https://www.nccih.nih.gov/research/research-results/us-national-survey-identifies-associations-between-chronic-severe-back-pain-and-disability
U.S. National Survey Identifies Associations Between Chronic Severe Back Pain and Disability | NCCIH
Three-quarters of Americans with chronic severe back pain have difficulties with mobility, work, social activities, or self-care, national survey data show
back pain and disability