In the largest experiment of its kind to date, 1162 patients aged 18 to 86 years (mean ± SD age, 50 ± 15 years) with a history of chronic low back pain for a mean of 8 years were randomly assigned to receive acupuncture, sham acupuncture, or conventional therapy (a combination of drugs, physical therapy, and exercise) for their chronic back pain. Patients underwent ten 30-minute sessions, generally 2 sessions per week.
After six months, patients answered questions from the Von Korff Chronic Pain Grade Scale questionnaire and the back-specific portions of the Hanover Functional Ability Questionnaire to determine their chronic level of pain after treatment.
In the real acupuncture group, 47 percent of patients improved (defined as 33% improvement or better on the Von Korff Scale or 12% better on the Hanover Questionnaire). In the sham acupuncture group, 44 percent improved. In the conventional care group, 27 percent got relief.
Study Conclusion: Low back pain improved after acupuncture treatment for at least 6 months. Effectiveness of acupuncture, either real or sham, was almost twice that of conventional therapy.
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