aches can happen to anyone. They usually affect the support structures that allow you to move about in daily life: bones, muscles, ligaments, and tendons. Musculoskeletal pain can be caused by injury, poor posture, repetitive motions, overuse, and just plain old wear and tear. Your entire body might ache, or you might have pain in a specific spot from, for example, a pulled muscle or twisted ankle. If the pain is strong, it may even keep you from sleeping and leave you fatigued, too. Fortunately there are many ways to treat musculoskeletal pain.