Fig 3 Odds ratio for hospital admission or emergency department visit for hypoglycemia associated with concurrent use of warfarin and glipizide/glimepiride, sensitivity analysis. Alternative risk adjustment uses hierarchical condition categories (HCC), as described in methods section. Adjusting for use of other diabetes drugs includes concurrent fills in analysis. Ever used warfarin analysis compares person quarters with concurrent warfarin/sulfonylurea use with person quarters without concurrent use within subsample of patients who ever used warfarin. Fixed effects analysis compares hypoglycemia rates during periods of concurrent warfarin/sulfonylurea use and non-use within same beneficiary over time. Statin analysis compares hypoglycemia rates according to concurrent sulfonylurea/statin use based on conditional fixed effects logistic specification