Risk of traumatic injury associated with chiropractic spinal manipulation in Medicare Part B beneficiaries aged 66 to 99 years
Review
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Structural and chiropractic
Spine (Phila Pa 1976).2015 Feb 15;40(4):264-70.
Authors:
J M Whedon, T A Mackenzie, R B Phillips, J D Lurie
Abstract.
Study design: Retrospective cohort study. Objective: In older adults with a neuromusculoskeletal complaint, to evaluate risk of injury to the head, neck, or trunk after an office visit for chiropractic spinal manipulation compared with office visit for evaluation by primary care physician. Summary of background data: The risk of physical injury due to spinal manipulation has not been rigorously evaluated for older adults, a population particularly vulnerable to traumatic injury in general. Methods: We analyzed Medicare administrative data on Medicare B beneficiaries aged 66 to 99 years with an office visit in 2007 for a neuromusculoskeletal complaint. Using a Cox proportional hazards model, we evaluated for adjusted risk of injury within 7 days, comparing 2 cohorts: those treated by chiropractic spinal manipulation versus those evaluated by a primary care physician. We used direct adjusted survival curves to estimate the cumulative probability of injury. In the chiropractic cohort only, we used logistic regression to evaluate the effect of specific chronic conditions on likelihood of injury. Results: The adjusted risk of injury in the chiropractic cohort was lower than that of the primary care cohort (hazard ratio, 0.24; 95% confidence interval, 0.23-0.25). The cumulative probability of injury in the chiropractic cohort was 40 injury incidents per 100,000 subjects compared with 153 incidents per 100,000 subjects in the primary care cohort. Among subjects who saw a chiropractic physician, the likelihood of injury was increased in those with a chronic coagulation defect, inflammatory spondylopathy, osteoporosis, aortic aneurysm and dissection, or long-term use of anticoagulant therapy. Conclusion: Among Medicare beneficiaries aged 66 to 99 years with an office visit risk for a neuromusculoskeletal problem, risk of injury to the head, neck, or trunk within 7 days was 76% lower among subjects with a chiropractic office visit than among those who saw a primary care physician.
Publication Date:
2015 Feb
OEID:
5553
Whedon, MJ., Mackenzie, AT., Phillips, BR., Lurie, DJ. (2015) 'Risk of traumatic injury associated with chiropractic spinal manipulation in Medicare Part B beneficiaries aged 66 to 99 years', Spine (Phila Pa 1976).2015 Feb 15;40(4):264-70.
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