The prevalence of arthritis tended to be higher in eastern U.S. states than in western states in 2011, according to a report from the Centers for Disease Control and Prevention. All seven states with an arthritis rate below 22% were located west of the Mississippi River, with Hawaii having the lowest rate at 18.2%, followed by Utah (19.8%) and Texas (20.2%). The District of Columbia, which is in the East, had an arthritis rate of 20.9%.

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