Background: Inpatient hypoglycemia (HG) is common and often avoidable, associated with poor outcomes and high costs, and its prevention reflects hospital performance. We investigated its risk factors and impact on mortality, hospital length of stay (LOS), charges, and readmissions. We defined HG as glucose ≤40 mg/dl (severe), >40 – ≤70 mg/dl (moderate), or euglycemia >70 [...]