Tuyển tập các báo cáo nghiên cứu về y học được đăng trên tạp chí y học Critical Care giúp cho các bạn có thêm kiến thức về ngành y học đề tài: A longitudinal study of chiropractic use among older adults in the United States. | Weigel et al. Chiropractic Osteopathy 2010 18 34 http content 18 1 34 CHIROPRACTIC OSTEOPATHY RESEARCH Open Access A longitudinal study of chiropractic use among older adults in the United States 1 13 1 5 1 34 Paula Weigel Jason M Hockenberry Suzanne E Bentler Maksym Obrizan Brian Kaskie Michael P Jones Robert L Ohsfeldt6 Gary E Rosenthal1 2 3 Robert B Wallace2 7 Fredric D Wolinsky1 2 Abstract Background Longitudinal patterns of chiropractic use in the United States particularly among Medicare beneficiaries are not well documented. Using a nationally representative sample of older Medicare beneficiaries we describe the use of chiropractic over fifteen years and classify chiropractic users by annual visit volume. We assess the characteristics that are associated with chiropractic use versus nonuse as well as between different levels of use. Methods We analyzed data from two linked sources the baseline 1993-1994 interview responses of 5 510 selfrespondents in the Survey on Assets and Health Dynamics Among the Oldest Old AHEAD and their Medicare claims from 1993 to 2007. Binomial logistic regression was used to identify factors associated with chiropractic use versus nonuse and conditional upon use to identify factors associated with high volume relative to lower volume use. Results There were 806 users of chiropractic in the AHEAD sample yielding a full period prevalence for 1993-2007 of . Average annual prevalence between 1993 and 2007 was with a range from to . Approximately 42 of the users consumed chiropractic services only in a single calendar year while 38 used chiropractic in three or more calendar years. Chiropractic users were more likely to be women white overweight have pain have multiple comorbid conditions better self-rated health access to transportation higher physician utilization levels live in the Midwest and live in an area with fewer physicians per capita. Among chiropractic users 16 had at least one year in
