Patients with chronic low-back pain treated by chiropractors showed greater improvement and satisfaction after one month of care than patients treated by family physicians. Satisfaction scores were higher for chiropractic patients. A higher proportion of chiropractic patients (56% vs. 13%) reported that their low-back pain was better or much better, whereas nearly one-third of medical patients reported their low-back pain was worse or much worse.
Journal of Manipulative and Physiological Therapeutics, 2000