A U.S. study shows that from 1999 to 2011, hospitalization rates for hypoglycemia were higher than those for hyperglycemia among older adults in the U.S. The study was published online May 17 in the Journal of the American Medical Association (JAMA Internal Medicine). The paper was published online May 17 in JAMA Internal Medicine. The prospective observational study used data from 33,952,331 Medicare beneficiaries aged ≥65 years from 1999 to 2011. The results were that hospitalizations for hyperglycemia decreased by 38.6% (from 114 to 70 per 100,000 person-years) and hospitalizations for hypoglycemia increased by 11.7% (from 94 to 105 per 100,000 person-years) from 1999 to 2011. In an analysis of changes in the prevalence of diabetes, hospitalizations for hyperglycemia and hypoglycemia decreased by 55.2% and 9.5%, respectively. In addition, hospitalization for hypoglycemia was 2 times higher in patients ≥75 years of age than in patients 65-74 years of age. The 30-day and 1-year mortality rates and 30-day rehospitalization rates for hyperglycemia or hypoglycemia decreased, and all 3 indicators were similar after the first hospitalization for hyperglycemia or hypoglycemia (e.g., in 2010, the 3 indicators were 5.4%, 17.1%, and 15.3%, respectively, after hospitalization for hyperglycemia and 4.4%, 19.9%, and 16.3%, respectively, after hospitalization for hypoglycemia).